SJP0tato

iTrader: (7)

Hey guys, I've been running my Reverant MS2v3 for awhile now (8-9 months). I've gotten most everything tuned to my satisfaction except the warm-ish start after sitting heatsoaked for an hour or two that people report a lot of problems with.

Anything < 110 or so (cold), or > 180 (hot start after sitting for just a few minutes) works pretty well. Starts right up with no issues.

But anything between those ranges takes a long time to start (I can crank for 10-12 seconds, stop, then re-try for another 7-8 seconds before the engine finally "catches"). I've got my IAT placed on the cold side of my intercooler.

One thing I've noticed: When it's having trouble starting in this range, holding the gas pedal approx 40% throttle position seems to help it start right up in just a few cranks. I'm not sure if this means I need to add more fuel (cranking pulsewidth), or more air (PWM cranking duty)? I've tried playing with both, without much success/help to what I've already got.

I've attached what I think are relevant tables and my current tune, if anyone has any suggestions it'd be appreciated!

Savington

iTrader: (31)

Without a log, it looks and sounds like too much fuel.

WestfieldMX5

try to start with flood clear (ie, +70% tps in your settings). If it starts, too much fuel was given.

SJP0tato

iTrader: (7)

Thanks Westfield, I'll give that a shot. I wasn't sure if 50% throttle means more fuel AND air is introduced, or just more air.

I have my wideband hooked up to a power source that cuts during cranking, if I move it to a source that keeps power during cranking will it tell anything useful since the engine won't be firing?

Braineack

iTrader: (62)

Don't bother, even if you do this, typically the system drops below 9v during cranking and the unit will reset anyways and run warmup, so you wont get a good AFR read during cranking.

you inject based on the cranking pw% table, so if it starts better with more throttle, then you should reduce the PW at that CLT temp.