Deatschwerks 550 Injectors
NGK Iridium Heat range 7
ASHSpec NA-TT ECU
I have a slight backfire when I rev the car in neutral @3000 rpm. It's not overly loud like a shot but more of a pop. It also does it after shifts as well.
I originally thought it was a spark plug issue as I had incorrectly bought stock plugs vs the Iridium heat range 7. The stock plugs were replaced with the correct ones and I noticed when I took the first set out banks 3 and 5 were burning hotter than the others.
My car idles perfectly, and even when I drive it doesn't hesitate or stumble. I haven't got the opportunity to run codes yet . I've tightened down all exhaust components and I'm pretty sure I don't have any boost leaks. I've read people having issues with ash's ecus, but I don't want to jump the gun cause my issue is not as severe as others.
Has anyone seen this? Thanks
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