a properly tuned length extractor does not compress the exhuast gas from 4 pipes into 1 pipe... the length of primary and secondary pipes are tuned so that the exhaust gas pulse can travel one by one into the pipes according to ur engine firing order...
yo guys..
just wanna ask something..
my mr2 na 3sge jerking?/misfire?/knocking? at 2nd and 3rd gear in range 1.2-1.3rpm..
suspected worn out timing belt teeth,been asking around and somebody's suspecting the same...