CARBON CLEANING and Fuel Mods on the VW Mk5 GTI // TFSI

CARBON CLEANING and fuelling mods on my Mk5 GTI!!
HPFP - RS4 FPRV - Runner Flap Delete - 200BAR Rail Sensor - 3BAR Map Sensor
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The camera I use in the garage:
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The camera I use outside of the garage:
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A selection of the tools I use:
1/2" Torque Wrench: amzn.to/2vXQwPZ
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The Scales you should get... :amzn.to/3aqSgjv

[@friscostreetstories5403]

TfSI motors suck because of this. Gimme a Vr6 any day.

[@richardstubbings6962]

Honestly every time it’s like lessons with Teacher Nick. So many numerical equations flowing round, the talking Haynes manual. 🤣👍🏻

[@DecimalTenths]

🤣 or boring twat as the wife thinks...🤣👍

[@robinschweizer2471]

Nooo dont Remove the Flaps :( you have an Direct injection you need Tumble , gasoline will not good mixing with air without it ...... full Throttle they Open Full but less throttel they will affect a good Thumble for more Torque and less fuel consumption ! I Hope you have to fully fill your Highpressure Pump before start it !!!!

[@DecimalTenths]

We find that we are changing so much of the characteristics of the engine, and increasing torque over the full rpm range, that the flaps then become redundant.

[@Miaxkash]

The results from the carbon cleaning were really impressive I haven’t seen such results from anyone else ! Great stuff as always

[@DecimalTenths]

Cheers, it does make a huge difference 👍

[@Siaynoq8]

My engine is stuttering really bad at 3000rpm. Do you think a carbon cleaning would help this? I have no check engine light on.

[@williamwhite5202]

Just started watching your vids I'm new to the golf gti so every day's a learning day love the reg on your other mk5 WKW that's my initials great vids that's my Friday night sorted

[@mk5_FSI]

@@Siaynoq8did you ever fix that problem I’m almost having the same problem

[@Siaynoq8]

@@mk5_FSI Oddly it went away on its own which almost never happens, right? It was like that when it was first delivered to me so I just think something happened to it that some new premium gas and some miles driven couldn't fix. I still wish I knew EXACTLY what it was, though.

[@sjr999r]

With my mk5 GTI k03 at 168k miles 😳🫣. Can I put internals into my HPFP? Or would it be best to buy a new pump and upgrade the internals? Cheers Learning alot from your videos 👍🏼

[@DecimalTenths]

Bang the internals in your existing pump dude. 👍

[@kylejesson1774]

good work bud sorry for the lait comment. But was that golf having misfire issues ?

[@DecimalTenths]

No this was to facilitate the upgrades, but we do this a lot for misfire issues.

[@eltonbien7677]

Ia there coding required when doing the delete? Have you had problems with it after thr delete?

[@DecimalTenths]

Do you mean the runner flaps? They do have to be mapped out. I cover it in a different video.

[@teezy_s]

Ive had my K04 on the shelf for a few years now .. just wasnt interested enough in fitting it .. but came across ur videos regarding this and they gonna be a mega help ... 2024!

[@DecimalTenths]

Do it!!! 🔥🤣

[@NorthCoastWorkshop]

I had my engine in this state last December. A bad smell of fuel, and poor starting each morning turned out to be 2 perished injector seals, so the rail lost pressure overnight. Anyway, wish I had that walnut blasting machine at the time, cable ties, carb cleaner and pick was not as glamorous 😂 Really enjoying the content mate, and the additional info into the FRV upgrade, what the runner flaps actually do, and 5mm mod is so good to know. Appreciate the work you put into these vids 🔥👍🏻

[@DecimalTenths]

Pleasure dude 👍

[@kevinmchale6637]

So much info need to watch it twice! 🤯 nice to see what all these mods actually are and do. Great video!!

[@DecimalTenths]

Watch it then share it...😝🤣

[@kevinmchale6637]

@@DecimalTenths 🫡

[@sidbobby3233]

Does removing the flaps then hurt response then or because ur tuning the engine u can work/map round that Mate? Tip top video mate and loving this type of work u r doing. Thanks again fellas. Sid

[@DecimalTenths]

As soon as we change the whole design of the system, such as intercooler, intake, exhaust, turbo etc there is that much changing, with the end callibration we tend to always see improvements across the board.

