05 YB M6 with SLP 402 L92's Extened Crank Occasionally

[RomansDesigns]

his is starting to get on my nerves, runs perfect EXCEPT occasionally it has an extended crank and won't start without giving it some gas. The datalog on a good start shows the throttle at 26%, goes quickly to 11% then25% 22% good idle, when it doesn't start it gets a reduced power after struggling a bit. TPS starts at 26% goes to 11% stays there and it will crank, load up, not start until the throttle is depressed. Attached are two scans, HPL 115 is a no start, log 115a is a good start. Once is starts, you can shut if off and restart it and it's fine. Let it sit for a few minutes and it might or might not start. Fuel trims are excellent, it dyno'd at 490 rwhp on a 95 degree day. I have done the turning off of the P0121,p0101 and P106, done the maf and tc updates. I've tuned a TON of these and never had a problem like this. I think its the TAC system... Any help is appreciated! Mark

[RomansDesigns]

Hi Guys: Try a different heading. The ETC I think might be the issue on this car. Mark

[RomansDesigns]

Changed the Idle, idle airflow effective area failure settings. No longer goes into reduced power. Starts right up! EVERYTIME!