My 750HP BMW 135i is BROKEN (NOT GOOD!) 😰

I've got some bad news... this is why you haven't seen this car on the channel lately. Comment your thoughts below.
📷 Instagram: / jakespence
🏁 My BMW merchandise: bimmerstreet.com
🌟 Become a Patron: / jake_spence
💰 Donate to the channel: bit.ly/2HhSDAZ
-------
🚀 2008 BMW 135i (752whp/691wtq) 🚀
Complete Build Log: my1series.com
PERFORMANCE
Doc Race 6266 Single Turbo Kit: bit.ly/302yZjz
Doc Race Intake Manifold & PI Kit: bit.ly/2PO3CEI
Doc Race 3" Charge Pipe: bit.ly/2VjciZQ
TiAL Q Blow Off Valve: amzn.to/2HdILpt
VRSF 7.5" Race Intercooler: bit.ly/2vLjvm8
PR Ignition Kit: bit.ly/2VUn1cy
PR Stage 3+ Fuel Pumps: bit.ly/2H6m3k7
BMP Port Injection Kit (for OEM intake): bit.ly/2MQJDUs
Charge Pipe & BOV (for OEM intake): bit.ly/2DVzrHo
BMS PCV: amzn.to/2H4moF8
NGK 97506 Spark Plugs @ 0.022": bit.ly/2TvoDVQ
ACCESSORIES
BMS Cowl Filters: bit.ly/2l4082g
BMS Oil Catch Can: bit.ly/2HTxsaJ
Billet Oil Filter Cap: bit.ly/2nDj1KW
3.5 Bar TMAP Sensor Kit: bit.ly/2ZZIrVb
TUNING
JB4 Tuner: bit.ly/2t8Hevi
JB4 Bluetooth Connect Kit: bit.ly/2DXGOOH
JB4 Port Injection Control Module: bit.ly/2XGIaFh
JB4 NLS/2-Step Relay: bit.ly/2ZZIrVb
Free JB4+MHD Flashes: bit.ly/2V79udi
MHD Flashing Cable: amzn.to/2qGKbl2
OTG USB Adapter: amzn.to/2qKvc9R
TRANSMISSION (MANUAL)
SPEC Stage 3+ Clutch: bit.ly/2JsSehU
Single Mass Flywheel: bit.ly/2JtLtfN
Race Transmission Mounts: bit.ly/2sOXEJH
RTD Short Shifter: bit.ly/2vIKzm3
Teflon Shifter Bushings (OEM Shifter): bit.ly/2V99OZc
Upgraded Clutch Delay Valve: bit.ly/2LudXYd
Clutch Pedal Stop: bit.ly/2Vcjkec
Royal Purple Trans Fluid (2 qts): amzn.to/2VqSLqF
Redline 75W90 Diff Fluid (2 qts): amzn.to/2J6pPt7
WHEELS/SUSPENSION/BRAKES
Eibach Pro-Kit Lowering Springs: bit.ly/2HFyfqm
APEX ARC-8 18" Wheels (Anthracite): bit.ly/2LJxkrx
Front Tires (235/40/18): amzn.to/2tcOMNv
Rear Tires: (265/35/18): amzn.to/2DoIfEv
10mm Spacers (Rear): bit.ly/2LGPaLC
Wheel Stud Conversion Kit: bit.ly/2zPJ7mW
StopTech Brake Kit: amzn.to/2qKFWVA
⛽ BMW OIL CHANGES I SWEAR BY
Motul X-cess 5W-40 Oil (5L): amzn.to/2HKTbOv
Motul X-cess 5W-40 Oil (1L) x2: amzn.to/2HbGpqZ
Mann Oil Filter: amzn.to/2HLiPT5
Magnetic Drain Plug: amzn.to/2EYwYsV
🔧 TOOLS I LOVE
Dragy GPS Track Timer: amzn.to/2J4DILx
BMW Wheel-Saver Socket: amzn.to/2JmOAVq
BMW Jack Pad Adapter: bit.ly/2V7F7mX
BMW Magnetic Spark Plug Socket: amzn.to/2VQGaw6
Spark Plug Feeler Gauge: amzn.to/2HJoLfn
200-Piece Tool Kit: amzn.to/2zZlsRd
Low-Pro Jack: amzn.to/2vq1g8F
🛒 2009 BMW 335i (Mostly Stock) 🛒
Complete Build Log: bmw335i.com
DINAN Carbon Fiber Cold Air Intake: bit.ly/2Vlycfc
BMS Oil Catch Can: bit.ly/2HTxsaJ
NGK Spark Plugs @ 0.020": bit.ly/2TvoDVQ
High-Performance Ignition Coils: bit.ly/2HNI3kf
📸 MY EQUIPMENT
Vlogging Camera: amzn.to/2H7Ggax
Wide Angle Lens: amzn.to/2Uo7pyn
Canon 50mm Lens: amzn.to/2YVFdkS
RODE Microphone: amzn.to/2ViStSq
Camera Stabilizer: amzn.to/2D5N5Hg
LED Camera Light: amzn.to/2H6SgJp
DSLR Suction Mount: amzn.to/2Kkwrd3
GoPro HERO7 BLACK: amzn.to/2Job7RE
GoPro Suction Mount: amzn.to/2vLdq9m
DJI Mavic Pro Drone: amzn.to/2H76iur
Editing PC (it's a POWERHOUSE!): amzn.to/2V29ds8
This description contains affiliate links. If you purchase anything using the product links above, I will earn a small commission at no extra cost to you. Win-win!
"Remember"
Instrumental by Homage
• [FREE] Chill Storytell...

