i got my car tuned three different times changing different things, this is starting to be a expensive guessing game. i soildered my injetors in. they are 440cc. i got a walbro 255. still didnt fix problem. then i had custom dump tube made because the waste was dumbed into my downpipe to close to the turbo leading to much back pressure and cutting out. my car keeps cutting out around 4.8 rpm so he cant even finish my tune. what could be my problem this doesnt make sense to me.i hav a 08 boosted tc. manual. t3/t4 turbo

 

Do you have a lot of turbulence at your MAF?

 

got any photos of your set up? maybe you have something installed wrong. are you throwing any CEL's? how much boost are you running? we need more info too.

 

i am getting some pictures i am using my waste gate to regulate my boost. it is a 9 pound spring. and i got it tuned for 10. and my maf cant see boost it is on the intake side.

 

i cant put pictures on i can only send u one in my email.

 

also i dont have codes for anything except o2 sensor. witch i cant fix. p0037

 

You don't know how to load to Photobucket?

 

http://s1207.photobucket.com/albums/bb471/mdhutc/

 

replace that sensor that is your problem i bet. it's probably reaching a point and going in to limp mode. did you do the things chrus said in your old email?

 

what is my old email? and u think my maf sensor is bad? i tried using my girls maf sensor on her car and it still did the same thing.

 

hmm sounds like you damaged your harness. did you try chasing the wires to see if they are broken anywhere?

 

did u try a new set of plugs?

 

this thread is full of fail sorry


-why hasnt anyone asked what piggyback hes running
-the o2 sensor code is for the rear o2, thats not causing ish..
- the wastegate dump wouldnt cause it

ok so back to reality

OP what engine managment are you using, was it hardwaired or did you use a harness

also if you are using a aem fic try the resistor mod

 

Agreed with ^ sounds like resistor mod to me...

Sent From My Evo 4G

 

i don't think it's resistor mod i was thinking on this and i bet it's blow out from not gapping his plugs.

what spark plugs are you running?

 

I have Greddy ultimate it is a harness tapped into my ecu. I have one step colder iridium plug. The tuners shop gapped them for me. And I heard about a resistor mod but don't know if u can do it for my set up. Do u think it is because I have small injectors and pushing to much boost for them. I have 440cc and running ten pounds.

 

you don't need to do the resistor mod with the ultimate. you need to find out what gap they are at i bet they gapped them to far and when you hit full boost it's blowing out the spark.

 

10psi you should be about 33-28 i ran 32 and it ran like a champ.

 

Yes. It sounds like you may have other issues going on too but 440's are definitely too small for 10psi with a T3/T4. I'm running 440's with 6 psi and the inj's hit 90% IDC. Good luck.

 

Something tells me its plugs/gap. Pull your plugs, check the gap (post it), and post pics of the plugs.