How to Speed density evo 8 9 X, sensors and tune explained

[@BulliKid]

Cheers from Chicago! Been to blueprint before for dyno !

[@bdalchemist]

Oh, what's ur name? What kind of car .

[@BulliKid]

@@bdalchemist I went there just for dyno runs to check power with my buddy and brother. One is a 2016 lexus GSF and the other a pure turbo 335 Bmw which I have a video on the channel when I was there. Cheers!

[@phantomslayss5361]

Man this information is great. I learn something in every video. I know you specialize on Evo right now, but what things should I keep in mind when trying to apply the things you teach to my GSX application.

[@mehidihassan7362]

If ur using dmslink u should already have a sd Rom preformed. U should use specific branded sensors that the rom can read and scaling. My strategy is always 80% idle , Cruise and daily operation and only 20% wot. If u get part throttle operation right all else fall in to place and makes for a great smooth tune. I would start with 15-20 psi and try to make the ECU do 12.5 upto 15psi and by 20 psi 11.8-12. if u can get it to do that the rest is easier. Keep the timing low. Hope that makes sense

[@phantomslayss5361]

@@mehidihassan7362 That definitely makes sense. This is very important because you still need drivability

[@sohcerdad]

Great info, helps a bunch

[@HahaEVO]

You're an evo guru

[@sharewithraj]

Thanks for the vid; I am running speed density in evo 7; I have a half a second hesitation at 4.5rpm during wot what could be the issue?

[@bujubeats]

Very informative

[@andreabdool5910]

Good information thank you

[@jasonburkett3246]

Could you teach us how to tune a dual map on a stock ecu?

[@julgutierrez2528]

Great video BD Alquemist.. One question. I was goint to scale my tables to Omni 4bar, but remembered that the SD instructions I read said to adjust the xml for MAP 16bit to the Ombi4bar scalings. Is this the same thing? Thanks!

[@bdalchemist]

Yes, that scaling has been added to the ecuflash , scaling options so you don't have to do this manually.

[@momomomo89]

In ecuflash, when I change the scaling (I put Omni4bar for example), if I restart the program, to goes back to where it was before. Even if I clicked on ''Apply'', any idea why?

[@momomomo89]

Finally fixed it, I had to change it manually in the xml definition file

[@bdalchemist]

Yes , it's just they way the xml/ecu flash works. I don't change the xmls because I am tuning multiple cars that uses the same xml and I need the different scales.

[@momomomo89]

@@bdalchemist Alright, thanks for the info :)

[@vadimtsipurynda2937]

where i can get Speed Sensity Patch for my EDM Evo9?

[@Relaxationwithmeditation]

Subscribed! Do you have info on how to improve idling on 1600cc low ohm injectors, i know they arent the best but they idle at 11.5afr open loop with 14.7 afr set in fuel map, one i cruise the afr follows the map, also my min ipw is 1.75 to 2ms which seems high.

[@bdalchemist]

Need more info, what car , ecu, fuel etc. And why is the car idling on openloop?

[@Relaxationwithmeditation]

BD Alchemist evo 8, 2003, fully build 2.0 long rod, e85, walbro 450 hardwired, 3582r turbo, fully build head.

[@joerickortiz7954]

If I’m speed density right now and I’m a 2.3 stroker and 62mm turbo and have the old crushed bov mod and i want to put a forged one I have from my previous evo do I have to retune ?

[@bdalchemist]

Unless ur previous bov was leaking when tuned , u don't

[@jamespond3097]

My evo 8 MR has started revving to 3k and won't come down, even when hot! I've changed the IAV and TPS for OEM ones, still doing the same. I have 1200cc low imp injectors, standard coil packs with copper plugs. The temp sensor isn't working as it should, so I've ordered a new one. The engine was mapped to 590hp as I have rebuilt from scratch, deleting those balance shafts, new oil pump and water pump, forged everything and twin plate clutch. I cannot for the life of me understand this high revving, it's really weird.

[@bdalchemist]

Once u change the TPS u need to adjust it, so it reads what it's supposed to at closed throttle. Check for leaks, check the biss screw and offcourse ur tune

[@jamespond3097]

@@bdalchemist LEAKS! I found the blighter! The throttle body gasket was split, allowing extra air in. New gasket and a re-tune and now she flies along - cheers :)

[@robertmahaney6831]

great video. any opinion on 3d ve 2.0?

[@bdalchemist]

I have tried it a few times but sometimes it's buggy. I would stick to the 2d one.

[@rraj9293]

Hey how can i contact you? i am needing diagram to change from MAF to SD. i have a stock MAP sensor from 4g18. i am so lost man.

