what could be causing my crx with b16 to backfire when shifting gears any suggestions

 

is your ecu chipped? if not, maybe bad 02?

 

when a car is runnin rich it backfires because extra fuel getin into the exhaust an from the exhaust being so hot it ignites the fuel causin a backfire
check ur fuel pressure n wat injectors are u using

 

the motor is pretty much stock with skunk2 stage 1 cams, intake and exhaust. problem started when I swapped the header for stock manifold and the stock p30 ecu

 

ur ecu is not throwin any codes is it?

 

nope not throwing any codes

 

how about when u swaped in the aftermarket cams.. did u time it correct? check the timing maybe its off by a tooth. loosen up ur dizzy retard it or set it ahead. i had a similar problem on my h22 when i shift thru gears around 4 to 5k rpm it backfired like crazy, found out it was one of the valves, but that might not be ur case

 

wat u mean one ur valves?
explain

 

backfiring is tight, quit whining!

 

check your dizzy timing, you might be running rich also, and if i were you i would get some cam gears and degree them could be that too

 

i meant to say i had bent valves

 

cool thanx for the info i'll check the timing