I have just put in the drop in K&N and I have noticed a slight bit of hp, not a "holy **** dude, my head is imprinted in your seat". Just a small difference.



Anyways, I am having some backfires happen, which is fine, cause it sounds cool, it is so small and cute, it sounds tough. Oxymoron right there. I only have experienced backfires from dropping the clutch at 7k rpm then shifting, and that was very noticeable.



My only question is, is this bad for the engine, or is it just cleaning out all the carbon and **** from the engine. The air filter I had in there was horrible, completely black, and not even useable.



60 bucks well spent, and it is running alot cooler now too. https://www.nopistons.com/forums/pub...IR#>/smile.png

backfire is cool

it's actually good..... it means you're not running lean. And like what stupid said....back fires are cool

LOL. Thanks guys. Appreciated.

lol. i guess someone is not gonna get to drive the new and improved fiksed rx7...



oing from FB to FD, i miss the back fires the most. when girls ask about my FB, they always tell me that the back fires were cool. https://www.nopistons.com/forums/pub...#>/biggrin.png

You don't have backfires from the FD treceb? FD backfires are bad as fawk, and especially when you get some flaming action going on.

The only thing its bad for is mufflers.

lol... after i realized what i said, it was too late to edit it..... i guess i'll just have try to find a way

back fire is cool, buttttttt there is a BUT. kills the muffler, well no so bad, and it means ur carb is dropping to much gas in the engine u need a deep sunk dish(thats not the name someone help me out) from racing beat

i dont think so. it sounds like there might be some, but its definately not like my FB. those were bright and long...i did notice that as soon as i let off the gas, the injectors are at 0%, so that might be why.