[@sidbobby3233]

Thanks mate for reply. Good to see u putting more vid's up and the lights in workshop look epic mate. Be safe & be lucky. 👊✌

[@sidbobby3233]

Thanks mate the reason I mentioned the flaps is because u still retained the stock inlet manifold I no that modified turbo, pipe & intercooler will mean less restrictions ect but would removing the flaps still move ur torque curve up the rpm or bcoz of mods + psi increase make the flaps delete no problem anymore

[@fuhadali5086]

What runner flap delete kit did you use and do you supply them?

[@DecimalTenths]

Yes we supply them pal, got them on the shelf.

[@c4lho888]

Can I ask you could the rs4 fuel return valve make the injectors over fuel on idle?

[@kevinmallon8692]

You should get a coffee brand to sponsor you 😉

[@DecimalTenths]

Tea only brother 👌👍

[@dommoss4264]

Another really useful vid, like how you break it down and made so it’s understandable to us morons. I would like to see a drag aircooled vw in your stable but don’t know how you would fit in any time to use it.

[@DecimalTenths]

Cheers! Air cooled just isn't my thing I'm afraid 😝. Water... and turbos 🤣

[@roystonhughes3278]

Top guys decimal Tenths Colin Nick Calum when asking about my problem with 1.8t 🙏 respect

[@Quick2004]

Where buy parts from mate ?

[@DecimalTenths]

Get anything you need from us at www.decimaltenths.co.uk . If there's anything you can find then send us a message and we can sort it.

[@jonclark25]

Loving the frequent videos lately. When we going to see the updates on the track mk5 build😯

[@DecimalTenths]

When they happen...🙈🤣🤣

[@c4lho888]

do yoou have the part number for the 2 upgraded sensors?

[@CarChris82]

great job on that mate i have had the carbon clean done but the other bits you have done to the inlet manifold are giving me ideas 👍👍

[@DecimalTenths]

Just supporting everyone else on their own slippery slope mate...🤣

[@Dailydrivdncars3125]

Is that the same mod needed for a mk6 gti 2012 plate ?

[@DecimalTenths]

Nope Mk6 GTI are an EA888.1 engine (different)

[@Dailydrivdncars3125]

@@DecimalTenths what mods would you recommend for the mk6 please. And can you recommend a clutch as I would like to up the power to stage 1 if possible?

[@Da_Jrac]

Arent most of these parts stock on the Mk6 Golf R?

[@DecimalTenths]

Yes most of the upgrade parts on this car are stock on a 6R.

[@Da_Jrac]

So the R is packing then huh 😂 No wonder the difference between the GTI and R is so notable, a stock manual R feels so much faster and pushy than a DSG GTI already with a few upgrades on it, the difference is actually absolute insane!

[@phdiy3913]

Question 😂🙈 is the Bosch sensor specific to the golf or a generic recommendation as I have an issue with my van after replacing the sensor twice 🤦‍♂️🤦‍♂️🤦‍♂️👌👌👌

[@DecimalTenths]

I'd always suggest sticking with Bosch electronic devices on Bosch engine management. Any deviation generally causes issues.

[@matthewloncar9115]

Newbie diy'er here with a mk5 and I just did the thermostat myself, you're not kidding XD Alternator, throttle body piping, tensioner/serp belt and charcoal cannister all off. Then it's still super tight and fiddly with the piping to the thermostat. 200,000km engine and hopefully that never needs to be done again. Loving your mk5 series, learning something new every video. Cheers from Aus.

[@DecimalTenths]

Nice one! Yeah it's a fiddly job. You should never need to do it again

[@davidkane8660]

Another great vid nick..... I like the step by step tutorial style vid actually gives an insight as in to how to do it👍🏻👍🏻

[@patrickvanherk]

What cleaner did you use for the valves?

[@DecimalTenths]

Crushed walnut shells 👍

[@patrickvanherk]

@@DecimalTenths Thanks but I meant what device? There are lots on sale but I'm looking for something that is half decent and actually works like yours does

[@c4lho888]

HI THere wat 200 bar sensor is it from ?

[@zoltanbalint8681]

Any problems from also removing the flaps from the head? I heard they rather put them back when doing a RFD...

[@DecimalTenths]

No, if you are doing a RFD , then also remove the divider plates in the head. They are only used in conjunction with the flaps.

[@waqashussain2310]

Does a runner flap delete kit put an engine light on the dash?

[@DecimalTenths]

It will give a few codes, bit generally they will not put the MIL on.

