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Engine Management
Posted: Thu Mar 04, 2010 10:27 pm
by Florin1
My Sob Story
So, here i am a month after doing my swap, and feel kind of alone. I swapped these items over td04, 550cc's, 06 IC, (jecs sitting not installed yet), walbro 255, and most recent, my clutch. (car also has MBC and a 3" turbo back) I was ready for my chip.
Well, since Revtronix dropped off the face of the earth, that was bad timing on my part. Now, I'm sitting here with a poor running car and i do not feel like returning it back to stock. I would rather burn the car haha. I've been driving the car for a month plus now getting like 180 miles per full tank. That sucks. I can't go past half throttle because the car chokes, probably drowning in fuel.
My question is, what did you old school guys do to your cars to make 'em run right before RT was on the scene? Mechanical part of automotive is familiar to me, but the electrical, not so much. I hear the name "link EM" and some others and i guess my question is, If RT doesn't come back, what will i do?? Will i have to spend $1000 on EM? And another 3-400 on tuning? If that's the case... Burn it?
I'm not loaded, because if i was, id get an STI.
Re: Engine Management
Posted: Thu Mar 04, 2010 11:13 pm
by jaybirde508
get a safc or get some 440 from egay,the 440's will run fine on stock ecu the 550's wont.I ran 440s for 3 months before up'ing to the 550's which ,well yas need something to run them,440's & tdo4 nice setup
Jay
Re: Engine Management
Posted: Fri Mar 05, 2010 12:10 am
by Florin1
so you're saying i dont need EM with my mods if i buy smaller injectors? Even with all the mods?
Re: Engine Management
Posted: Fri Mar 05, 2010 1:00 am
by ericem
If you are running the td04 and IC. Just leave the stock BCS and put back the stock injectors! It will be fine.
Re: Engine Management
Posted: Fri Mar 05, 2010 2:17 am
by Florin1
but i wanna go fast... Faster than a wrx at least! Shouldn't our cars be faster than a wrx since we have 2.2L vs 2.0. And not sure if my BCS is still there. I got the car with a MBC.
Re: Engine Management
Posted: Fri Mar 05, 2010 2:23 am
by ericem
Technically completely stock no. Displacement isn't everything. Plus the wrx engine has better heads, but we got the better block so we can run much higher boost more reliably then a wrx so we do win! With stage 2 it is definitely faster then a wrx almost at a STi ALMOST!!!! I was running td04 and 06 ic with the stage 2 on 440cc injectors.
Just put back the stock injectors and dial your MBC to 10psi. It is fast enough right? Better getting 300miles to a tank being a tiny bit slower then a wrx and waiting for Mike at revtronix to get back instead of slow slow with shitty fuel economy. PLUS you are washing down your oil with fuel so it is all just bad.
Re: Engine Management
Posted: Fri Mar 05, 2010 3:09 am
by 93forestpearl
PP6 or Maf T Pro. You would need a wideband though.
Re: Engine Management
Posted: Fri Mar 05, 2010 5:00 am
by MikeyMeyagi
damn i was just about to order the revtronix chip now that my trans wont explode....
Re: Engine Management
Posted: Fri Mar 05, 2010 9:42 pm
by desmo750
Florin1 wrote:but i wanna go fast... Faster than a wrx at least! Shouldn't our cars be faster than a wrx since we have 2.2L vs 2.0. And not sure if my BCS is still there. I got the car with a MBC.
usdm wrx was only a 2.0 until 05, 06-10 wrx is a 2.5
Re: Engine Management
Posted: Sat Mar 06, 2010 7:35 am
by Florin1
Man but swaping the injectors was such a PITA. haha
Re: Engine Management
Posted: Sat Mar 06, 2010 7:42 am
by ericem
Florin1 wrote:Man but swaping the injectors was such a PITA. haha
What? No way man there super easy, just like on the first injector stand back a bit while it sprays fuel haha! I didn't realize even after unplugging the fuel pump while running there would still be pressure. Let's just say alot of fuel was on my face
I bought this seafoam stuff in a spraycan and I coat down the whole injector in it so it slides in nice and easy and cleans the injector.
Re: Engine Management
Posted: Sat Mar 06, 2010 7:50 am
by Florin1
Cool, Well than i will have to do it. I just remember it being hard to get to the screws on the firewall side. (i pulled injector w/ rail when i did it)
Re: Engine Management
Posted: Tue Mar 09, 2010 7:24 am
by Florin1
swapped my stock injectors back in. Car seems to run just as crappy. Does the ECU need to relearn?
Re: Engine Management
Posted: Thu Mar 11, 2010 2:24 am
by Florin1
?? It now dies after i come to a stop. And then i fire it up again, and it just idles all sorts of funny. Very low. Should i reset my ECU?
Re: Engine Management
Posted: Thu Mar 11, 2010 4:07 am
by ericem
Yes, unplug the battery for 40mins or so. Are you sure all gaskets were on the original injectors? Why did you remove the rail btw :S I just use a long GOOD philips head screw driver. On the driver side removed the washer fluid tank 2 bolts and I put the tank on the shock tower. On the passenger side remove airbox and silencer box.
Re: Engine Management
Posted: Thu Mar 11, 2010 8:15 am
by Florin1
i removed rails because they have n/a rails w/ 550 injectors. My old turbo rails have my stock turbo injectors. So resetting the ECU is as easy as disconnecting the battery?? I thought it was more involved, like warming up the car, than connecting a one wire plug, than drive over 7mph for 1 minute than disconnect. Something like that... Can anybody else confirm?
Re: Engine Management
Posted: Thu Mar 11, 2010 9:37 am
by BSOD2600
Even the FSM states unplugging the battery isn't a good way to reset the ECU. You really need to follow the standard ECU reset procedures with the connectors under the dash... or use RevScan. Basically you need to jumpstart the re-learning of the fuel trim tables.
I also replaced those evil fuel cap screws with bolts. No more stripped screw heads!
Re: Engine Management
Posted: Thu Mar 11, 2010 11:18 pm
by Florin1
and where might i get these procedures?