[@jake_spence]

*FYI* - Since editing/uploading this video, I have a good idea what the problem could be. I'm going to try it and share an update in the next video!

[@AsmirSut]

Are you really gonna do this to us? C'mon tell us what your suspect is. =)

[@4x4runr]

Next video in 30 mins? Lol

[@jake_spence]

I have a sneaky suspicion that the connection on my JB4 gray sub-connector isn't perfect. Going to try unplugging, cleaning the connections, and re-plugging it in.

[@eturnulrs704]

@@jake_spence also check seal on BOV

[@bambino100100]

I have the same problem in my 135i 2008, if You find out how to Fix it, please let me know, I haven' t time to takes to the mecanic.

[@BudgetBimmers]

Try doing the gas pedal throttle reset, this is the procedure: 1. Never touch the break pedal & key remains inserted the entire time 2. Insert key and push START Button 3. Press and HOLD accelerator pedal for 30 seconds (some say 5, some say 25 seconds - I did 30 to be sure). 4. WITHOUT RELEASING THE ACCELERATOR PEDAL, push the START Button 5. Release accelerator pedal 6. Wait full 2 minutes 7. Start car normally This helped me when i had throttle oscillation probz

[@emcovlogs_136]

xo

[@jake_spence]

I tried this already, off camera, and it didn't help ☹ BUT I just checked my JB4 harness and think I found the issue!

[@smear7331]

instructions not clear, blew motor

[@MrNicoe36cabrio]

@@jake_spence So it seems I was right Jake. The Dutch Guy.

[@yoshi1u2]

Bmw is giving u a check engine light for a reason no reseting adaptations ect ect is going to fix a faulty component. Since its for throttle position it could be your accelerator Pedal as well as throttle body. Even more vague it could be ur map sensor throttle body or ur wires could have a short or can be touching. Ur ecu automatically checks all your monitored components all the time and if its not reading the right voltage or rpm it will throw a fault.

[@simeonstaykov9836]

We haded this problem one car here in bulgaria we tried almost everything we changed the throttlebody we changed the gas pedal and other stuff. Finally everything is fixed after changing the cable installation. Now is fine no limp mode ;)

[@jake_spence]

Glad you were able to figure it out!

[@dylans4562]

Good old n54, I'm dealing with limp mode myself. Great cars when they run. The worst when they dont😕

[@jake_spence]

Right! I'm sure I'll figure it out, but wanted to show that everything isn't always perfect on my channel.

[@dylans4562]

@@jake_spence I'm going into limp mode when I'm harder into the throttle , going about 100 or so. No reduced power or throttle response and the reduced engine malfunction goes away after ignition reset. Results of fbo , fmic, and jb4. Smoke tested so there aren't any boosts leaks.

[@jake_spence]

Could just be that the turbos are getting old and tired. I dealt with the same thing when I maxed out my stock turbos.

[@dylans4562]

@@jake_spence I'm at 96k, so that's what I'm hoping it is 😊 looking to go single or upgraded twins very soon. It could also be fuel related. I have to do some logs to see how the fuel trims

[@jake_spence]

Yeah, that's true. Good idea to take a look at all your fuel pressures and trims.

[@sammyjames1929]

Ive found that twice on two different cars once it was a vaccum leak at the fmic dropped it put new seals it fixed. The other we pulled the JB4 no more problem the owner was following up with bms but haven't seen him since. I get in touch with bms and check all vaccum lines might be some leaky ones easy fix hopefully hang in there i know how fustrating this gets..