[@waqashussain2310]

@@DecimalTenths is there a rough idle when you cold start due to the flap delete as I am going to view a car but not sure whether it’s worth it as there are 2 lights on dash and he is sayin one for the delete and one for the res delete ? THANKS you

[@noahreiboldt9956]

I’ve done a timing belt service with new water pump, intake carbon clean walnut blast, new hpfp, upgraded dv on my 2006 mk5 tfsi jetta gli. everything’s snapped back together nicely. now i’m dealing with a strong healthy crank but no start…any advice?

[@DecimalTenths]

My guess would be fuelling. I'd plug in a diagnostic tool or vcds and see if you have fuel pressure.

[@propm]

On my Audi B7 2 tfsi my thermostat was bad and the coolant flange was leaking at the same time 😮‍💨both were a pain to replace, especially the coolant flange, I hope I don't have to do that again.

[@DecimalTenths]

Yeah common on the B7s as its the TSI platform. All modern vags have crap stats, pumps, flanges etc... 🙈

[@abderrahmanegouasmi7556]

I can't stop rewieng your video. Absolutely interesting and smart tuninig explanation. I subscribe! Thank you.

[@DecimalTenths]

Thanks! Nice to have you on board

[@caveone-365]

Surprised you don't have a catch can setup. Especially with the amount of crap that these D.I. engines build up and recirculate. They make a substantial difference. I.E. makes a nice one. Good call on the cam follower replacement. One of the only things that I used to see on these cars when I was at the stealership was varying degrees of carnage inside the chain cover. Smashed follower, flat spotted cam lobe, chewed up/ grinding marks inside the cover, etc. Some people hear the noise and just let it go... 😒🙄 The only other things that were notorious to replace at the stealer we're the PCV, manifold as a complete unit, and the purge solenoid. All common failures. Love this project! Keep up the excellent work brother!👍👍💪✌️🙂

[@DecimalTenths]

Why thankyou sir 👍

[@sidbobby3233]

Ps when vid on escort cosy? 🖒👊✌

[@DecimalTenths]

Very very soon...

[@sidbobby3233]

Can't wait I am a massive Ford lover but have a genuine soft spot for the VAG cars and love what u guys r doing up there. 🖒🖒👊✌

[@tomerdahan007]

Hi mate, Would you mind explaining what is that toll you use to wash the the valves tunnels from carbon?

[@DecimalTenths]

I explain it in the video, but I blast the intakes with crushed walnut shells. These get rid of the carbon but don't damage the head or valves. If there's any left then they combust instantly and cause no damage.

[@half_r_mk5]

what is the part # of the 200 bar rail pressure sensor?

[@DecimalTenths]

06J906054B 🙂

[@half_r_mk5]

@@DecimalTenths I think that's the one I have as I also did Intake Manifold, and I noticed my rail sensor was orange. Car has a swapped MK6 Golf R engine with a Precision 5858 turbo, RS4 Injectors, RS4 PRV, TT-RS LPFP, TorqByte PM4 module and also Snow Performance W/M injection. I only need to do the 5mm drilling of the HPFP as the one you did. Its bonkers setup.

[@andrewtaylor9704]

This content is epic. Thank you.

[@DecimalTenths]

That comment is epic... thank you 😉

[@jpra64]

Any good can products for direct injection carbon cleaning? Like fuel additives that clean injectors tips or sprays for intake valves if any of that stuff even works but you know the lazy way to clean carbon

[@DecimalTenths]

Nope...😝

[@abrarali7351]

Are you planning to swap the stock diverted valve for an aftermarket one? Can you let me know which one you're planning to use?

[@DecimalTenths]

No I'll be using a genuine Rev G diverter.

[@chrishall4558]

Really good and very well explained video, looking forward to the future progress on this car

[@jjones6308]

What's the rough cost of all these upgrades parts and labour? Top content mate

[@DecimalTenths]

I'm going to do a costings video very soon. I'll just get it mapped first, so its complete 👍

[@jjones6308]

Thanks 👍 really good content mate just watched all the golf ones one after another 😂 looking forward to more

[@SpeedingTube]

Awesome mate, nice to see some detailed step by step video’s on the TFSi 🙌🔥

[@DecimalTenths]

😎👍👍

[@Daddycooldaddycool]

Hi Nick, What's the price to get the walnut blasting done? would really like mine cleaned

[@DecimalTenths]

For a 4 cylinder TFSI like this we charge £360 which includes full injector servicing with upgraded filter and seals, and gaskets. 😁

[@matk22]

That's a wicked bit of kit that carbon cleaner.

