Evo 8 ECU In 2g Works!!

[clockworktoy]

Can't wait to get back home and try out the new SD patch. Ill let you guys know how it goes.

 

[mike96]

The state of Nevada and I have a love hate relationship..... Normally I love hating the Nevada DMV but on days like today I just straight love them....

I just passed Nevada emissions in my 96 eclipse with an 03 evo8 ECU installed... no cat... no rear o2.... and EGR disabled.....

So I to will be switching to SD as soon as I get a sensor bung welded in for the IAT sensor...

 

[tom04841]

Are you running Tephra patched roms? If so try disabling valet mode.

Yes, and i have valet and immob disabled.

 

[the_mork]

I'm going to be out of town for the week and without an internet connection of any better quality than two cans and a string but if you email me your rom I will take a look at it. I left my tuning laptop at home but if you get it to me in the next 20 minutes I have a more or less complete set of definitions on my work laptop so I can at least get an idea of what is going on.

I'll PM you my email address if you don't still have it.

 

[clockworktoy]

Has anyone had any problems with their tps reading differently after using the evo ecu? I know my afc read 100% while i was WOT before but now evoscan doesn't record above 97%. Anyone else have a similar problem?

 

[mike96]

i seem to have a simular issue but i am not really doing anything that i need it to show 100%. from what i have read it seems to be a common thing with evo ecu's. some show idle as high as 13% and others show WOT between 95% - 100%.

 

[jrohner]

Has anyone had any problems with their tps reading differently after using the evo ecu? I know my afc read 100% while i was WOT before but now evoscan doesn't record above 97%. Anyone else have a similar problem?

The TPS showing 100% on an afc means pretty much nothing to how it's adjusted, because they are calibrated in the afc for 0% and 100%.

In Evoscan mine shows 100%, or sometimes 99.something depending on just how hard I'm pushing on the pedal. If yours shows less, just adjust your TPS.

 

[steve]

If yours shows less, just adjust your TPS.

If your TPS is correctly adjusted and your throttle butterfly is fully open, what the ECU reads at WOT doesn't really matter within reason.

 

[jrohner]

It does control the deceleration fuel cut, so it's nice to have the TPS at least adjusted to be able to do that. But yeah, the TPS isn't a very important sensor for fueling calculations on these cars.

 

[clockworktoy]

I hadn't even though about that before, guess ill adjust my tps and see how that goes. Just found it kind of odd that even with my old logger it still read 100% and not just my afc. Thanks for the help on the noob moment of mine.

 

[steve]

Just found it kind of odd that even with my old logger it still read 100% and not just my afc.

Both the SAFC and OBD II show scaled percentages based on the high and low voltages that they have seen. With DSMLink or a MUT scanner you can see the raw voltages. On a 1G the logger default is actual percentages except for DSMLink users.

 

[hediki12]

first i must say yay i can finaly post . ok i just got my evo 8 ecu today fooooooorrrrrrrr 50$ !!!!!. . i already have the 1.3 cable and im waiting on a email for the serial number to my evo scan ( comp crashed and i dont remember it for the reinstall). ive been prepping my rom for upload just the basics using the 9653 v5.10 tephra mod.ive also set my injectors to 412 using the same ratio as the evo. so quick question. how do i disable lean spool? ive read on evom that just set the start and stop rpm the same... just want an opinion for ppl using it on eclipses and talons. second to disable alt fuel maps do i set the number in the mods section to " 0 " ? ill show you what ive changed it to now.

You must be logged in to view this image or video.

 

[the_mork]

There is a periphery bit for lean spool.

Boolean flags are 1=yes or on and 0=no or off.

Remember that you need to adjust for the difference in fuel pressure between an evo and an eclipse. Evos use 38psi base and DSMs use 42.5 (IIRC) so your injector scaling needs to be taller, you should actually be pretty close to 450 (but still under.

 

[hediki12]

There is a periphery bit for lean spool.

Boolean flags are 1=yes or on and 0=no or off.

