Quote:
Originally Posted by HondaDustR
There is nothing on the NA DME system that can detect pinging. Only on the turbos and the 16 valve motors (S, S2, 968). Is the throttle body and J-boot oily? This would mean a vacuum leak in the crankcase seals somewhere (AOS, dipstick, oil fill cap, rear balance shaft housing seals), that, in addition to being a vacuum leak, usually carries oil mist into the intake, which reduces the effective octane rating of the fuel. Otherwise, maybe it's clogged injectors, weak fuel pump, or some other vacuum leak. The AFM could also be dirty. Air Flow Meter (AFM) - from "The 944 Motronic DME" by FR Wilk ...or maybe you left something inside the motor and its rattling around whenever you give it gas.  |
I replaced the AOS seals though my intake was perfectly clean. Also, vacuum lines were replaced with the Lindsey kit. My idle is a little high (~1000RPM warm) but it was that way before any of this and I think it might just be misadjusted.
I was thinking of having the injectors sent out. Fuel pump is newer used (blue pump). But, I was thinking if it were a flow issue it wouldn't do it at lower RPMs in 5th gear -- it would do it at higher RPMs where horsepower is higher and fuel flow requirements would be higher.
With the FR Wilk chips there is a jumper so I might change that back to stock and see if it makes a difference.