[@tonygovender3805]

Thank you brother, I'm a bmw mechanic and I bought an audi tt. I'm learning from you. Great videos and very informative 👏 👍

[@DecimalTenths]

Very welcome pal cheers 👍

[@manx1641]

How does removing the runner flaps affect the drivability ?

[@DecimalTenths]

On a stock car, slight low down torque can be lost. On a highly modified car it's nigh on irrelevant.

[@chrisrutherford3862]

Always good when you get a win working on a car Nice man

[@kevinmallon8692]

Just had my 250k A3 bpy fsi walnut blasted. Looked worse than yours probably never cleaned. Im stage 2 Unitronic APR sells RFD says only on Stage 2+ and up so i kept the flaps. After 70k on the ngk iridium 7's. I got new ones and APR coilpacks noticed improvement! I live near Toronto and id love to dump more 💰 into her!

[@DecimalTenths]

Yeah man a lot of them never get touched and sometimes we find them in terrible condition. Well worth doing 👍

[@kevinmallon8692]

@@DecimalTenths whats the reason for RFD? For gains or problems with flaps breaking off? 🤔

[@roafelix8198]

Hello, whachup doc?

[@rickydub6950]

Really interesting work there man 👍 loads of wee jobs all add up, walnut blast worked a treat too 😁👌

[@DecimalTenths]

Yeah its a great way of cleaning them 👍

[@AUDIDOIT]

Superb tutorial 👍

[@Curiosity_Cars]

when you getting IGniTron back in stock mate ?

[@DecimalTenths]

We get them as and when they become available dude. If you need one then send us a message on fb and we can sort it

[@feonics8917]

Mate, learning so much from the video. Best video about MK5 gti i've found. Keep them going! More please! I've owned my Gti a year and it's starting to get issues so this really gives a good idea where to start looking as well. If only I had any mechanics training! 😢😢

[@DecimalTenths]

Cheers pal, more videos coming soon. 👍

[@joshuawelch9701]

do you know what kind of symptoms i would get if my fprv was stuck open? car stalled and wouldnt start 3 days after changing the lpfp(used oem).would the fuel rail pressure not build up after shut down when warm? have 83% duty at idle on pump and 2.3bar act and 4.5 spec,, kinda sounds like the lpfp?

[@DecimalTenths]

Yep sounds exactly like the lpfp is at fault 👍

[@joshuawelch9701]

@@DecimalTenths thanks man , i took pump out and blew air thru lines to make sure they werent blocked, when i pulled the pump the tube that connects inside tank was unplugged not sure if that was issue, but put back together and all the readings are spot on and its running again. duty cycle back down to around 53% at idle.mvb 231 the pressure are basically the same now.

[@stevensmith3069]

Walnut blaster brilliant I used a pick and carb cleaner 😅great vid mate 👍

[@DecimalTenths]

Haha been there, never again

[@kieranwilkie1]

Any performance gains from doing the rail pressure sensor? Some believe that you make some gains but I was under the impression it’s purely for monitoring purposes??

[@DecimalTenths]

Purely monitoring purposes. Running it allows you to monitor a higher pressure which would allow for more power. But that's indirect, and directly a pressure sensor offers no power potential

[@kieranwilkie1]

@@DecimalTenths thank you for clearing that up. I was reading up on it for quite some time to see if there was any truth behind it and found nothing solid, I wonder why…😂

[@steven907]

Brilliant video as usual

[@timj41]

Hi there, great video as always. Can you tell me please if Mk 6 CDL engine in ed35gti has runner flaps?

[@DecimalTenths]

Yes CDL engines have runner flaps 👍

[@timj41]

@@DecimalTenths thanks, great something else to wake up sweating about at 2.30am thanks for the lightning reply

[@stewyherring]

Hi mate, any suggestions any another effective ways of cleaning carbon from exhaust outlets, manifolds and even piston heads? Running a two stroke for a go kart and down under so it would be a bit expensive sending it your way🤣 Have an old engine that's a bit caked up, our new engine is gtg because I have been taking it apart and cleaning after almost every session. Great job on the channel too mate!

[@DecimalTenths]

Aqua blasting is another awesome way if the engine is in bits. Either that or just good ol elbow grease, and brake cleaner. We use a big hot wash parts washer for engine parts generally

[@stewyherring]

@@DecimalTenths Beauty, thanks for that!

[@mcjdubpower]

KR has 52mm large inlet, all other variants had 42mm.

