Short version: newly installed MsPnp2. Car ran for a week, took to Buttonwillow for track day made it for three sessions ran well then would not start for fourth session. I cannot see any lights on the MS come on with ignition key in on position. I know I am getting fuel as I bypassed the under dash relay with a jumper and can hear fuel pump working. Fairly confident MS is getting power as car has started with old ECU reinstalled for a bit then died. Likely getting way too much fuel due to new 720cc injectors installed. Laptop used for tune will no longer connect to MS in Tuner studio.

Long story: Just had MS installed a long with Electronic boost, AFR and IAT wired up and dynoed. Was down at Buttonwillow which was very hot. Ran three sessions car was running pretty well, coolant temp good 205 or so, oil temp a bit high at 250 ish. Parked car in our rented garage car was kind of loping at idle when I pulled in like it was hunting for correct AFR or something. Turned it off. Went back an hour or so later for next run and car would not start. Turned over, checked main engine relay all good. could not get to start trailered it home. This was my first outing with the MS installed. Got home replaced with old ecu and car started briefly. Wanted to check fuel pump and appears that is good. Anyway is my MS dead, could something have gone awry with the E boost, IAT or AFR connections that caused this? Been at this off and on for over a week and can't figure this out? MS2 was fully built unit PNP.

 

It was indeed dead, sent it into DIY and they fixed for $75 and sent back. They blamed a faulty alternator which could have been true as was having some wierd parastic voltage draw as well which turned out to be the alternator. So replaced. So far so good.

 

Glad you got it sorted. Thanks for the follow up.