[@jake_spence]

I checked for boost and vacuum leaks, didn't find any. BUT I think I found a bad connection in the JB4 harness (my own fault), I fixed it and the car seems to be better now!

[@lukeh7854]

Have you tried replacing the MAF sensor? Could be airflow issues making the TPS go mental.

[@arnobruynen6073]

He's running a huge single turbo and if you look closely at that pod air filter it has no MAF in between the filter and the turbo...

[@jake_spence]

I replaced one MAP sensor (manifold), but not the one on the charge pipe.

[@nathanielquick4259]

Sry to hear man. Just went through the maintenance steps after my serpentine belt shredded and have had it back for a week and now I have a super knock.

[@jake_spence]

Oh no ☹ that sucks. Gotta love N54 problems!

[@champ000888]

reset throttle Simple method step by step 1. Engine off remove the key 2. Unplug throttle body 3. Back in to the car 4. Start engine 5. To have the engine light up 6. Turn off the engine 7. Plug in throttle body 8. Twist the key on (don’t start engine ) 9. Plug in ODB2 10. Connect you mobile phone Obd2 11. reset the Fault code on mobile phone 12. Start engine finish NO engine light on Should be done every time after washing the throttle body

[@jake_spence]

Thanks for the step-by-step guide!

[@pullenjo]

Stick the stock one on there. If that fixes it take the aftermarket one to a shop and get them to run tests and have a look at it

[@jake_spence]

I have since fixed the issue, see one of my latest videos!

[@KiesMotorsports]

Lol love the manifold collection. I have a chargepipe collection ha

[@jake_spence]

Haha I bet your pile of spare parts is bigger than mine!

[@KiesMotorsports]

@@jake_spence Ha, I think I'm up to 15 or 16 F30/F32 bumpers, I probably have at least 10 oem F30 intercoolers, probably 20 chargepipes, tail lights, turbos... My next video, "We built a car from spare parts!" ha

[@abdelhameedalotaibi3657]

Wow and i thought the check engine light that came up in my CLS55 was a nightmare.. it turned out to be an exhaust sensor .. but these BMWs man .. hope u figure it out and get it back in shape ..

[@jake_spence]

Gotta love having car problems... but I think I figured it out! I won't let it beat me lol.

[@abdelhameedalotaibi3657]

Jake Spence good job bro hope it runs fine without any issues .

[@easyx9mm]

Throttle body faults are very accurate faults to that specific system. It’s a safety issue. If you do have knowing good TB, most likely you have a harness problem or ECM. Remember TB has two potentiometers that move in opposition direction on a scale. High resistance in harness can cause incorrect reading at the ECM.

[@jake_spence]

Thanks for the info. I just traced the issue down to a bent pin in the JB4/ECU harness!

[@tomkaraitiana6136]

This thing is a beast, l own one off these myself, it's a convertable. I would love to feel that sort of power

[@jake_spence]

It's crazy! Once I got bit by the power bug, I couldn't stop modding it.

[@byteoncomputerservices8054]

It's coming up with a TPS fault code, so bring up the PID for both TP sensors and see what output you're getting when you depress the throttle. No output or only an output for one TPS means a wiring fault. If you extended the wiring, logic dictates that's where the fault is.

[@jake_spence]

Yeah, I think I need to comb thru that harness either way. But I just found the fault to be from a bent pin in the JB4/ECU harness!

[@speedtheoryperformance4638]

Hello Jake, unfortunately the JB4 codes or MHD codes are fully accurate. Code 2CF7is throttle position/PEDAL poisiton sensor/switch 'B' (normally echaust bank side) circuit Range/performance is voltage high or low. I had to diagnosis a car with a code from JB4 and it wasn't accurate at all and it was going into limp mode. Probably a voltage issue. IE a tuning issue as well. Under load something is tripped so check electrical system.

[@speedtheoryperformance4638]

Also, 2CF6 is position 'A' …. high low. voltage could be or a fuse. Do not over look the pedal assembly

[@speedtheoryperformance4638]

Possible causes Faulty throttle position sensor Throttle position sensor harness is open or shorted Throttle position sensor circuit poor electrical connection Faulty Engine Control Module (ECM)

[@jake_spence]

Great info here. I will take a look at all of this after I verify the JB4 connection and harnesses are good. Thanks!

[@TurboBMRProjectLove]

FYI - If you want to check the manifold pressure sensor and charge air pressure sensor (very rare that they go bad), you leave the ignition on engine off and check the pressure reading on both sensors. They should read VERY close to each other since its atmospheric pressure at that point. - BMW Master Technician

[@jake_spence]

Good to know, thanks!

