De-cat exhaust system

[ozmdd]

Originally Posted by aucorium

well , been doing research , and it seems that a full exhaust system , header and de-cat gives the @2NZFE 1300cc 9 kw more power !! dyno tested here in RSA , thats on approx 50mm exhaust , thats 12 HP , and with a dastek uniQ it jumps to 12 kw , not to bad for a 1300cc , i bet the 1500cc will do much better

Again, not to dispute your info, but that sounds about the same as the gains I got from a CAI and an axle-back exhaust w/ an underdrive pulley. No changes to my exhaust manifold or cats/midpipe at all. I don;t think the cat gives you even 1 hp.
I'd love to see something that shows different results.