Start after heat soak

[thedrew]

Hey Guys,

2276cc with MS3X full sequential -- quick question.

When the engine is hot soaked....do I want to add fuel or take away more fuel on cranking? I have my cold starts down, but when its hot soaked, I have to tip the throttle a bit to get it going.

Thanks!

[Clonebug]

That's interesting.......I don't have anything special setup up for my hot starts.
I don't notice any hard starting at all.
Tipping the throttle means it needs a little more air.
Can you set your IAC to open for just 5 seconds on start???

[thedrew]

so do you keep your IAC at cranking the same level regardless of temp? I think I have mine open less as it gets warmer

[Piledriver]

I'd play with the cranking timing and cranking fuel first.

I'm not sure the iac setting on cranking is an individual setting...
MAP is usually ~90+ kpa on cranking anyway, fuel based on the first column of the ve table.

[Clonebug]

I don't have an IAC so I'm not familiar but I thought maybe it had that option.
New cars seem to idle up for just a few seconds and then drop right down.

What is your idle timing at??

I have run my idle timing from 8 degrees all the way to 15 plus and never noticed much difference.

Although, My engine doesn't like to idle much leaner than 12.8:1 even when warm.
That could mask a hot start issue if you are idling leaner.

[thedrew]

At 180+ degrees I have no enrichment whatsoever (Cranking, ASE, WUE)

You set the IAC valve opening during cranking by temp, I had it tapering down as it got hotter, I just changed it to stay open the same value at all temps, we'll see if that helps anything.

[thedrew]

that appeared to fix it......for my setup....keep the IAC open all the way at cranking regardless of temp.