[@AsmirSut]

I would begin with checking all the sensors front to back, then check the wiring to everything related. Sometimes it can be as simple as a ground wire getting loose somewhere. Good luck with this, looking forward to see how you fix it.

[@jake_spence]

Yup, I think it's wiring or a bad sensor somewhere. I'll get to the bottom of it!

[@Pppppppppppppppppppppppppppp66]

@@jake_spence just saing that a bad connector or wiring doesnt make a failure that gets bigger over time

[@vladimirzubrilov8885]

Shit man good luck fixing it, hope you'll figure it out, I'm almost ready to trigger and order single turbo for my 335i. You really convinced me on it from your first video.

[@jake_spence]

I'm sure I will. And nice! If you order it from the links in my description or website, I'd appreciate that. I get a small commission for parts bought on ECSTuning. You'll love the single turbo life.

[@vladimirzubrilov8885]

You got it

[@ThePandasian34]

Might be loose connections to the throttle body extension or a bad connection to the throttle body to the DME/JB4. Also in some experience it could be your throttle pedal, i know this could be a problem on some mercedes AMG and some Nissan products and set a code similar to what you’re getting. Reason being is that the APP sensor(gas pedal) has two signal circuits for redundancy and when one of the circuits go bad the computer still has a reference signal for throttle position to allow the vehicle to still be driven the nearest service center

[@jake_spence]

I just checked the harnesses for the JB4 to the ECU and found a bent pin which seems to be the problem. I must've bent a pin when I installed it! Straightened it out, cleaned up the connections and all seems better.

[@ThePandasian34]

Jake Spence thats awesome that everything is okay with your 135i now, fingers crossed that limp mode doesn’t come on. Love your videos and it help me out motivating me with my 535i build.

[@jmccarsnmore1025]

Troubleshooting 101 right there!! Check the cable extension to the throttle body. It might came out of place when working on the clutch.

[@jake_spence]

I'm trying!

[@jmccarsnmore1025]

Jake Spence I just edited!! LOL Like I said, check that wire extension to the throttle body. Not at the TB itself, but at the extension.

[@jake_spence]

Good idea!

[@jmccarsnmore1025]

Jake Spence NP, thanks!! Hope you find this issue.

[@4x4runr]

The throttle body extension: did you just crimp or solder? When doing Electical like that I like to solder. When doing stuff like speakers I’ll just crimp double check your connections

[@jake_spence]

I did not solder. I used weather-proof crimp connectors. I might re-do it with solder/crimp connectors. Good tip!

[@aaronpederson7910]

Whenever I go into limp mode it's because I need a better fuel pump (I get a little greedy with the E85) But it's all good I just restart the car. I cant imagine starting the car IN LIMP MODE that's the stuff of nightmares.

[@jake_spence]

Yeah, seeing limp mode pop up right away is pretty scary lol.

[@thedriveinopera8889]

Will the n54 go into limp mode before knocking

[@DSWGamingMCSG]

That’s crazy cuz I had a similar issue on my n54 where I was getting an idle like that but I had no codes and clearing the adaptations worked for me. I have a feeling it’s one of the air sensors.

[@jake_spence]

Good to know, I'm thinking it's electrical.

[@kenrossaukrsa]

That code comes up on many cars when one sticks a phone / camera charger in the cigarette lighter port or any other power port , maybe you t lined a positive with a foreign device ? Now it’s reading diffrent voltages Amps and ohms, even a faulty battery can cause that code to come up, you are not supposed to clear the code with the engine running, will damage the Ecu !!!

[@jake_spence]

I don't think that's the problem, but I know the electrical system in these cars can be very touchy!

[@kenrossaukrsa]

Jake Spence and the vanos adaptations maybe ?

[@nicholasb0201]

I had the same codes.... it went way when i replaced the throttle body... Get one on FCP euro and its a Lifetime warranty

[@jake_spence]

Glad you were able to fix your issue. FCP Euro is the way to go for lifetime warranty parts.

[@fk-photography1451]

Had the same problem. Mass airflow sensor :) replaced it and poof the problem was gone

[@jake_spence]

Glad that fixed your problem! Didn't work for me though 😕

[@fk-photography1451]

Saw you changed the small one on the intake manifold. Replace the other one that by the air filter. I have got the n55 btw. Maybe its a little bit different.

[@coolstory92]

That’s how you know your a real N54 owner. Simple fix and you question yourself like.... I don’t know that was too easy

[@jake_spence]

Lol so true.

[@Nico_335i_DCT]

Hi Jake. I think you should check all the connectors of the JB4. Check also if there's any moist in the ECU. This can throw strange codes that make no sence. Good luck!

