ski_dwn_it
Member
- Joined
- May 3, 2005
ok guys...
Whats up. Car has a pretty big cam in it 715 lift ~270 on the duration. At idle in park or in drive it idles fine. Had the idle at about 1100 anything below that shakes the car pretty bad, there its fairly smooth. Well smooth at a big cammed car idles.
Now the problem is when I go from park to drive or reverse. The MAP values drop WAY down from high 60s into the high 80s and low 90s (lower left corner).
It "appears" that its going lean, but I have dumped a TON of fuel at this thing and it just gets worse....went the other direction with no salvation either.
It feels like the converter is too tight, one of those deals. But the converter is a race 8" converter with a 5k stall speed.
The car does it EVERY time I do it, regardless of closed loop or forced open. Spark has been set to high, lower and even played with the idle spark to try to save it that way.
Is it added AE from the TAU table with the large jump in MAP?
If I tap the gas or every so slightly give it a VERY VERY small amount of throttle, it drops in and will idle for hours without a problem.
All VE tables are right around 0 correction for idle. Tough to see what is happening at the time of dropping it in gear, since the car shuts off almost immediately if I do not intervein with some throttle, then it stays running.
Some questions;
(1) What do you want your IAC to be at in idle park? And drive? I know with the stock ECMs if you got the IAC too many counts it could cause some of these problems. Not sure on these setups....any advice.
(2) closed loop MAP setting in configure controls screen? Seems this does not work real well to activate and disable like the RPMS setting does.
I also played with the proportional and intergral gains since the manual says the intergral is what is is used for pulling the car into gear. It doesn't like it high, doesn't like it low nor in the middle. Same result.
Norbs, craig....any thoughts. Starting to think its just because of the little vacuum I have.
Target idle A/F is 13.6-14.0....exhaust is clear and clean smelling.
Thanks anyone that can offer some help.
Whats up. Car has a pretty big cam in it 715 lift ~270 on the duration. At idle in park or in drive it idles fine. Had the idle at about 1100 anything below that shakes the car pretty bad, there its fairly smooth. Well smooth at a big cammed car idles.
Now the problem is when I go from park to drive or reverse. The MAP values drop WAY down from high 60s into the high 80s and low 90s (lower left corner).
It "appears" that its going lean, but I have dumped a TON of fuel at this thing and it just gets worse....went the other direction with no salvation either.
It feels like the converter is too tight, one of those deals. But the converter is a race 8" converter with a 5k stall speed.
The car does it EVERY time I do it, regardless of closed loop or forced open. Spark has been set to high, lower and even played with the idle spark to try to save it that way.
Is it added AE from the TAU table with the large jump in MAP?
If I tap the gas or every so slightly give it a VERY VERY small amount of throttle, it drops in and will idle for hours without a problem.
All VE tables are right around 0 correction for idle. Tough to see what is happening at the time of dropping it in gear, since the car shuts off almost immediately if I do not intervein with some throttle, then it stays running.
Some questions;
(1) What do you want your IAC to be at in idle park? And drive? I know with the stock ECMs if you got the IAC too many counts it could cause some of these problems. Not sure on these setups....any advice.
(2) closed loop MAP setting in configure controls screen? Seems this does not work real well to activate and disable like the RPMS setting does.
I also played with the proportional and intergral gains since the manual says the intergral is what is is used for pulling the car into gear. It doesn't like it high, doesn't like it low nor in the middle. Same result.
Norbs, craig....any thoughts. Starting to think its just because of the little vacuum I have.
Target idle A/F is 13.6-14.0....exhaust is clear and clean smelling.
Thanks anyone that can offer some help.