[@DecimalTenths]

Early KRs had the 42mm too 👍

[@mcjdubpower]

@@DecimalTenths I have a KR and ABF, very different beasts, I still love the way the KR behaves, even though the ABF is so much faster, my ABF mk2 is 188hp, on the limiter 7115rpm and peak torque @7000rpm, on a 2y box 😉

[@mcjdubpower]

@@DecimalTenthsearly ones 139bhp pre-cat, later 129bhp

[@DecimalTenths]

@mcjdubpower Back in the day my favourite modification to any Mk2 was a 020 2Y box. They were immense. It saddened me when I went 20v with my Mk2 and went to an 02J gearbox...😐

[@mcjdubpower]

@@DecimalTenths I still have 2 2ys in the shed in perfect condition, both with ARP bolted diffs, just incase 🔥👊👌💪👋😉

[@careyautorepairs]

Cool video.

[@gamersroost]

At 245K miles on my BPY there was around 13mm (1/2" SAE) of space on each valve of the 8 of the intake. The cold winter starts were almost not possible in Maine USA. Now it's dead, but the new engine coming will have this done on a regular. I don't have Wal nutshell blaster, but I used the best carb cleaner plastic /brass brushes and zip ties. They were nice, but nothing like your results. Thanks as always for you videos.

[@DecimalTenths]

Cheers, I've used the zip ties in a drill trick before. Quite effective, but this takes no time and is super clean.

[@gamersroost]

@@DecimalTenths I'm going to invest in a media blaster. Fine walnut shell media is $12.00 US for 20 lbs!? So cheap.

[@payaso2297]

first

[@petermillington8185]

Great work and useful pointer’s it soon be back on road

[@DecimalTenths]

Very soon mate cheers

[@jasonsimpson1691]

Do you have to tune for the runner delete???

[@DecimalTenths]

Yes, I do that in the next video 👍

[@jonathanpinlac2030]

Nice video, I have a question though, what did you do to the Intake flap connector since you removed the entire intake flap module? Did you just leave the cable dangling? During ignition it'll need that to reset the flaps etc. Even if you did the Flap delete, when starting the car, did you manage to bypass that?

[@DecimalTenths]

Hi pal, I leave the connector in the bay, just tucked away and I then code out all of the runner flap strategy and pcodes.

[@jonathanpinlac2030]

@@DecimalTenths I left mine on connected eventhough I did the RFD on mine. Reason is I think in VAGCOM, you cannot disable this feature as it is related to emissions. So I remember now why mine is still connected, although it does keep on looping because the module still thinks there are still flaps in there.

[@jonathanpinlac2030]

@@DecimalTenths I'm just wondering if disconnecting it would cause a CEL on the dashboard. Cause if it didn't i'll remove mine as well and leave it disconnected.

[@PedalBox]

It's slightly weird that we're both putting out decarbonising videos this weekend, without planning it to happen. Can confirm carbon cleaning super satisfying to see

[@DecimalTenths]

Ooh is that this weekend? Cool mate

[@PedalBox]

Out tomorrow morning! :D

[@nelsonsoares7884]

Great video. I just have a quick question how would I do the 5mm mod on my car the has a banjo bolt style on the hpfp thx

[@DecimalTenths]

Instead of drilling out the fitting to the pump, you drill out the end of the fuel rail, where the rubber feed pipe connects. You will see that is a tiny hole on your rail. 👍

[@nelsonsoares7884]

Thx so much

[@nelsonsoares7884]

Ok so where the rubber hose supplies fuel from the fuel tank correct on the upper left side of the intake manifold

[@youtubejunkie8053]

You got my sub! Nice video

[@DecimalTenths]

Nice one 👌

[@simonhenson358]

Good informative videos these. Got me thinking does the gen 1 tsi share the same inlet as the tfsi? I'm sure I have an old inlet I was going to rfd for my old tfsi vrs and wondered if it would fit this tsi estate I have now 🤔

[@DecimalTenths]

It's not exactly the same, the gen1 TSI Runner flaps are vacuum operated

[@simonhenson358]

@@DecimalTenths best do some more homework then, all new to me this tsi coming from tfsi 😂

[@smallmick6586]

Can't wait to see the outcome of all these upgrades !!

[@DecimalTenths]

Me too 🙈🤣

[@chrilleman16]

what would it cost to get this done ?, i have very minor idle problems in my cupra R , narrowed it down to this.

