Z0oMzo0m

iTrader: (4)

detonating.. i have done the throttle body bypass, changed the oil to 10w30. but when i start to get on it almost full throttle first second gear, i hear a pinging/rattling noise about 6,000rpm. it has been there since i bought the car, it was brand new when i got it. and yes i have always ran 93 octane from a good gas station, racetrack. no cheap &#$^ could this be possible?

Outkast187

Chances are its something else. Does it do it in nuetral?

Z0oMzo0m

iTrader: (4)

no it doesnt do it in neutral. it sounds fine there. it kinds sounds like the ignition sparking, i have the upgraded coils form mazsport. and i dont know if passanger side can be heard from.

Socket7

Try putting your coils back to stock and see if anything changes.

Z0oMzo0m

iTrader: (4)

it was doing this with the stock coils also... idk. i think its leaning out. but i guess the only way to find out is to get a tune, or COBB, a reflash wouldnt help from dealer you think? and i dont think they wil like the mods done to the car...

Razz1

It's your ports opening up.

swoope

iTrader: (5)

check heat shield on cat.

and how many miles on the car?

btw, i would run 87 amaco over 93 racetrack..

beers

Z0oMzo0m

iTrader: (4)

ok il check the heat sheild, that would make sense. its not really loud but its noticable. and "WHAT" is good gas?i have used diff. places, 7/11- flying J- racetrack- circleK- BP- and racetrack seems to make the car run smoother.