Active exhaust?

vehl · 08-12-2009, 07:22 PM

Is there an exhaust out there that has butterfly valves like the one in the TT V6, where it opens up at higher revs to give a better vocal range, and stays decent at normal revs?

Modshack · 08-12-2009, 08:54 PM

Quote:

Originally Posted by vehl

Is there an exhaust out there that has butterfly valves like the one in the TT V6, where it opens up at higher revs to give a better vocal range, and stays decent at normal revs?

There is but it's outrageously expensive $4275. Link: http://370ztune.com/370z/z34/power_c..._valve/pid/685

kdoske · 08-14-2009, 09:18 PM

just install some cutoffs for a couple hundred bucks and be done with it. Honestly though these type of systems are really only beneficial on cars with Forced Induction...

vehl · 08-15-2009, 05:36 AM

well the 3.2 v6 TT doesnt have forced induction.. its really not for any benefit aside from sound.

Modshack, thats one pretty expensive exhaust! looks like thats outta the qn.

Shunya · 08-15-2009, 08:33 AM

With the price i pay for these I'd rather get the Zele's :P

Modshack · 08-15-2009, 10:30 AM

Quote:

Originally Posted by kdoske

just install some cutoffs for a couple hundred bucks and be done with it. Honestly though these type of systems are really only beneficial on cars with Forced Induction...

You're right. The new electric cut-outs are pretty reasonable and there's a natural place to mount them on the Z.

Actually these Valved exhaust systems work very well on NA cars. I had the "NPP" factory valved exhaust on my Vette and it was pretty awesome and made more horsepower. It actually routed the exhaust straight through the muffler when open. The one mentioned on the 3.2 Audi is not quite as refined and used primarily for meeting noise restrictions..

DAN1 · 08-15-2009, 12:52 PM

I'd recommend contacting Apex'i USA for the request for this type of exhaust. They already have the mufflers & technology to do it.

Apex'i PS Revolution mufflers, Active Tail silencer, and Exhaust Control Valve (ECV). They used to have the electric version but due to limited demand in the USA they stopped selling as many.

Other technological options: AeroTurbine mufflers, Hooker AeroChamber mufflers, or electric cut-out valves from QuickTime Performance, Summit, Pypes, and Ready Race Performance.

Or.. just research the internal designs of the C6 corvette mufflers, Nissan variable flow mufflers, etc... and pickup one of those used.

vehl · 08-17-2009, 02:05 AM

yeah the Z06 exhaust is pretty awesome.. saw the valves in action on TG when JC reviewed it.

08-12-2009, 07:22 PM	#1 (permalink)
vehl Base Member Join Date: Dec 2008 Location: asia Posts: 140 Drives: 370z PW/ GTI Rep Power: 16	Active exhaust? Is there an exhaust out there that has butterfly valves like the one in the TT V6, where it opens up at higher revs to give a better vocal range, and stays decent at normal revs?

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08-14-2009, 09:18 PM	#3 (permalink)
kdoske Track Member Join Date: Jul 2009 Location: Louisiana Posts: 541 Drives: 800whp Unicorn FI Z Rep Power: 17	just install some cutoffs for a couple hundred bucks and be done with it. Honestly though these type of systems are really only beneficial on cars with Forced Induction...

08-15-2009, 05:36 AM	#4 (permalink)
vehl Base Member Join Date: Dec 2008 Location: asia Posts: 140 Drives: 370z PW/ GTI Rep Power: 16	well the 3.2 v6 TT doesnt have forced induction.. its really not for any benefit aside from sound. Modshack, thats one pretty expensive exhaust! looks like thats outta the qn.

08-15-2009, 08:33 AM	#5 (permalink)
Shunya A True Z Fanatic Join Date: May 2009 Location: Vancouver Posts: 3,069 Drives: You Crazy! Rep Power: 22	With the price i pay for these I'd rather get the Zele's :P

08-15-2009, 12:52 PM	#7 (permalink)
DAN1 Banned Join Date: Jun 2009 Location: Grand Prairie TX Posts: 17 Drives: Nissan Chevy Honda Rep Power: 0	I'd recommend contacting Apex'i USA for the request for this type of exhaust. They already have the mufflers & technology to do it. Apex'i PS Revolution mufflers, Active Tail silencer, and Exhaust Control Valve (ECV). They used to have the electric version but due to limited demand in the USA they stopped selling as many. Other technological options: AeroTurbine mufflers, Hooker AeroChamber mufflers, or electric cut-out valves from QuickTime Performance, Summit, Pypes, and Ready Race Performance. Or.. just research the internal designs of the C6 corvette mufflers, Nissan variable flow mufflers, etc... and pickup one of those used.

08-17-2009, 02:05 AM	#8 (permalink)
vehl Base Member Join Date: Dec 2008 Location: asia Posts: 140 Drives: 370z PW/ GTI Rep Power: 16	yeah the Z06 exhaust is pretty awesome.. saw the valves in action on TG when JC reviewed it.