i have a fd and here are the set up gt35, tial 44mm wastegate, tial blow off , 550cc primary and 1600cc secondary, down pipe, test pipe, pettit ecu, intercooler etc. the car runs but sputter at around 4000rpm and wouldn't boost . please help

 

sounds like a timing issue. Who tuned the car, or is it even tuned at all?

 

pettit ecu is for twins = untuned for single

 

Ahh read it so fast...

Yes.. you need to get a new ecu. I don't know jack for the pettit... but it's obviously not going to work with your setup in it's current position.

Go Haltech, Power FC, Motec, etc.

 

Your ecu is definitily the problem. I'm surprised your motor lasted using that ecu on a single turbo.

R.K.

 

thanks guys. but does anyone have a stock ecu i can barrow or how do you untune the pettit. i just want to know for sure that it's ecu problem. thanks again

 

Pettit is oem ecu with upgraded chip. check your wastegate. Do you even have a boost controler? You are lucky you can't go ver 4k rpm, otherwise BOOM!

 

If you try putting in a stock ECU, you mise well kiss your engine goodbye!

If you won't take our word for it, call Pettit. They'll cleary tell you what their ECU is tuned for, and that it's NOT for your setup. (561-844-2258)

There's no way to "untune," or "retune," the pettit. You don't have much of a choice but to go with a standalone. There's plenty of standalones to choose from. If money is an issue, look through the for sale section of the forum for a used one. You can usually find a good deal on one!

-Alex

 

Im amazed car has not blown up...you are one lucky guy...get a PFC as soon as you can

 

All i have to say is yikes !!!.....get a PFC or other stand-alone or take it to sombody that knows what they are doing.

 

naw, it's probably choking out when the secondaries come online. the 1600's are just dumping buckets of fuel in. but yea...ecu is to blame for this problem.

 

Or what you could do is just keep your ECU and you send me your turbo and I will send you my twins , 850's and you will be all set.

 

^^^ smart ***

 

if you're really poor, drop the secondaries down to 1200cc and grab a safc and just tune it for ~8-10psi. that'll be enough to have fun with until you can get a stand alone.

 

im not even going to post what i was going to say. ill keep my mouth shut

 

i love how everyone is jumpin' his **** for this...

we were all noobs once too. remember?

 

aren't we anymore?

 

i'm a noob

 

timing/fuel is def your prob. If that ecu isnt tuned then when the secondaries are coming online its dumping way to much fuel in, this is why you get the sputtering and no boost situation. Like everyone said, Ditch that ecu (prolly could sell it fast on the for sale forums), and get a PFC. You won't regret that decision.


-Jay

 

PFC, PFC, PFC...That's all I ever hear!! Get a Microtech!

-Alex

 

pfc is cool if you have twins, stock omp, and emissions.

otherwise just get a real ems.
**** microtech. they're a stripped down version of an ems.