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Can't seem to get the car to idle

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Daniel1337

Probationary Member
6
0
May 27, 2007
Captain Cook, Hawaii
First off I have a 95 GSX with port/polish/3angle valve job on head.
FP green turbo, fic 950's, rewired walbro255, SSAC FMIC, home made piping (no boost leaks), tubular o2" housing, 3" exhaust, apexi n1, MBC, aeromotive afpr

Alright, here's my problem:

My car won't keep a steady idle at low RPM's

It will only idle steadilly at 2k RPM's and when it's revved it drops down below 2k and dies.

The wideband reads between 15.7 - 18 on idle, it moves around a lot.

I've tried increasing the values +30 on the fuel tables and it didn't seem to make a difference.

I thought it could be a fuel pressure issue, so I raised it up to around 50 PSI, and still nothing.

I checked if all the pistons are firing, and sure enough they were.

I wanna know, if my problem could be that my plugs and wires are all fouled up, because before we ran the car pig rich without a AFPR while doing runs.

It doesn't seem to burn the fuel at idle.

I just replaced the front o2, and it seemed to have helped some.

My dad thinks it could be the fuel filter doing this, but I'm not sure.

There is some logs if you are interested in my other thread located in "engine management" i can get.

Any questions please feel free to ask.

The car will not idle at low RPM's it just dies.

Thanks
 
Boost leaks, Check the biss screw and adjust the idle.

Is the bov vented?

Also using a safc to adjust 950 cc injectors is a no-no, Max you can use is 650.

Dont mess with the settings, you dont have a logger and it sounds like you dont know what you are doing. Have a dyno shop pro tune it.
 
Boost leaks, Check the biss screw and adjust the idle.

Is the bov vented?

Also using a safc to adjust 950 cc injectors is a no-no, Max you can use is 650.

Dont mess with the settings, you dont have a logger and it sounds like you dont know what you are doing. Have a dyno shop pro tune it.

No boost leaks, We messed with the biss screw and it didnt help much.

Yes, the BOV is vented, could that be the problem?
I don't think it would make a difference, if anything wouldn't that make it rich?

And I am tuning via DSMLink, not a safc.

There is no dyno's around where I live (Hawaii)

And I already set globals, and set all the other basic stuff.
 
Yes, venting could cause that. It would run rich when you let off the gas making it more likely to die, and depending on what type of BOV/CPV it could suck in air during idle making it run lean.

How did you test for boost leaks and do you have any pre o2 sensor exhaust leaks?
 
Yes, venting could cause that. It would run rich when you let off the gas making it more likely to die, and depending on what type of BOV/CPV it could suck in air during idle making it run lean.

How did you test for boost leaks and do you have any pre o2 sensor exhaust leaks?

Tested for boost leaks with a boost leak tester :p

I run a HKS Bov, I don't think thats the problem
 
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