sometimes when i m goo fast....there is like a fireworks type of sound coming out from the exhaust and the car starts boggingg.....my friend noticed the soundd....and than i heard it myself....does anyone know how that could happen or is that happened to anyone before?

 

the last i checked, when your car sounds like "fireworks" theres a problem

i honestly have no idea, too much fuel maybe causing bogging??

MAF could be screwed up to.....

goodluck.

 

i think it could be running real rich. do you have it tuned?

 

Too rich and you'll hear backfires from your tailpipe. Do you notice it mostly between shifts, or does this happen while under throttle?

 

Its got to be a rich spurt

 

RETUNE lol

 

if it sounds like a strait piped srt-4 then yea your running rich

 

it was bov...i put in a greddy bov now and everything is fine...thx 4 the help

 

oem bov was leaking that bad?? wow! I would check your plugs as well to make sure none are fouled from the running so rich.

My skylines all had DSM recirculatin valves on them from the factory, and all of them leaked terribly.

 

Cars f***ed......the good news is i'll buy your motor and you wont ever have to worry about it again......

 

Its either spark plugs or detonation.

Sounds like you might not have to worry about your car making anymore sounds soon.

 

You really should invest in an AFR gauge, specifically a wideband, that way you can sort of pin point whether or not your leaning out (det) or riching while you missfire.