[@jake_spence]

Hi Nico, I think you're on to something here! That's the first thing I am going to try, checking the connection of the JB4. Will give an update in the next video.

[@Stevendivittis]

@@jake_spence I have a single turbo N54 as well and I had nothing but troubles with JB4 man...I ended up switching to an electronic boost controller (GFB G Force 3). I'd disconnect the JB4 all together and see what happens.

[@jReNeo]

I am having the exact same problem. 2CF7 Throttle valve potentiometer 2, plausibility with regard to air mass 2CF7 Throttle valve potentiometer 2, plausibility with regard to air mass May order a new TB just to “try”.

[@jake_spence]

I'd try resetting adaptations first. Do you have JB4?

[@jReNeo]

Oh I’ve reset via pedal and MHD many times. I tinkered with the JB4 connections, and it seems to be better. Though it did throw another 2CF7 right as I was pulling into the garage...

[@Gapdd]

Get Rheingold ISTA-D installed on a laptop will help you big time only thing it won’t be able to help you diagnose is aftermarket mods. Also ditch the jb4 if it’s the issue lol

[@jake_spence]

Yeah, I've been meaning to get set up with the proper programs on a laptop but still haven't gotten around to it...

[@Gapdd]

Jake Spence yeah man once you have the file on the computer it’s not bad at all just a few more other small changes need to be made in the settings and you should be good to go only real issue was selecting the proper comm port to use just follow the install instruction in the file which are super simple and you’ll be good. 👍

[@JUTACHINOBOT]

Check all the vac lines and the pins on jb4 connections.

[@jake_spence]

Checked the vacuum lines, they were fine. But I think the JB4 connection could be the culprit!

[@tuiwilson5486]

Flash back to stock do a full write reflash

[@jake_spence]

I'm going to try re-flashing my existing flash.

[@chrissierra3208]

Reset adaptations on throttle body. If the problem continues it is the throttle

[@jake_spence]

I did this already ☹ seems like a wiring issue.

[@andychara1631]

the wiring loom you extended, do a continuity test to make sure all strands off cable are in tact. solder them not crimp because you think they are connected tight, in fact you've probably caught one tiny strand of cable. it will show that its fine for the time being but in time it will come loose with engine vibration. or see if any of the cables are too close to the engine which could of burnt a cable. only talking from experience as a sparky with wires. lol. anyways good luck dude, hope you find the problem.

[@jake_spence]

This is on my list of things to do! Thanks for the tips.

[@twinscrolled]

This is why "diagnosis by parts replacement" is a bad idea. Also get a proper BMW scan tool, it will make your life a whole lot easier. Look forward to the fix.

[@jake_spence]

One day I'll get BMW software on my laptop. If the replacement of the throttle body took more than 10 minutes I wouldn't have done it, but I had a spare laying around to try. Didn't cost me a dime or more than a few minutes. Found the JB4 to ECU harness to be the culprit. Cleaned the connection and all is well again.

[@hendrixherrin4187]

You will figure it out ! What’s your opinion on the 335i rwd vs 335i x drive ? I’m very interested in buying one

[@jake_spence]

Thanks man! I prefer RWD all day, less drive train loss and easier to work on. But if you need XDrive for some reason, you can always get XDelete to turn the AWD off, making it RWD.

[@arisavvides1970]

You said it all started playing up after the clutch replacement, that tells me the probability is something was damaged or disturbed during that process. Go back to trace step by step the work you did by process of elimination. Are there any sensors on the crankcase to flywheel that could have been damaged? Any wiring harness connectors that may have been disturbed?

[@jake_spence]

I think it was just a coincidence, I traced the issue back to the JB4/ECU harness. There was a bent pin, so I straightened it out, cleaned it up and all is well again.

[@fouedbessadat3247]

I have the samp problem just mak a rest with mhd turno off the ignition and re make ignition and wait 1min

[@jake_spence]

Unfortunately, this did not help.

[@fouedbessadat3247]

@@jake_spence try to remove jb4 if the problem still chek the connection betwin dme thvalve sorry for my english

[@FilmsByZapata]

Never move the butterfly with your hand on modern cars even when you’re cleaning it, it’s going to mess up the position censor calibration (Subscribe to my channel for ZHP content!)

[@jake_spence]

Good point, but resetting the adaptations should re-calibrate it. I'll check out your channel.

[@e4t662]

Clean the MAF, replace spark plugs and ignition coils..

[@jake_spence]

Good ideas, either way.

