I put in 460s and used the calculator on this forum to figure out cranking pw's, and the car starts but sometimes I get a pop from the exhaust or a hiss from under the hood. When this happens, the starter is obviously struggling to crank the engine, so I tried cutting back on pw's and now the car barely comes to life, still accompanied with a hiss. I'll post an msq later when Im on a computer but for now, does anyone know which direction I should be going with this? Everything else as far as fuel goes is fine, only cranking is giving me issues right now. I saw other people with 460s on here with considerably higher numbers, but my starter is struggling as it is, so I didn't want to try them. (I realize this is worthless without msq, but my numbers range from 5ms at 40ish to 3ms at 160.)

 

Are these RX7 460s? I've had this problem since installing my RX7 550s and i've tried every setting I can think of to change and pretty much come to the conclusion that the injectors are dribbling fuel into the intake somehow uncontrollably when I shut it down or during cranking that is causing some kind of misfire. Its been getting more violent over time and I haven't been changing any settings.

How often does it happen with you?

 

They are rx7 460s. Leaking injectors overnight does make sense...
It only happens sometimes, it seems really dependent on ambient temp in the morning when I start it, which is why I thought it might be cranking pws. It didn't happen this morning at like 50 degrees, and I cut .3 ms off all the pw's

 

Finally. Cranking settings attached.