So i boosted my 06 coupe with a turbonetics kit. it was running fine till about 2 days ago. first started out with hard starts then just died will driving. couldnt get it to start so i pulled the code and found out my throttle body commited suicide. changed that and now it still has hard start and idles real ruff. i have a wideband and it reads full lean but when i plug in my uprev cable the sensors read mid 14s. i had a hard time starting the car so i pulled and changed the plugs and did a compression test. all cylinders read about 170psi. still idles at 1100 rpms and occasionally pops like its missfiring or shooting to much fuel. i checked all lines and everything and cant find anything. i also got a p0507 code. if the idle drops bellow 1100 rpms it runs crappy like its not getting fuel. im running out of ideas so any help will be great. car is untuned cause of these issues.

 

stock MAF?

 

yes stock maf

 

fueling/injector problem? what size injectors/fuel pump are you running?

 

im runnin 440cc from the kit and a wahlbro fp.

 

did you alter or replace the Fuel pressure regulator?

and is there any tuning at all on the car or stock ECU?

 

i did not alter or replace the fpr. thats still stock. car was tuned with uprev. talked to my tuner and he said it will be ok to drive since it will correct the a/f but gotta drive like a grandma. car ran fine till the tb went and now hasnt ran good at all

 

im not sure about the TB causing all this but the FPR is a MUST! its like trying to blow up a raft thru a straw. your car needs much more fuel than the stock FPR allows.

and mid 14's in boost for AFR is too high IMO. i think youd be better off in the 12's... im also assuming thats in boost...

 

i know im gonna get thrashed for this but i have ran the car for more then a month and no issues until now. if it was the fpr wouldnt it have gone right after the kit install?

 

it could take a day or a year...it all depends. if you drive like a granny it will prob last longer and V.v.

i think you need to replace your FPR and make sure it can supply enough fuel to the system. or replace stock and do the mod that turbonetics recommends.

YOU NEED TO GET IT TUNED TOO!

thats just asking to grenade the motor.

 

im not trackin the tn mod and its hard to get a tune when i cant make a 300 mile trip when the car is actin up.

 

i did the tn mod and car still runs with high idle and every few seconds seems like it looses fuel. got a new maf conin in so i hope that works

 

When you replaced the fuel pump did you replace the o ring that seals that gap the fuel pump hangs from?

I had very similar issues with mine because it was leaking and causing horrible missfires like that. The car would start smelling really gassy in the cabin... And the fuel pump whines like crazy while trying to generate pressure. Sound familiar? It took about 400 miles of driving before it happened.

On another note- I'm going to pass on to you what some smart men passed on to me: don't skimp on your fuel system.

 

never had the gassy smell. that o rimg still sealed it up

 

changed maf and it got a bit better but still havin idle issues