More FI fun, LM2 is smarter than me..... Options

[OU8AVW]

So I'm still finding f-ups cause by the well respected Porsche shop here in Annapolis.

1- I pulled the valve covers off the check the adjustment. They had not adjusted the valves like I asked. They were WAY off. Jake say zero lash for my cam. They were very loose. Looking at my gaskets, they were not even checked....

2- I installed a fuel pressure gauge in the engine compartment. Fired up the car and the gauge read 40psi!!!!!! 40 f--kin' PSI

So I adjusted the valves to .001" just so I could check them with a feeler. What do you know, the car ran better and it cured the high RMP lag I was feeling above 4500 rpm.
Then I dropped the fuel pressure to 30psi. Now it idled much better and had ALLOT more pick up. Smooth power delivery up to mid throttle.

At full-ish throttle it seemed to pop or misfire. I expect that it is running lean. Makes sense when you consider the asshat tuned the MPS with massive vacuum leaks and 40psi of fuel pressure so.......

I go to hook up my brand new LM2 to do the calibration and the stupid thing won't calibrate. (IMG:style_emoticons/default/headbang.gif) I spent more time trying to figure this issue out then I did messing with the actual car. I guess I need to call Innovate tomorrow and see what they say.....

[BeatNavy]

Mike, I went through similar symptoms a few weeks ago. Found on hard decel the engine wanted to stall out. I doubt the decel valve is related to your issues. More likely it's the lean running condition. Running lean seems to cause a host of potential issues.

Idle mixture is controlled by the ECU knob. You can adjust that separately from MPS adjustments.

I would fully warm up the car then take several runs on the same section of road (maybe a hill), and loosen only the inner screw on the MPS a little at a time (maybe 1/8th of a turn.) Record the results and do it again. Keep track of what you did each time as well as cumulatively (I printed out a table to record what I adjusted and took my son along to help me record results).

FWIW, I referenced the following two threads quite a bit, including the latter which I believe you originally had on one of your previous troubleshooting threads. It helped me, particularly with how to handle the outer screw:

Anders MPS
Greenwood MPS Adjustment

In the end I was surprised how much I had to adjust the MPS to get a sufficiently rich mixture after it was bench set "correctly." Racer Chris said as much, and I finally followed his advice (and that in the Greenwood thread above). I'm a newbie at this, but that helped me a lot. Good luck. You'll figure it out (and there will be no reason whatsoever to take it to one of those shops).