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...
Hi All. Make a open discustion about tuning Haltech Platinum Series.
Give your feedback about this stuff.Post your photo together. DON'T ASKING ABOUT PRICE.Already NOTICE from All...