Originally Posted by scoooby slayer

ive found the decat pipe on gtr owners and sam identical spec to me got black flagged drive by instantly, apparantly from 4k rpm and above they have little effect.

what about this jay

http://www.ebay.co.uk/itm/3-Universal-Db-Killer-Exhaust-Baffle-Bung-Fits-Jap-Style-Removable-/221006066002?pt=UK_CarsParts_Vehicles_CarParts_SM& hash=item3374fcf152

i could bolt that in my tail pipe just for track day with some wadding around it too ?