Remember that you need to adjust for the difference in fuel pressure between an evo and an eclipse. Evos use 38psi base and DSMs use 42.5 (IIRC) so your injector scaling needs to be taller, you should actually be pretty close to 450 (but still under.

yea boolean failed c++ in college ..... ok so your sayin since the f.p is different then i should bump up the inj scaling... gotcha also the mod settings look pretty decent then correct?

 

[GSXDNA]

The only issue I'm currently having is the idle. I have an ISC that works, yet my idle is just stupid. When I start it cold, I have to hold the throttle for a couple seconds or it will just die. Then it idles kinda slow until warmed up. If I turn my headlights on, it's almost a guaranteed die until warmed up pretty good. I swapped the idle maps in my 96530006 tephramod rom to maps from the 91470015 rom, and I havent yet decided whether it's better or worse. Once warmed up, it idles around 950-1000 with the lights on (where I want it) but 11-1200 with the lights off. My 1G always idles great, and that's without a working ISC.

I actually had a better, more consistent idle before even though I always left the ISC unplugged, and I never had to touch the throttle to start it even when it was 0 degrees or less out this winter.

I used to have the same problem. Try lowering your injector latency compensation values at 12v. That did the trick for me.

 

[Sublime_06]

Is it a requirment to buy one of the evo 8 wiring harness for almost 200..?

 

[mike96]

Is it a requirment to buy one of the evo 8 wiring harness for almost 200..?

absolutely not. the only thing you might have a problem with is, sometimes it is a bit of a stretch moving two wires from the first connector to the second.. all depends on how much slack the factory gave you.

 

[hediki12]

Just an FYI, I found what appears to be the latency values for the stock 450cc injectors.

I'm throwing this out there in hopes that someone can confirm this is correct for me and any others who aren't upgrading injectors at the same time as the ecu swap.

Stock injector latency settings for 450cc injectors on a 2g DSM:
18.7v = .456
16.35v = .552
14.0v = .648
11.68v = .840
9.34v = 1.152
7.0v = 2.112
4.7v = 4.056

Also, according to some of the 3G guys using EcuFlash who've done a turbo and evo ecu install, the 450cc injectors should be scaled globally at 412.

did any one confirm this? and i was goin to use the 412 as global bcuz of the ration i went with but i opted for the 424 instead. does anyone know if this works better than the evos IBV?

 

[steve]

I use 411cc as the factor for the factory 450cc injectors running at the 36.3 psi base pressure used on a manual 1G. On a 2G I would use 450cc because of their base fuel pressure.

What is the base pressure on an EVO VIII?

 

[Gamble97]

What is the base pressure on an EVO VIII?

Depending who you ask its 38-43psi ; I’m pretty sure it’s 43.

 

[Ceddy]

For 450s @ 43.5 base pressure you should use a hex value of 0x0045.
That is from the 98/99 flash ecus.

EcuFlash has a conversion of 29241/x
Which would give you 424 cc/min.

I've found the conversion 31050/x to be much closer.
It will give you 450cc/min.


Basically enter 424cc for 450s.

The Latency I have from the 98/99 DSM ecu are:
4.69v = 3.825
7.03v = 1.815
9.38v = 1.125
11.72v = 0.795
14.06v = 0.585
16.41v = 0.435
18.68v = 0.315


I'm pretty sure the newer evos have 38 psi base pressure.

 

[VETTE_50_TH]

Mutiple threads on evom are consistent with 43 or 43.5 base FP.

James

 

[Evo_kid]

Hey everyone in this thread. Im evo_kid. I made the how-to's on how to control boost with the EVO ECU. I also have a good amount of ECUflash/EVOScan knowledge. If ya have any questions, ask them and ill answer them or show ya where to find answers

 

[Evo_kid]

Can evoflash/evoscan support a gm maf and a 3.3bar sensor?

Best MAP to use with EVOscan is the JDM MAP sensor, which can be bought from vendors on Evom.net

 

[Hubbard 0]

Awesome to be getting this much attention in here.

Also super great that I can finally post in these sections now.

I've been running the Evo ECU on and off now since december when this thread was only a page or two long. One thing that I still haven't been able to figure out is the interchangibility of ROMs. I have 941500017 and have also had the crank and cam angle sensor issue. What kind of options do I have for changing to other roms?