[@MrJulio277]

this happend to me 3 months back changed the throttle body turned it on and the same thing kept popping up on my jb4 so i just cleared the codes and left the car running outside for like 20 min and came back out and it was gone and turned it off and turned it on and it never came back up

[@jake_spence]

Lol nice! I found it to be a bent pin in the JB4 harness...

[@EvenStevensss]

You said you had to extend your wiring! Check on that!

[@jake_spence]

Yup, this is going to be one of the first things I check!

[@TheV6corsa]

Check for boost leaks. Had this on an Audi S3 once, was hole in intercooler

[@jake_spence]

I checked for boost and vacuum leaks after this video, didn't find anything 😕

[@TheV6corsa]

Very Strange then. Hope you sort it. 👍🏻

[@bmwn5490]

It might be crank sensor same happen to my friend 335i

[@JoseGonzalez-zq7bn]

BMW/N54 that’s very possible

[@jake_spence]

Good idea, but I think I found the problem! I found a bad connection in the JB4 harness (my own fault), I fixed it and the car seems to be better now!

[@nicobuilt9631]

like mentioned check jb4 wires, had that same problem and it was a bent pin in the ecu compartment

[@jake_spence]

Just checked and guess what, found two bent pins on the gray JB4 sub-connector!

[@nicobuilt9631]

@@jake_spence yup :) same thing happend to me after installing jb4. i was bamboozled and never seen a code like that before. glad i was some help

[@orion1899]

Feel your pain, should have mine back soon though!

[@jake_spence]

Nice!

[@jamesluke7377]

BMW Doctor Dean on and/or Nathan's BMW Workshop. Both on KZbin. Both extremely knowledgeable. Dean even has the proper BMW DME update program and complete instructions to use it as well.

[@jake_spence]

Awesome, I will look them up!

[@jamesluke7377]

@@jake_spence they are more oem repairs, bur should be very helpful. Dean can seem a little "A" typical. Ignore that point as he does very much know what he's talking about.

[@gregbanasik]

You mentioned you are running a 3.5bar kit, but it looks like you swapped an original n54 TMAP sensor. Did you change the setting back on your jb4?

[@jake_spence]

The manifold sensor is OEM, the 3.5 bar sensor goes on the charge pipe.

[@gregbanasik]

Ah right just noticed, youre right thats manifold sensor

[@eduardoramos8894]

Try cleaning your TPS sensor

[@jake_spence]

Good idea!

[@roberto0612fcb]

at least you're knowledgeable to fix the problem bro

[@jake_spence]

Thanks man!

[@SirWideback]

Throttle bodies are so sensitive sometimes depending on the car

[@jake_spence]

Yeah, it really seems like it!

[@johncoldwell340]

Wiring to the throttle body maybe

[@jake_spence]

Yeah, I extended that harness so I'll probably re-do it at some point.

[@andreaceleste9291]

Thanks for the videos man . Am learning a lot . Am a BMW lover as well .

[@jake_spence]

Glad to help!

[@kieroncaprice1388]

The car idling like hat could be the coils or spark plugs

[@jake_spence]

I've verified the coils and plugs are good.

[@Russi4N]

Try to reset throttle adaptations

[@jake_spence]

I did this in the video.

[@dujon5481]

Feels like I’m in my own garage trying to figure out what’s going on with these codes great video. Did fixing the jb4 connections doing anything??

[@jake_spence]

Thanks man! Yes, the JB4 connection seemed to be the problem, we'll see if it comes back in the next couple days!

[@matty7x5]

@@jake_spence can we get some wot pulls of you testing the car out haven't seen it in action in a while

[@josevasconcelosligeiro9471]

P0221 2CF7 Throttle/Pedal Position Sensor/Switch '8' Circuit Range/Performance

[@macciao143]

Hi, i wanted to know how it was possible to enable by means of a code the check you make when you turn on the car or the hands that come and go back up. I await your thanks.

[@norcalrey2197]

Mine had same problem about a month ago it was throwing same codes..i just ended up putting in another 3.5 tmap sensor

[@jake_spence]

Good to know, glad that fixed your problem!

[@mjt-ew8rs]

oh wow man, congrats on your real doll showing up

[@TurboBMRProjectLove]

lawlz

[@AutoBodyEverything]

BMW are amazing cars until the check engine light comes on.

[@jake_spence]

No one likes a check engine light lol.

[@AutoBodyEverything]

So when men reach the age of 50 do they also go into limp mode?

[@setterlee]

Dude good video... I really share with you the expression when the limp mode come again hahahahahaha

[@jake_spence]

Haha that stupid check engine light!

[@Kipitrl]

Crankshaft/camshaft position sensor??? I think it would throw a crankshaft code though... similar symptoms bouncing idle car dying..

