? On Apexi exhaust.
? On Apexi exhaust.
Im considering switching my helix tb set up to a QTP downpipe and Apexi Ps revolution catpipe with a high flow cat, for my new hta35 kit. has anyone tried or is running this catback? If so how well does this active silencer work for regular stop and go traffic at reducing the db's. If you all wanna know its cuz i live in cali nuff said.


