changing intake
03-21-2013, 09:43 PM
#1
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changing intake I currently have a 383 with an LS6 intake and stock TB making 471/467. I am picking up a used, slightly ported FAST 90mm intake paired with a NW TB. will i need a new tune making this change?
03-22-2013, 02:39 PM
#4
It may also idle odd or start hard as well. It just depends on the current tune and the ability of the computer to adjust the IAC. I would put it all on and if you have a scanner that reads IAC position, try to get the IAC position to 40-60 at hot idle by adjusting the TB blade screw. That will help it idle better, start better, and it may also help your tuner.