bdis3

iTrader: (3)

I'm pretty sure youre gonna want a re-tune after the swap anyway because you will be able to put more power down without worrying about the trans crapping on you. So, whatever show your gonna get tuned at, just tow it there and see what they have to say.

tcchris38

Bump still looking for opinons

tcchris38

off too ptunning october 9th to get this figured out plus a retune!! Cant wait for the finished product

tcchris38

Well after messing with the car a bit. I got it to run ok. I took the FIC out of the car and since the stock injectors were to lean I threw the 550's in with the stock computer. The car idels better and idel's at 12.8-13.3. The car is now a little drivalbe.
But when im ideling and bump the gas a little bit the car starts to stumble and load up.
But as soon as I pluged the FIC in the car would barely idel and the wideband would not really jump over 10.
Does this problem point to anything inparticular?

SoFloTC

iTrader: (3)

tune?

tcchris38

Thats what I am thinking but I jsut dont understand why it wont run correctly with the stock ECU and injectors.

aen

check maf sensor, you said o2 sensor is okay so check your maf...sounds like you have a vac leak, the transmission isn't connected to any vac lines so check soemthing else.

also reset the ecu, this is a learning ecu

aen

with aftermarket injectors and the stock ecu my car ran super rich and died everywhere, when you had hte f/ic plugged in i bet the tune was rich so it died.

and the reason it was lean on stock ecu and stock injectors is a vac leak

think about it.

stock ecu stock injectors - lean - vac leak
550 injectors stock ecu - richer but not stoichiometric - vac leak with 550 injectors
f/ic + stock inejctors - rich - tune
f/ic + 550's - rich -tune

tcchris38

Ok aen thanks for the info!
I will go ahead and check all of my vaccume lines. Also how would you check/clean the maf??

cobaltbravo

chris, i just figured out what the problem is! you're in jersey! the air in jersey is aweful! trailer it down to dover and it should run fine here. it needs country air.

tcchris38

LOL ya I wish that the problem was only that easy to fix!! Ill swing down there soon enough

aen

you are turboed right? have you run this car turbo beore the swap?

easiest way? plug a dmm test probe into the wires and see if it develops voltage when you hit the throttle

or find a working one and see if it helps

again, this is all theory it's hard to diag over net

tcchris38

Yes the car is turbod and the car ran fine before the swap.
Thanks for the info ill try checking out the maf.
Ya I know its kinda hard to diag over the computer