98 C5 Fast 90mm and LS2 TB
12-04-2006, 01:14 AM
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98 C5 Fast 90mm and LS2 TB I have some idle issues with a 98 C5 after a FAST 90mm and LS2 TB installtion. It starts up fine, and idles OK until its warm, once its warm it starts fine but the idle speed will flare on start up and often will die. It will stabilize but even then it will die if its put into drive. The cam is a small CC XFI 224/230 on a 114 LSA. I have a good idle when its stabilized, and good vacuum, there is just a slight lope otherwise the idle is pretty smooth. Anyone out there had a similar problem after a LS2 TB installation on a 98 C5 with a A4?
12-04-2006, 02:53 PM
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Originally Posted by tjwong
I have some idle issues with a 98 C5 after a FAST 90mm and LS2 TB installtion. It starts up fine, and idles OK until its warm, once its warm it starts fine but the idle speed will flare on start up and often will die. It will stabilize but even then it will die if its put into drive. The cam is a small CC XFI 224/230 on a 114 LSA. I have a good idle when its stabilized, and good vacuum, there is just a slight lope otherwise the idle is pretty smooth. Anyone out there had a similar problem after a LS2 TB installation on a 98 C5 with a A4?
12-04-2006, 07:32 PM
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Originally Posted by MSGHUFF
Try adjusting the throttle area conversion B4349 in EFI live stock is .0255 and with a 90mm TB it should be .0320 this is used to make calculations to the desired Throttle area on drive by wire cars. Worked well for me...
12-04-2006, 09:53 PM
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Originally Posted by tjwong
I found that one and I have made the correction. It did help considerably. But when you initially drop it in drive it will drive 6 out of 10 times. I am going to play with it a little more and see if I can help it out. Once it settles down it is fine and won't die. So far it made 415 to the wheels with a mild 224 cam which I am happy about.
