I have read several posts about people stalling after installing a kit due to a leak. My car will turnover and starts ok but then it idles rough and stalls. It worked fine for a day and a half. Even if i try to give it gas it will still stall out. Boost gage reads about 20 or a little more vacuum at throttle.
I am running TN kit, AAM fuel return, RC440 injectors, plenum spacer, JIC ti exhaust, and i havent reflashed ECU, but i am running Greddy EU.
Right now i am just running a base with the EU, and it is getting tuned on wed (i only drive at a vacuum, no boost until tuned). My installer is coming to look at it tomorrow, I am just curious as to what else it could be other than a vacuum leak. I was thinking maybe the ECU trying to compensate, or possibly something wrong with the fuel return system.
andy

 

Im sure when you get it tuned it will go back to normal. Could the problem be the fuel return?

 

Whats your vacuum at idle?

 

Vacuum at idle is about 20in. I think it might be a little bit more vacuum (25in) but i cant be positive without looking at the gage

 

Damn bro sorry to hear, any CEL? If you don't have any then hopefully it's just a tune issue and will be resolved soon. BTW my car is at Sonic getting tweaked.

 

yeah, it blows, seth said he would check it out tomorrow. He said he saw this problem wiht the black Z that is there with him now and it had to do with the fuel return. No smoke from teh turbo though, so that is good, but i still cant break out of the vacuum and into the boost yet

 

So you are running what map on the EU? Wit 440s in the car your really need t get your fuel map looked at.

 

my installer programmed the EU for 440s

 

just got home from work and tried to start it, when it fires up vacuum goes to 20in of vacuum, and then slowly goes towards 0 and it is sputtering and then stalls. I think this is indication of a vacuum leak

 

A vacuum leak is high pitched and loud.

 

scratch that...lol calling seth in a few

 

Do you have a wideband AFR gauge installed?

 

Or gas spitting out the exuast.

 

yeah wideband is installed, runs about 14-15 at throttle

 

that happened to me when my fuel return line was hooked up backwards lol

 

omg, like wow

 

Sounds like a vacuum leak to me.

 

you have no idea...that's not even where it begins...

 

Well my Z has been on sleep mode since december so I might be able to slightly understand.