Re: Engine Management
Posted: Thu Mar 11, 2010 11:56 pm
by SLODRIVE
$500 will buy you an AEM F/IC piggyback computer and a wideband. It isn't exactly Autronics, but you can run whatever injectors and MAF you want, and have a reasonable amount of control over your fuel and ignition system. I use it in my EJ20H-swapped SS and it works great, check my build thread.
Re: Engine Management
Posted: Fri Mar 12, 2010 1:38 am
by BSOD2600
Florin1 wrote:and where might i get these procedures?

The FSM that Legacy777 has posted

I'd also recommend getting the parts manual. another reading
http://legacycentral.org/library/literature/codes.htm
Revscan works on cars w/o the chip installed too. just need the cable (revscan or evoscan cable are the same).
Re: Engine Management
Posted: Sun Mar 14, 2010 7:17 pm
by cj91legss
What kind of engine management or piggyback would you guys recommend for an amature? i'd really like to be able to do all this stuff without having to pay someone else....... i'm very happy knowing im literally the only one that has worked on my car since i got it.
Re: Engine Management
Posted: Tue Mar 16, 2010 8:25 pm
by Florin1
so i was trying to reset my ECU and this is what i found.

But i could not find a black connector on the left side of the steering column. I found one on the right however. It Had black/red single wires. Is this it?

Re: Engine Management
Posted: Wed Mar 17, 2010 6:25 am
by BSOD2600
Yup, looks like the ones. Yea, the connectors moved around depending on the years.
Re: Engine Management
Posted: Wed Mar 17, 2010 7:09 am
by Florin1
Sweet. Gratsi
Re: Engine Management
Posted: Tue Mar 30, 2010 4:55 am
by 92legacyss
I was just on revtronix website and it appears they are still up and running for whats its worth .