For sh#ts and giggles. - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

MaXimus · 04-15-2014, 01:51 PM

What's best full exhaust regarding power, don't care about sound, raspy, cats or cost.

Outright performance!

Cheers.

P. S - n/a application.

Fred E · 04-15-2014, 02:02 PM

Probably full Nameless 3" engine-back. I'm not aware of any other full 3" systems in production.

Hawaiian · 04-15-2014, 02:07 PM

Quote:

Originally Posted by Fred E

Probably full Nameless 3" engine-back. I'm not aware of any other full 3" systems in production.

Perrin has had a full 3" header back on the market for a little while.

wparsons · 04-15-2014, 03:09 PM

^^ Almost, they didn't have a 3" overpipe.

mrk1 · 04-15-2014, 03:38 PM

Is there proof that 3" makes a gain on these cars NA?

PMPB · 04-15-2014, 04:07 PM

I'm with mrk1. I'd like to see real gains through the power band. 3" may only provide a very peaky TQ curve, scavenging at lower RPM on a full 3" system is probably going to be crap, worsening, or at least not improving power delivery.

FR-S Matt · 04-15-2014, 04:14 PM

3" chokes at low RPM but has good top end. That's what I experienced on my Nameless 3" before I sold it. Couldn't stand the rasp fartcan sound. Power gain is negligible unless you're turbo.

DylanFRS · 04-15-2014, 04:29 PM

Quote:

Originally Posted by FR-S Matt

3" chokes at low RPM but has good top end.

Your definition of flow choke and mine must be very different.

How about the lightest exhaust? Best performance should take into account power gain AND weight loss.

PMPB · 04-15-2014, 05:06 PM

Quote:

Originally Posted by DylanFRS

Your definition of flow choke and mine must be very different.

How about the lightest exhaust? Best performance should take into account power gain AND weight loss.

He didn't really say that it chokes the flow. I think he was using it colloquially to say that it doesn't work at low RPM. With that said, 3" pipes probably don't provide for enough exhaust momentum at low RPM, and thus bad scavenging, you COULD say that it is choking, the flow.

350matt · 04-15-2014, 05:15 PM

I'd agree a full 3" system should be the best, and while its probably too much exhaust for a more or less standard engine it won't hold back a supercharger install so if your're considering that for the future then 3" is the way to go

FR-S Matt · 04-15-2014, 06:12 PM

Quote:

Originally Posted by PMPB

He didn't really say that it chokes the flow. I think he was using it colloquially to say that it doesn't work at low RPM. With that said, 3" pipes probably don't provide for enough exhaust momentum at low RPM, and thus bad scavenging, you COULD say that it is choking, the flow.

^ This.

leicaboss · 04-15-2014, 06:32 PM

What about a Tomei system? It's way light!

DylanFRS · 04-15-2014, 09:17 PM

Quote:

Originally Posted by leicaboss

What about a Tomei system? It's way light!

I agree with this guy, let's talk about weight.

SirBrass · 04-15-2014, 09:57 PM

Quote:

Originally Posted by leicaboss

What about a Tomei system? It's way light!

The weight savings between the axlebacks is negligible in the long run. I'm more concerned with aero in the rear if I want to nitpick about something that could affect the car more. I'd rather put the money saved by going with a less expensive exhaust system (like a greddy sp elite axleback) into reducing unsprung weight than reducing sprung weight.

04-15-2014, 01:51 PM	#1
MaXimus Meh! Join Date: Jul 2012 Drives: Satin White, 86, Manual Location: Dubai Posts: 98 Thanks: 224 Thanked 18 Times in 12 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	For sh#ts and giggles. What's best full exhaust regarding power, don't care about sound, raspy, cats or cost. Outright performance! Cheers. P. S - n/a application. __________________ RAYS TE37V 17X9 / MICHELIN 245/40/R17 / KW V3 / RACESENG TOP HATS / MOTUL 5.1 + BRAIDED LINES / FERODO DS2500 BRAKE PADS / NEXUS 7 IN DASH / VDS UEL HEADERS / CRAWFORD POWER BLOCKS/ K&N DROP IN FILTER / Custom 3 inch header back catless exhaust / Varex 3in Muffler / HT AUTO LIP KIT / VALENTI TAIL LIGHTS / MORIMOTO PROJECTOR + HID.

04-15-2014, 03:38 PM	#5
mrk1 Senior Member Join Date: Mar 2013 Drives: Sterling BRZ Ltd Location: New England Posts: 1,702 Thanks: 403 Thanked 1,389 Times in 671 Posts Mentioned: 20 Post(s) Tagged: 2 Thread(s)	Is there proof that 3" makes a gain on these cars NA? __________________ The Build Thread GT28RS - eBoost2 - 3.91 Final Drive - Supra LSD

04-15-2014, 06:32 PM	#12
leicaboss Coffee Snob Join Date: Dec 2013 Drives: '14 SWP BRZ Limited Location: SF (Mission) Posts: 992 Thanks: 536 Thanked 395 Times in 250 Posts Mentioned: 31 Post(s) Tagged: 0 Thread(s)	What about a Tomei system? It's way light! __________________ My Build Thread: Hannah, my '14 SWP BRZ Weekly SF/Daly City Meet: Tuesdays @ 7pm

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Fred E Senior Member Join Date: Dec 2013 Drives: WRB BRZ Location: New Jersey Posts: 261 Thanks: 83 Thanked 150 Times in 96 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Probably full Nameless 3" engine-back. I'm not aware of any other full 3" systems in production.

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PMPB Senior Member Join Date: May 2013 Drives: BRZ Sport-tech Location: Canada Posts: 347 Thanks: 77 Thanked 182 Times in 111 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	I'm with mrk1. I'd like to see real gains through the power band. 3" may only provide a very peaky TQ curve, scavenging at lower RPM on a full 3" system is probably going to be crap, worsening, or at least not improving power delivery.

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350matt Senior Member Join Date: Jul 2013 Drives: toyota mr2/ Toyota GT86 Location: UK Posts: 438 Thanks: 3 Thanked 140 Times in 92 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	I'd agree a full 3" system should be the best, and while its probably too much exhaust for a more or less standard engine it won't hold back a supercharger install so if your're considering that for the future then 3" is the way to go

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