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**asshanson** · 11-10-2009

Is the IAC blocked off along with the FIAV? That blockoff plate could have something to do with the idle if there is a leak. Either that or ECU problems could cause the IAC to not function correctly. Are you sure there are no boost leaks?

Before you diagnose issues you need to check base timing and a full boost leak test. My car ran like crap until I realized my base timing was 10* after top dead center, 15* behind normal. Fuel system pressure test probably isn't necessary unless you are leaking gas.

*edit* What is the keydiver chip adjusting for fuel? You would need to adjust fuel by about -19%

11-10-2009	#2
asshanson immune from paybans Join Date: Oct 2005 Location: West Des Moines Drives: poorly Posts: 4,358	Re: 1G Trouble shoot assistance needed Is the IAC blocked off along with the FIAV? That blockoff plate could have something to do with the idle if there is a leak. Either that or ECU problems could cause the IAC to not function correctly. Are you sure there are no boost leaks? Before you diagnose issues you need to check base timing and a full boost leak test. My car ran like crap until I realized my base timing was 10* after top dead center, 15* behind normal. Fuel system pressure test probably isn't necessary unless you are leaking gas. edit What is the keydiver chip adjusting for fuel? You would need to adjust fuel by about -19% Last edited by asshanson; 11-10-2009 at 12:38 AM..