is their anyone one in the gta that is good at fixing these cars? i can't figure this out at all and its driving me nuts... so for the longest time when i had the factory boost controller hooked up, it would boost around 25psi and then id get fuel cut.. so i knew their was a problem. so i just ran a vac line from the waste gate to the throttle body and i now only get 9-10 psi.. and it runs like really ruff. like REALLY ruff sometimes it will idle around 1000 rpm and other times around 5-600 with backfire, and other times i get idle surge.. i rev it up and i get nothing but black smoke (fuel i know) i grounded the 2 pins to adjust the idle and it just never works, i love this car, but i want it to run good i bought a j pipe and theirs no boost source. so i was told to run it off the throttle body, so i did and it just has never ran good even when i bought it.. it sat for 4 years but still fired first crank.. im at the end of my patience with this and im very lost.. can anyone help? its a 92 talon tsi awd and it has a evo 3 engine big 16G turbo and all ive done was put a non turbo throttle body on and front mount on. but the jpipe i bought didn't have the boost source.. so what do i do?

Buy dsmap, or link and a wideband and log?

JDM motor? Maybe you have the bigger 510cc injectors in there. If it's the stock ECU for the car you'll need to change something. One way is to install a 2G MAFS which flows more and cancels out the difference from the injectors.

Have you done a boost leak test?

If you drive down to etobicoke, I can help you out with this.

First, post a picture of your ecu ( I would like to see the part number on the front cover)

Also, post a picture of your injectors ( 510cc are yellow, stock should be blue or black)

i can post a pic tmw i can assure you the injectors are blue and i plan on doing a boostleak test tmw aswell, vac pressure reads around 16-18psi and like i said im only running 9-10psi of boost but still runs like crap but i got 170kms on a quarter tank of hwy today.. if that helps at all lol

spunds like your ecu wasnt telling your stock boost solinoid to control the boost, allowing it to keep boosting till you hit fuel cut. 25psi on a stock system is not healthy. when you hooked up the vac line streight to the wastegate .. it opened when it was sappost to. i think you hurt something when running 25psi .. or your fuel filter or pump needs replacing.

its been like that since i got it.. the guy i bought it from said it was modded before he bought it.. like it had the rewire for the fuel pump but was switched back to factory but i think it might have had a walbro and they changed it back to stock? the bolts weren't tight on the sending unit so it was leaking and still is, so im gonna try and get a gasket from ziggy and try that and if it still leaks im lost haha. but im also gonna pull out the ecu later on and check it out for caps leaking, i just wish i knew someone that lived closer to hamilton that could help me out with this thing..

Maybe it has a Walboro 255 high pressure and is overunning the stock fuel pressure regulator?

don't lose hope john, the board is here for reasons such as yours.

if you can get your car to stephen's place, i'd say do that...or whoever is close to you. sounds like you need someone with some dsm experiance to help you out.

I would love to help out but after seeing your post, I don't even want to read it. It hurts my eyes. However, I do hope you get the problem fixed, so good luck with whatever it is! I hope its nothing major man....

what ziggy said makes alot of sence.. i haven't had the time yet to pull the pump out to see and i forget the numbers ziggy.. was it 243? for the walbro

i'd just check his webstore or google for a quick answer..

not saying ziggy is slow to respond, just sayin..

If it is a Walboro, the HIGH pressure would be 341 or 342. 255 REGULAR pressure would be 315 or 317, and a 190 would be 250 or 278. They ALL begin with GSS

Wish I could help, this guy has helped me out enough times in the past so hopefully someone can help him, Also I have a fwd turbo that he could borrow parts from to try and fault find the problem.

k so i pulled out the ecu numbers on the front are MD166262 E2T36578 and on the side it says 6262.. i also took the cover off to see if its socketed or if any of the caps were leaking and i found one of them leaked don't know if thats my problem or not

Definitely is. As soon as the caps start leaking it will do funny things. Your options are: 1 Find a new ecu to replace that one 2 take it to a computer shop so they can replace the caps and clean the board (or do it yourself)

im still thinking its your fuel system ..pump..filter.. or regylator. it may not be healthy enough to give you enough fuel for 6000rpm. ive had bad caps before.. the car just wouldnt stay running.

I think you got it. Bad caps can have alot more then just 1 symptom. Depending on what the acid damaged or which cap it is.
The only way to know forsure is to pinout the ECM and see what valves are incorrect. I would recommend ECMlink for repair.I have had a local guy do some work but never again. It takes a bit longer but since it there you might aswell get it socketed and buy Link.

LOL Bill goes from being well under 100 to well over 500

The 1g ECU seems to be more forgiving than the 2g ECU. I have heard lots of horror stories about ECU repairs being botched, but they are almost always 2g. If you know anyone who can do the work, the caps themselves are cheap. A 2g ECU I would agree 100% I would not let anyone except ECM Tuning touch, and if you ARE buying DSM Link, then again, I would get them to repair the ECU...Otherwise, I think I would get a local electronics shop to do it.

or borrow someone elses ecu and test it to see if its the problem. then if its not the problem .. you didnt just drop 700 into our car and still not work. but i wouldnt think twice about criusing the dsmtuners clasifieds for an used link setup or dsmap set up.

Maybe the monkeys In KW just suck. I am not only talking about DSM ecm's.

I have a md166262 sitting around you can try if you can't find someone local

That would be nice just so i know if its pooched or not but ill post a pic of it when i get home

ok so update... fixed the ecu, checked voltage on the tps and it read 0.65v so we adjusted it to 0.50v and grounded the biss and adjusted that so it idled at 800rpm.. was fine till i shut it off and left again to find that the idle still slowly creeps to 1000rpm from the 800 we set it to... very weird and only does it every now and then.. and whoever had this car before me.. id kick you.. pulled out the fuel pump to change the gasket, well needess to say that instead of putting a used complete sending unit they took the factory pump and put a piece of tube that they cut out and braised it back together... what a mess.. and the pump is wired direct using speaker wire fml.. so im gonna have to redo all the wiring for that aswell.. i haven't been on lately due to work and i haven't been home. but changing the caps and the adjustments have made it run alot smoother..

Hey man! That's great news! Glad you're making head way on this. Sounds like you're not burning a hole in your pocket getting this done either.