in the driveway or wheeling out bush it was a PITA to drive on the highway. It was waaaay too loud at 2k to 3.5k rpm right where you cruise at and left your ears ringing at the end of a trip (and was probably illegal too). On wifes orders I went back and had the resonator fitted to settle it down. Still has a nice note at idle and wot but is more subtle at crusing revs.I paid $650 fitted (not including the extractors which were already on) at a carline shop.
The stainless pipe you have would sound nice with a s/s muffler (s/s glasspack, mmm) but i predict that it will sound too flatulent without some kind of resonator. And shell out for a cat like i have, the environment will thank you and it won't effect performance at all (X2 if you get the pipe you have press bent). Is the pipe you have the correct thickness for an exhaust. Too thin and your going to bash the hell out of it offroad. Too thick will just add weight. Also why use all those prefab bends. aren't all the weld seems going to add tubulence?
Dont get a tip! It looks wank. Use the cash saved to have the system bent and hung by an installer, you will gain some extra clearance.
As far a power goes from my 1.6 efi I don't know if i have increased peak power at all but may have flattened the power and/or torque curves to produce a little more at lower revs (which is what i understand tri-y does as opposed to 4-1's). I seem to get up hills on the way to my wheeling spots with less throttle and holding higher speed but those kinds of observations tend to be highly subjective (ie sounds louder = more power???)
Edit: just read your later posts I'm very happy with this
http://www.lukey.com.au/default.asp?pag ... ENT&sid=63
But as said I had to get the resonator as well
id say more power to hold a certain rev.... up a hill