[@bdalchemist]

Pm me on fb "BD Alchemist"

[@MyDad-]

Do you have to get the tune the same day you replace the MAF with a Speed Density set up

[@bdalchemist]

Well , no not the same day but I shouldn't be driving without the tune for ur hardware change

[@ThuGnificent1236]

@@bdalchemist is it okay to drive to the tuner ? 2 hour max drive

[@bdalchemist]

@@ThuGnificent1236 that's a question best answered by ur tuner.

[@RainyLullabies]

I'm confused at the part where you said "at 160 load x 110% at 3500 RPMS bring you to 220 load area"? maybe my calculations are wrong but 160 X 110% gives your 16 more so wouldn't it be at 172 load?

[@bdalchemist]

You are correct sir, I made an error. But what I was meant to say was if ur at 160load and at 110% ve and ur next load cell is 180 or 240 and not granulated enough , it will take the value of the next load cell after 160 and interpolate it. I definitely made an error on description. I even said "what's is that 16 more?"I should really make a script before doing these vids. Thank you for the heads up.

[@RainyLullabies]

@@bdalchemist thanks for the explanation. I was wondering that as well when when there is not a number in your range of VE plus load it takes the next column. This is good to know.

[@mikellejames3443]

Aye bro can you help me source a part for my evo sunroof?

[@bdalchemist]

I don't do that

[@HahaEVO]

May i ask where are you located

[@bdalchemist]

Illinois is my permanent location , but this week I am in NYC, NJ and DE for tuning.

[@Veinslayer554]

Hell yeah bro im out in Aurora Illinois myself

[@bdalchemist]

@@Veinslayer554 whoooooowat!!!! That's awesome , gonna start Dyno day/meet soon. Come check me/us out

[@HahaEVO]

@@bdalchemist bro I'm in maryland man there's a big race tonight

[@jareddougherty8925]

Backwards dipstick and oil cap hurting my eyes lol

[@Geogak]

wild. I wish someone would just give a quick diagram of the variables and the math applied to them. Like a process diagram. The idea of the computer having knowledge of units is a fallacy.

[@phelicks1579]

Does Tephra usually take days to send the ROM? Had to PayPal now waiting to get the Evo 7 Rom

[@bdalchemist]

Yes

[@phelicks1579]

@@bdalchemist if i source an e7 ecu with the tephraMod ROM already installed on it from another evo , will i be able to view and edit the ROM from my pc without having downloaded it from the internet and putting it on my version of ecuflash? More specifically, will i be able to see the SD options

[@bdalchemist]

Ur computer must have the correct definitions to see it but yet u could

[@phelicks1579]

@@bdalchemist in your opinion, should i buy the E7 ecu with Tephra on it, because i cant get tephra to send the ROM to me. can i still tune with SD?

[@clutchboi4038]

@@phelicks1579 yes. as long as the immobilizer function of the ecu has been deleted you can plug it into your harness and run the engine with it and read/write with ecuflash. it will even read/write without the immobilizer delete but it wont run. I have an evo8 ecu in my eclipse.

[@7sins979]

This seems wildly inaccurate and if this is indeed how "speed density" works on the evo ecu i would not use it. your voltage to pressure should stay linear for the map sensor. the only reason to change that table is to set it up for the sensor you are using. the target afr table should be just that, target afr, tune it just like you would for a maf setup. the VE table should be the table used to setup base fueling to hit the targets set in the target afr table. looking at the latest tephra speed density appears to work as it should if you understand how to tune VE based systems. I have little reason to get away from the maf sensor right now or i would try it here but i tune haltechs regularly and tuned my dsm on SD and they all work the same. the speed density patch page on evolutionM also says to scale the MAP linearly. I can't speak to the X but the IX is not a hybrid setup and comes with a 2 bar sensor which will measure up to 202kpaa, 29.4 psia, or +14.7 psig. the maf is used full time on the IX and like the 2g dsm that map sensor is used for egr feedback. although it can be repurposed to log boost or convert over to speed density. playing with the voltage scaling of your map sensor so it shows different load values is the wrong way to do it. you even describe why it is wrong when you say it throws timing off as well. Volumetric efficiency tuning uses the ideal gas law to calculate air mass instead of measuring it then the ecu can use stoichiometry like normal to calculate the fuel mass to deliver and calculate the injector pulse to command.

[@7sins979]

also for the love of god do not use fuel temp in place of air temp. that value is used to calculate the density of the air coming into the engine and is not remotely reflected in fuel temp.

[@clutchboi4038]

The speed density kit I'm looking at from JD customs has an air inlet temp sensor so I think he is indeed wrong about needing to maintain the maf. To be fair though I think he was merely talking about the effect of not mapping the sensor correctly and the potential effects that would have. He then said it shouldn't be done that way and fuel delivery should be taken care of in the fuel map. so eh.