Originally Posted by ZLadie2000

So all those MOds are without a tune? 40 rwhp without a tune, and how much did you spend? Cams must not have been cheap, what type of cams do you have?

Wow, seems like you really need the tune to bring out more hp, why not the UTEC?

Originally Posted by gsi

so many times the Exhaust Question has come up. and there are so many answers and theories and opinions, This is my professional opinion on how one should look at exhaust systems for the 350z and G35, first and for most what are you looking for, most likely if it is raw power, you need to look at a package or a combination of equipment that is going to give you that end result, not on a part by part bases. 2, quality, one system may do slightly better than another but will it last will it fit properly, will it cause stress on other stock components, and cause them to fail, is 1hp worth drivability issues. 3 price get the best quality part you can and don't buy it due to hype. and finally realise its just a pipe to get exhaust to the back of the car, there is no magic. its only going to help the other mods work better not create lots of power on its own!!

OK
APS -- 2.5 true duel -nice top quality construction better than oe and show quality finish , nice tig welds/ heavy duty will out last the car not very loud, best flanges, needs more aggressive sound. 8-10 wheel on it own.

APS 3"race system. again top quality as above,very nice sound great flex joint design a must for turbo or s/c cars../ About the best out there,needs balance tube, not for the timid. needs more attractive tips 8-14 alone

Greaddy race system. good true duel ok look, fair sound, fair finish, lite ,not the best fit good at best construction. to expensive for the quality. average power 5-9 hp.

stillin, great power 8-12 hp good design (H pipe) fair fit, terrible finish, muffler shop quality construction, never seen 13hp

Nismo--- good finish , good construction (welds), good sound (best feature), thin 304 most likely not virgin, poor design (Y) not good for further mods. not the best for turbo or S/C cars 3-6HP

b&b--- good sound , good finish on cans only, poor fit, poor construction, dos not last (welds brake falls apart) 3-5 hp ,single

borla--- good design! true duel good power ( no individual data) nice tips good sound, poor finish sad not to polish the 304, borlas of the shelf resonators and can.

hks--- (HI Power only) phenomenal system great design, one of the best sounds available. good finish, fair construction quality, some fit and alignment issues ( but not bad) good power 8-10Hp poor tips( don't stay on poor fit). a bit pricey

invidia--- will just crack and fall apart. i have repaired to many cracks to count in these systems, i wont give a full evaluation!

all other brands i have not had enough to give good data on. hope this helps!