[@jake_spence]

True, similar symptoms but I think I'd be getting some crankshaft codes. I dunno...

[@JoseGonzalez-zq7bn]

How do you make you exhaust blip like that on start?! Without resting your foot on the throttle

[@jake_spence]

No idea, car just does it lol.

[@danekeeper1]

just throwing this out....you're making some xtra heat in yer Bavarian bomb...potentiometers are susceptible to heat stresses...open the TBI and clean and check for high resistance on yer tracks...get some ISTA D software also.

[@jake_spence]

Good point!

[@Iceman125967]

Its the 02 sensor

[@jake_spence]

I already replaced all 4.

[@sansanper7562]

I think you have a vacuum leak. Maybe your intake manifold is sucking air somewhere.

[@jake_spence]

I just tested it for vacuum and boost leaks, didn't find anything 😕

[@victore8297]

Damn bro, I was hoping the swapped throttle body would've helped and then disappointment. Lol. Time to hunt down wires and check for continuity. Good luck.

[@jake_spence]

Lol, you and me both! I just traced it down to a bent pin in the JB4/ECU harness.

[@CarlosJZ]

Are the stock turbos/wastegates warrantied up to 10 years or 8 years?

[@jake_spence]

I believe 8 years and/or 82k miles.

[@CarlosJZ]

Jake Spence thanks Jake.

[@GokuTheHusky]

Just try cleaning the sensor and the body with maf cleaner

[@jake_spence]

I tried that.

[@marksteinbarth]

Hi, what steering wheel is in your car? Is it a carbon/suede wrap? Where did you get it from. Many thanks. Love your videos. Mark

[@jake_spence]

Yes, it is carbon and alcantara. I got it from Nelson Racing Wheels: www.nelsonracingwheel.com/shop

[@ttseroga1986]

Jake, i think you should dial the horsepower back to 749 because rumor has it that alot of problems come at 750+. 😁

[@jake_spence]

LOL no kidding!

[@diaz7342]

Sooo i noticed the navigation screen flip up once car is in the in position.....how did u do tht?its amazing 🤯🤯🤯🤯

[@jake_spence]

That's just how the stock iDrive unit is the pre-LCI E82 (1 series).

[@pablosantillan7290]

Try resetting throttle adaptations, had the same problem on my n54 fixed it right away 👍

[@matty7x5]

watch the video lmfao

[@jake_spence]

Lol, yeah, I tried that.

[@steveyp94]

Hey Jake are you still rocking the xclutch than or has it been removed and back to spec? I need a need clutch in my 135i with hopes of stage 2. New to you channel and really enjoying it!

[@Vympel777]

Check for air leaks

[@jake_spence]

I did, see the most recent video.

[@BIMMERZEITT]

What spark plugs do you recommend for a stock 335i? And what plugs for a modest stage 1 flash tune (no other mods).

[@blakepascual8873]

BIMMER ZEIT if you haven’t changed your plugs in a while, then I would go with either a stock style plug. If you plan on going with stage2/2+ or FBO I would go with a 1 step colder plug. NGK 95770 Laser Iridium are proven to work well

[@blakepascual8873]

You can’t go wrong with 1 step colder plugs. Here’s the link to the description and part numbers etc. www.amazon.com/s?k=ngk+95770&adgrpid=55234163719&hvadid=274727067988&hvdev=m&hvlocphy=9031564&hvnetw=g&hvpos=1t1&hvqmt=b&hvrand=13539386807756224912&hvtargid=kwd-300394913949&hydadcr=25852_9639376&tag=hydsma-20&ref=pd_sl_7w4cngey3v_b

[@jake_spence]

Yes, the NGK 95770 is a great plug for stock or slightly modified 335i. However, they're on a nationwide back-order. Looks like they'll be ready in September. Most of the ones floating around eBay/Amazon are fake. If you're staying stock for the foreseeable future, you can use a OEM-style Bosch plug (3-prong).

[@BIMMERZEITT]

@@jake_spence looks like you're correct about the backorder through September... never heard of such a thing! What the heck!

[@BIMMERZEITT]

@@jake_spence yo I just picked up a set of 95770 from Twisted Tuning. Can't find them in stock anywhere else. They arrived today, and are legit.

[@luisalonsomartinez8360]

Loose Jb4 connections, had a similar issue with mine

[@jake_spence]

Yup, I think this is the issue based on things I've read and other comments!

[@KyleLovesBass]

@@jake_spence I had the same issue, loose JB4 connection as well :)

[@tristanrediger]

How is your splice job from the new manifold??

