Looking for some suggestions on some start issues.
Cold Start on e85 with low cranking compression. About 90psi on compression tester due to Cam-Piston etc. Positive Dispacement Supercharger and FBW.
I have played around with Various Cranking fuel amounts, timing, and mapping fuel. A ton of variables to try to figure out.
I can get the car to start to kick over and it will rumble along sometimes at 300-400 RPM but not really "take off" Other times it may start but immediately die.
The only thing, with some success, is holding the throttle open about 1/2 way and once it kicks off, run the engine at 3000-3500 RPMs with my foot & massaging it to life. Once it has 10-15 seconds running it can be settled down onto the idle throttle position. Not any really good way to replicate in software. Any ideas or approaches to develop ideas?
Re-start after stall. Takes forever if it gets stalled(I've done this a couple times spinning up the dyno). It floods. Is there a way to prevent the flood? Is there a way to fix it? I put WOT cranking fuel at zero in the last 2 cells of the TPS cranking fuel map. That maybe helps some. It generally takes multiple minutes to get a re-start, thankfully the car has 3 batteries!
Thanks for any ideas!