Just go 4" xforce, even if some don't fit easy as Ratter mentioned it will still be less of a pain than Nizpro and half the price. Xforce 4" may be a bit on the noisy side from what I've heard but it is what it is.

Ive just put a redback twin 2.5 catback on and it sounds very nice, yet to do the xforce dump for the front end dont no if that will ruin the sound or not. For now sounds great, all the youtube stuff of xforce I didnt like the sound at all.

If you want an Australian made 4" SS Exhaust, Tunehouse does one for about $2500 fitted..

I just purchased my CES zorst today I went with the HPC dump mild steel sys with S/S reasonator and muffler twin 3" perforated tips main reason I went this way is 1 of my very good mates works there so I did get a bit of a discount and the owner trev is letting my mate and myself fit it on a saturday morning free of charge and atleast you no its made in aus any dramas there just around the corner and there quality is up there with the best of any zorst in australia I cant say for sure ive never owned a x-force but you just hear way to many stories of them always rattling hitting the body that's what turned me away from them and not to mention every 2nd xr6/f6 has a x-force but I guess they would be best bang for buck no doubt

I have a twin 2.5 xforce on my typhoon, would be the quietest exhaust I have ever had on a car, buy still flows the power to make you smile when you hit the happy pedal

The note on the Nizpro exhaust is awesome. Have heard a few different xforce systems under full noise and no where near the note that the Nizpro has. My Nizpro system doesnt hit anywhere at all and cant really complain bout any drone as it has a stally aswell, which makes it a little louder at low revs,low speed. I have to admit when it was first fitted,the cat would come over after a hard flog and tap on the chassis rail,due to the exhaust expanding with heat. They put an extra hanger off the auto mount and it has never hit since. Arent the xforce like $1500 plus fitting??? What are the Nizpro systems worth now days? Thought they were somewhere round $2200 fitted??

I too are a fan of the 4 inch nizpro, no problems with mine. I dont wont any exhaust limiting my power.

Any one have a nizpro exhaust in Brisbane

Hey anyone with the Nizpro exhaust I have a question. Mine is a little loose down the rear and is banging a bit on the body and is giving me the sh1ts. Has anyone else had an issue with the mounting rubbers stretching? Its a bloody heavy thing. Just want to secure it a bit more as I am really about to give up the ghost and buy a mazda.

Did I say that? No I wouldnt do that. But I am annoyed.

Im in the process of researching which exhaust is best for me.

Im considering this or a twin 2 1/2 inch (both same price, and claim to support same power?)

liverpool exhaust has shown me their 2 1/2" system (a worker there has a xrt of his own) and assures me its drone free. I really don't mind the tone of it either

I spoke to a guy at nizpro and he said the 4" system is fairly quiet due to using massive mufflers, when I asked about drone, he did tell me at about 1700rpm is the only time it slightly drones, can any owners confirm this?

does anyone have any videos of the nizpro system? I can't seem to find any good ones on youtube or anywhere..