[@jake_spence]

I used good weatherproof crimps, but might re-do it with soldering crimps.

[@sherylellingson3538]

without watching the video, it probably wasn't wise to make 750 HP in a 1 series BMW.

[@jake_spence]

You must not be familiar with the N54 engine.

[@nourjebokji7054]

Sorry bud I love to help you but I have to do troubleshooting this the only way to find out what's going on

[@jake_spence]

I uploaded a new video showing the fix :)

[@Aguinaldo06]

Hi, How do you have an oil gauge? Did you change the dashboard?

[@Aratixwrx]

I guarantee you its the wiring extension.

[@jake_spence]

I think I will re-do the extensions either way, but I just checked the harnesses for the JB4 to the ECU and found a bent pin which seems to be the problem. I must've bent a pin when I installed it! Straightened it out, cleaned up the connections and all seems better.

[@KozmikEl7]

Wow bro....sorry here, have you tried resetting throttle through mhd app or protools app?

[@jake_spence]

Yes, I did that towards the end of the video 😕

[@KozmikEl7]

@@jake_spence Yeah I saw that lol late response on my part but when I had a problem very similar to yours I had to disable jb4 before I could run mhd to reset adaptions and it worked Just a thought best of luck bro.

[@HowToNation]

So what was the issue?

[@robamg63s58]

People like to altered their car! Pushing to the limit.. then complaining when the car get broke! And says it’s not reliable.. well it’s none of my business but I’m just saying! I have an MB about almost 4yrs now & BMW 2018/340i performance package. Maybe it’s not my thing to do a modification/altering of a factory setting.., Love the way the car it is & the car will last a little longer. That’s why I’m buying a car that has a performance from factory. Just do a good proper maintenance.

[@jake_spence]

I know I'm playing with fire, but this is my toy and I love modifying it!

[@uncleshrek32]

Eccentric Shaft Sensor, maybe

[@jake_spence]

It was a wiring issue!

[@jflores__24]

Watch it be the MAF sensor lol

[@jake_spence]

This car doesn't have a MAF sensor. I tried replacing the manifold MAP sensor, but it could be the charge pipe MAP sensor as well.

[@y30_bye]

Hey Jake, have to capped off the bung on the throttle body? I run a similar mani to you and single turbo and just wondering why it’s been capped off? Thanks

[@jonasgabriel44]

From wish year is your car ?

[@jake_spence]

2008

[@somshu238]

get rid of that JB4 heap of shit , causes heaps of issues, since I went to a custom tune, I haven't had any issues and all I did was remove the jb4

[@jake_spence]

I love my JB4. It works great when setup properly. I don't see myself getting rid of it anytime soon, I like it too much lol.

[@jako_b5828]

Try to change the accelerator

[@jake_spence]

I will if I have to.

[@eduannpotgieter7952]

Chek JB4 connections

[@jake_spence]

I just checked the harnesses for the JB4 to the ECU and found a bent pin which seems to be the problem. I must've bent a pin when I installed it! Straightened it out, cleaned up the connections and all seems better. Bingo!

[@Johnniboi]

Stand alone tune would be nice but expensive

[@jake_spence]

Yup, maybe one day!

[@bmwsincekid]

Conejo Music what is stand alone tune means?

[@konfusedmind6659]

Hy , u said u had to moddify u'r cable harness to fit the new intake, i will start looking into that , jb4 , also when u changed the clutch ..are u sure that the wire harness didn't get damaged..?

[@jake_spence]

I just traced it down to a bent pin in the JB4/ECU harness!

[@komtgoed8330]

Damaged A tooth on the flywheel or crank sensor damaged.

[@jake_spence]

I just checked the harnesses for the JB4 to ECU and found a bent pin which seems to be the problem!

[@komtgoed8330]

Jake Spence good News! Congrats!

[@theodorecendejas1343]

maf sensor.... OR air intake leak

[@jake_spence]

Checked both, it was a wiring issue!

[@angle8676]

O2 sensor.

[@jake_spence]

I already replaced all 4.

[@angle8676]

@@jake_spence im having same issue with my 328i and coder tell me o2 sensor i need to chane it soon but i would like to here if you ever fixed ur issue, thank you for video though.

[@AnthonyStromDesign]

I'll just stick with my 128i n52 engine for now.

[@jake_spence]

Can't go wrong with the N52... I just got bit by the power bug!

[@AnthonyStromDesign]

@@jake_spence I'm sure will too. Working on turbo is a bit intimidating. Thanks for your informative vids!

[@emcovlogs_136]

yayyyyyyy jake spence content

[@jake_spence]

🙏