ohboiya

iTrader: (3)

Does it really make THAT much of a difference? Is it worth the extra $$$?

Gotrice4

that depends... r u goin for show(for the sound) or actual go.. if its the latter then i'd spend the cash for mandrel bent tubing if your really into performance, but if your into the sound then just go to midas

JULIAN

iTrader: (3)

On normally aspirated cars it does not make a big difference. Heck maybe even on forced induction is doesn't either. Example on my 1991 300Z Twin Turbo I got rid of the mufflers and had a local muffler shop crimp bend me pipes to replace the stock mufflers, I dynoed my car and at stage 2, I was making over 285 RWHP and 285 rwtq. Some people could not believe how quiet it was without the mufflers (because turbo cars do not really need mufflers) Also some people with some expensive exhaust could not believe that it made so much HP for the $125 I payed the shop to do. Now remind you that it is not as pretty and does not sound as well as the $1200 exhaust some of the other people had but it served its purpose and that was to free up HP for me.

ohboiya

iTrader: (3)

Hey Gotrice4,

I can understand that crimp vs mandrel will make a huge diff in sound ... but it makes that much diff in performance as well?

got rice?

iTrader: (2)

crimp bend will probably do more harm than good. all of the inaccuracies, bumps, bends, kinks, etc. are a restriction in the flow ALONG with causing the exhaust flow to be turbulent. There are two purposes of an aftermarket exhaust - larger diamater and smoother piping. The combo of these two will increase exhaust velocity without screwing up the scavenging effects at the exhaust valves. When the exhaust flow becomes turbulent, you may actually decrease the exhaust velocity..