[@DecimalTenths]

Carbon clean and Injector servicing is £360 for 2l TFSI with us. Get it done before the minor issue becomes a major and requires new injectors 😉

[@chrilleman16]

@@DecimalTenths oh wow thats really not that bad😁, i was expecting alot more, only problem i have rn is finding a place that does this here in sweden other than VW/seat, and they are expensive 😂

[@DecimalTenths]

@@chrilleman16 Yeah unlucky dude, that's a bummer. The carbon cleaning is important, especially for performance - but most running issues around idle are injector problems so find yourself a a local ASNU dealer and get them to service your injectors 👍

[@Flishlakv2]

very informative video now have alot better understanding of the HPFP good job mate

[@Flishlakv2]

Also thank you for pointing out the oil pressure switch mate top lad

[@DecimalTenths]

Good stuff pal 👍

[@MrSeanroyston]

Would really bad carbon build up in cylinder head cause black/grey smoke on idle or when revved

[@DecimalTenths]

On these cars that would generally be the injectors👍

[@MrSeanroyston]

i have fitted brand new injectors compression test done 200 psi on all 4 cylinders still smoking like a train

[@half_r_mk5]

@@MrSeanroyston turbo is bad if you have smoking

[@ermias01]

You make working on cars fun.

[@DecimalTenths]

Cheers, got to love it, otherwise it wouldn't be...😁

[@LinusF_]

is it possible that the car runs rich with no fault codes when having severe carbon build up?

[@DecimalTenths]

There is a potential for a lack of airflow, and therefore a small amount of additional fuel, however the fuel trims will take car of this and show so a logging session would most probably identify the cause. Is the overfuelling or just smell of petrol, which could be unburnt fuel from slight misfires which is also common.

[@LinusF_]

​@@DecimalTenths can i log this with obd11? there is some unburnt fuel coming out the exhaust, at the yearly car inspection i had 140 hydrocarbon value on the exhaust test at 2500 rpm and the maximum legal limit is 100.

[@DecimalTenths]

@@LinusF_ Don't know dude, I'm a vcds user 😬

[@CR15PY1]

I’m trying to learn what the fuel hoses are called at 18:05

[@DecimalTenths]

What they're called?

[@CR15PY1]

@@DecimalTenths yes just the name of the 3. They’re colored with a dash i noticed on mine

[@joeashnaidoo5077]

Can you include the part numbers for all these please

[@WasnClown]

Awesome mate!

[@DecimalTenths]

🙏

[@herlandermesquita947]

Always learning... Good tips for the high pressure pump and injection sensor... 👀👍 Another situation, I am currently changing to take the catch can and avoid this problem but I also have the EVAP pipe/connection (system canister blablablá) here.... Can I remove it too? Is there no problem covering it permanently? This project is for tracks only! 😃

[@herlandermesquita947]

I think it would make everything cleaner and breathe better = 👀more power!!! 😈

[@jonboyy1327]

Superb video. Currently in the process of buying back my S3 8P 2 years later. Remember going this inlet clean on my car as well. Mind blowing the difference after cleaning

[@DecimalTenths]

Cheers!! You must love your S3 😁👍

[@jonboyy1327]

@@DecimalTenths This will be the 3rd time of owning it. Looking at going Venom450 this time with it & a built engine. You do mapping for customers as well or just your personal cars ?

[@DecimalTenths]

@Jonboyy Nice! The S3 is a great platform for a Venom turbo 🔥. Yes pal I custom tune TFSIs for customers. Have a peek over at our FB page 👍

[@jonboyy1327]

@@DecimalTenths Thats very useful to know about mapping thank you. It currently has a R-Tech 2+ on it. I’ve actually got the car back with a missfire & smoke on idle along with no compression on cylinder 2. Before the smoke / no compression it had crank sensor issue. If I was to take a guess at Piston ring failure or piston itself do you think that would be accurate ?

[@DecimalTenths]

@Jonboyy Yes ring landing failure is the most common assumption on them for that loss of compression. Never know til you get in there though 👍

[@RacingLew]

Would you recommend doing them all at once and then getting car mapped or would it be possible to do them individually and then get it mapped after they all done ?

[@DecimalTenths]

The carbon cleaning? You'll want to do them all at once given that most of the effort is removing the manifold. Wouldnt want to waste your time doing that multiple times.

[@ArmchairCarcass]

Loving the content, really enjoy learning all these little tricks to them and why you do them, even though I’ll never do them myself 😂

[@DecimalTenths]

🤣 takes up 20 mins then I suppose 😝🤣