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Misfires at idle

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22 replies to this topic

#21
Cicio

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Cicio. Thanks for chiming in. Can you elaborate more?

Once fuel was added and rpm raised 50rpm it helped a ton. No more misfires codes but short-term fuel imbalance between bank1 and bank2 is around 8-10% difference (Bank 1 demanding more fuel)

Turning AC to ON also helps when there are misfires.

How do the stock fuel rails and FPR play into this?

Btw, all WOT runs are perfect across all measurements. Injector duties in the 80s

 

same question...how do factory rails/FPR affect bank balance?

 

 

There are a lot of factors as to why it  happens but it's a pretty consistent thing.  Nothing to worry about, let the fuel trims do their job at idle where the engine isn't using enough of the fuel ... it will literally never hurt anything whatsoever. 


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~N.Cicio

 

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Email: cicio@cicioperformance.com
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#22
wspy

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Kinda like "If it ain't broke......"  I guess  :ponder:


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#23
socalaviator

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There are a lot of factors as to why it  happens but it's a pretty consistent thing.  Nothing to worry about, let the fuel trims do their job at idle where the engine isn't using enough of the fuel ... it will literally never hurt anything whatsoever.


Thanks Cicio. The main reason I reached out for advice is because it just really annoys me. Lol

Constantly clearing the misfire codes was annoying although easy. And the car sometimes sounded like a "hooptie" at a stop light hahaha

The latest revision my tuner sent me was a HUGE improvement. No codes and very slight misfires now. It just needed a tiny bit more fuel to keep the trims from pegging at 120% on bank 1. Higher rpm helped also.
RD Engineering. HKS GT1000 build. 1100+WHP




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