Originally Posted by semtex (Post 36714)

Agreed, 100%. Spiderman -- a cat-back exhaust is so named because it's from the cat, back. As in, from the back of the catalytic converter(s) onwards. A cat-back exhaust alone will yield significant results. But to go the extra distance, some people also replace the stock catalytic converters with either high flow cats (HFCs), or test pipes. Test pipes are essentially just pipes with nothing in them. In other words, you're taking out the cats entirely and have nothing to filter out the pollutants. Test pipes are not street legal, fyi. Not that I have anything against them per se. I had Kinetix test pipes on my 350. But this time around, I've decided to go with HFCs and stay 'clean'. Think of HFCs as a compromise in between full-blown test pipes and restrictive stock HFCs. Stillen does not currently have HFCs available for the 370. However, Berk and Kinetix do. If you look at the thread on the Berk HFCs, you'll see that they alone yield up to +19whp, and they alone give you a much nicer exhaust note. Here's the link to DD's group buy thread, which includes the dyno results and the sound clip video:

http://www.the370z.com/drivetrain-en...group-buy.html

I've decided to get both the Stillen exhaust as well as the Berk HFCs. That should really open up the sinuses, so to speak. Then once I get the CAI put on, we'll really be in business!

Originally Posted by spiderman (Post 36723)

Thanks very much for everyone's feedback, I appreciate the help! It's what I thought but wanted to make sure. I was thinking of the same set-up based off what I have been reading semtex. Quick question .. at cruising speeds, will adding the Berk HFC's be too loud combined with the Stillen Cat Back?

Originally Posted by m4a1mustang (Post 36998)

I'd really love to hear some clips of this catback with the berk hfcs. Semtex, gonna break out the video camera for us? :D

Originally Posted by Nikon FM (Post 36967)

Semtex,

Are you going to dyno your car after the mods are in place? I'd like to do the same setup but am not too committed until I see the results/benefits. Perhaps one of the Venders who sales all the parts can do a dyno session and post the incremental results...........might motivate some additional purchases?

Originally Posted by SoCal 370Z (Post 35668)

I wish the tips were cut at an angle like the stock tips to flow better with rear body styling.

Originally Posted by Josh@STILLEN (Post 37279)

Exhaust is 409 stainless, tips are 304..

Price currently is $1,260 with $9.95 shipped anywhere in the 48 states

Originally Posted by semtex (Post 37322)

I honestly don't understand why some of you are making such a fuss about angled exhaust tips. Even the Nismo exhaust doesn't have angled tips. Here's a pic of Minicobra's Z, and he has the Nismo exhaust. Don't get me wrong; angled tips would be a nice touch. It just seems like such a minor, petty little thing to be griping about to me. Want some cheese with your whine, guys? ;)

Having said that though -- Josh and/or Kyle, do you guys have a side/quarter shot like the one below of the new Stillen exhaust? I think it'd help a lot of guys out to see it from that angle.

http://www.the370z.com/members/minic...arter-shot.jpg

Originally Posted by m4a1mustang (Post 37324)

Yeah, I prefer these tips to the stock angled ones. :tup:

Originally Posted by semtex (Post 37325)

Now, one thing that I am a little iffy on is how far the tips of the Stillen exhaust jut out. If you look a the video on p.1, it looks like they come out further than the Nismo or stock. It might still look okay, but without a side shot, it's hard to tell. Of course, I've already taken the plunge with ordering one of these, so I guess I'll find out soon enough! Would still be nice to see a side-angle pic though. If all else fails, I'll post one after I get mine installed for everyone else's benefit.