+1 I agree with johnv
( if your FPR is un-referenced then rail pressure should stay static +/-1 psi )
( if your FPR is manifold-referenced then rail pressure varies with MAP, which in your log AD1 has no correlation to MAP )
i am disapointed that the lingenfelter pump drops off so much. i will probably get the racetronix harness. but fp drops in a consistent maner so it should not be causing what im experiencing.
btw, there probably is no way to logg the pump voltage from the pcm, right? am asking because of b4002. gm.volts is the battery voltage, right? but then this table doesnt make any sence.
Plug gaps ?
Also not sure on the 98's but that throttle position pid doesn't look right for ETC. You will need to log the actual throttle blade position to see if an ETC torque limit is in play.
The Tremor at AIR
good idea on the throttle blade. but what pid do i logg? gm.tp? sae.tp-b/c? gm.etctp1/2?
how can you get some info on the pids? when i rightclick "more info" doesnt work.
Last edited by dian; October 22nd, 2015 at 03:30 AM.
Like I said I have no experience with the 98 pcm. It should be obvious though if you connect to the vehicle, validate the pids and test. ETCTP I would say is what you need.
The Tremor at AIR
thanks. it a 99 btw.
i put in the smaller restrictor and made two passes on the resized tune, one to 6200. no problems (except mixture being on the rich side). 155 map, 14.5 ibpw. so at least i know i havent killed the engine yet.
so original restrictor goes back in, but its rainning so further experiments have to wait.
ibpw was at 14.5 (4950) and 15.1 (5300) when engine would bog before. i have been up to 17.5 without restrictor at 5200.
btw, could someone have a look at my dashboad C? how do i format that properly. resize to dashboard does nothing. its too wide.
Last edited by dian; October 22nd, 2015 at 09:41 PM.