06 Vette, LS2, 440 CI, Auto, 500 RWHP, Fast 102, big cam, ported heads - Cold Idle

[RD in SD]

06 C6 A6 Engine Post Gary Runs good cold start needs help.ctd06 C6 A6 Engine Post Gary Runs good cold start needs help.ctd

As a test, remove the FAST manifold and return it to stock. Then see how it idles......

Also, post the tune file and some logs of the problem.

Simon.

Well removing the intake is quite a chore and not really practical since I have to put it right back on. Are you saying that because you feel it might have a vacuum leak?

Here is the file. I don't have the logs handy but I can tell you that when cold the car starts, flares, drops down to about 500 RPM, revs once or twice and then dies. On the second try it is a bit harder to start (cranks longer) but does the same basic thing. If I give it just a bit of throttle it will idle smooth at about 1200. If I let off it drops down, revs up once or twice then dies. I will log it and post logs tomorrow. Thank you for the help.

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