Big single or std twin on VN 3.8?

dave653, Mar 29, 2:20pm
G'day you fullas. Family Calais feels like it needs more in the breathing out department. Has the std 2 1/4, with mandrel bends, no cat, my own extractors, M&H muffler with Mercury muffler out back. Just fitted stage 2 memcal. made a nice bit of difference! 3800 Performance website doesn't tell me much, only thier aftermarket systems use 3" single front pipe into 2 1/4 twin rears. Anyone tried different systems on thier VN/VP etc?

clark20, Mar 29, 2:57pm
I very much doubt a 3" would help much, unless you are over 300hp

howz_that, Mar 29, 3:43pm
Abit of port work and a cam before you need a bigger exhaust.

attitudedesignz, Mar 29, 4:40pm

mrfxit, Mar 30, 8:09am
Pretty & technically nice

richardmayes, Apr 1, 3:04pm
LS1

dave653, Apr 1, 3:06pm
Hmmm, nice! However, the missus would shit her pants with that lot! Not to mention the speeding tickets.

dave653, Apr 1, 3:07pm
I have a set of recon ported heads on the spare car. I didn't notice much after I fitted them.

dave653, Apr 1, 3:08pm
Sort of crap I don't want to hear.

richardmayes, Apr 1, 3:16pm
When you get your engine making the same power as a stock 5.7 V8, please report back here with how much it all cost, and if it's cheaper than trading the car in for a V8 would have been, then MAYBE I'll withdraw and apologise.

Maybe.

dave653, Apr 3, 11:48pm
Who said I wanted v8 power?