Car takes a few extra cranks to get started

[Silver50Pony]

Seems like cold starts even on 93 octane take a few extra cranks to get started now a days , I switch back and forth from 93 to e85 with the flex fuel tune from Lund. Even on warm starts it seems like the starter cranks too much on 93 octane as well. I was thinking for a little while it probably was just the e85. Has anyone swapped fuel filters maybe that's the issue? Or maybe I should change spark plugs? I only have 7k miles on the car. Also does it hurt to throw a jms fuel pump booster on my car even though it's NA? Maybe that will help especially for e85 starts. I'm running a gt350 manifold and TB with 47 lb injectors and PMAS cold air with a catback.

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[V8EATR]

You can't change the fuel filter and even if you could that wouldn't matter, neither would the plugs. Its normal with the FF tune, mine does the same thing sometimes. There is nothing mechanically you can do to make it better.

 

[NightmareMoon]

Yeah sounds like a tune issue.

 

[Silver50Pony]

I don't remember it doing this beforehand with the same tune though so I don't get it

 

[EFI]

Have you verified fuel pressure is kept/built to the rails before starting the car?

If you say it hasn't happened before with the same tune, odds are the tune is fine. However if you lose fuel pressure while the car sits and/or the fuel pressure does not build up quick enough after key on then it would definitely take a few cranks before starting.

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