Just looking for a direction to going in
I have a hard cold start problem, after cam install, the cam is a touch smaller than a MS3(lift wise).
when doing a cold start I get brief fire than dies, then hit key again I get a longer cranking with brief fire(couple of cylinders). more cranking leads to me having to put my foot in the gas.
Now when I put foot on the throttle(30-40%), right away, is fires up but have to use the throttle for about the first 5-10 seconds, then idles on its own and continues to run rough until warmed up. Plus when I drive away when its still cold it will run rough until 2000rpms then cleans up.
Hot start is fine, wish it had more snap, but fires up then goes to idle rpm.
This condition gets way worse when temp drops down to 50*f or below. Stock cam had this condition,but was only very slight.
Tune drives great, idle great, little choppy around town.
I think couple bad injectors leaking down?
I did change spark plugs to tr55s...problem?
Plus get a alot of misfires(scanner wise) at idle to 2500rpm
And yes I running maf only(Dynamic air disabled)...problem???
PS I think I have fixed the idle surge when coasting as seen in my log. Have yet to flash this tune into the car.
Thanks