Its really about air intake to air output ratios as well as the speed it does it at to create the combustion.
I've done it very few times in my Z but its usually while I am running 1 and a half to 2 gallons of my racing 120 octane fuel, and going through GMR downshifting real high to make the exhaust actually backfire.
I had blown stock catalyzers and the FI 18" res CF CBE at the time. Although the sound has been much more aggressive and the exhaust pop is a lot louder, since the install of my BERK HFCs I no longer get the backfire like I had.
I also have a pair of LTAI's no one ever gets nor really speaks of too. I think I had a rare setup with how blown my catalyzers were and the air intake I had paired with the exhaust might have been the reason for why I was able to backfire at times, although it is not normal for N/A to be backfiring. Mind you my backfiring I speak of was a couple flame pops at most.
Turbo'd setups are much better for acquiring major backfire
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Birdman's Build:
Powerhouse Amuse/ Nismo/ Eibach/ ACT/ Tommy Kaira/ Avant Garde/ Fast Intentions/ Project Kics/ Fly 1 Motorsports/ EVO-R/ Z1 Motorsports/ Weber Sports/ Zoom/ Zele Japan
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