AP Exhaust Numbers - Page 10 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

d1ck · 07-20-2012, 03:14 PM

Quote:

Originally Posted by 97gst

Dyno back to back, exhaust vs open dump.

No exhaust makes power, they only lose more less than others.

Exhaust looks nice, but in the end it's a shiny hollow tube. There is no magic here to "make" the kind of power being claimed.

A header does "make power" when sized properly. With proper sizing the inertia from the high velocity exhaust gas will help with something I believe is called scavenging. If too small the pressure loss through it will be too high, and if too large the exhaust gas velocity will be too low.
I believe this is where that backpressure myth comes from.

SpeedR · 07-20-2012, 03:27 PM

Quote:

Originally Posted by 97gst

Dyno back to back, exhaust vs open dump.

No exhaust makes power, they only lose more less than others.

Exhaust looks nice, but in the end it's a shiny hollow tube. There is no magic here to "make" the kind of power being claimed.

Not true.

Cars with no headers make a lot less power than cars with headers.

dabocx · 07-20-2012, 03:39 PM

Is this a 60mm or 70mm system?

Also while i think the claims are insane the company is right, there is nothing to be gained from lying. This is 2012 ,when that exhaust and header setup starts hitting consumers hands itll be dynoed half a million times by others. Give it a few weeks and we will see alot of runs.

_hollywood · 07-20-2012, 03:39 PM

So much negativity, come on people :happy0180: we are talking about exhausts here.

Tainen · 07-20-2012, 03:46 PM

Does this system still throw check engine lights?

Mr.Jay · 07-20-2012, 03:51 PM

waiting for more proof before I say anything else

just hard to believe a 2.0 NA making 40whp and 20wtq on just a exhaust and header. the tq is what i really find hard to believe

but if this is true I'm exciting for the future of this engine

denkigrve · 07-20-2012, 03:53 PM

It's like a month goes by and everyone forgets that Japan had a cutback alone net 30HP for the car. It's 3k Titanium cat-back, but they claimed 30HP to the wheels and they have better gas. Imagine if they did a header back like Vivid, they'd likely be seeing closer to 40-50HP easily.

I can't get this exhaust since it's hella not CA legal, but am looking forward to some customer reviews on different dynos to see what their results are.

Good job on this type of increase Vivid/Agency Power. 5th time's the charm amirite?

Lonewolf · 07-20-2012, 04:11 PM

As pointed out by another member, I'm sure that some of this gain is coming from the car breaking in compared to when it was first dynoed fresh off the lot.

empower-auto · 07-20-2012, 04:12 PM

Quote:

Originally Posted by Lonewolf

As pointed out by another member, I'm sure that some of this gain is coming from the car breaking in compared to when it was first dynoed fresh off the lot.

I talked to Mike @ Vivid and he says this is not the case. The car was dyno'd with the same mileage.

denkigrve · 07-20-2012, 04:12 PM

Quote:

Originally Posted by Lonewolf

As pointed out by another member, I'm sure that some of this gain is coming from the car breaking in compared to when it was first dynoed fresh off the lot.

In the end too many of you are focusing on the "from x to y" and not focusing on the "y" which is the final number, and the one that matters if you want more power.

Lonewolf · 07-20-2012, 04:18 PM

Quote:

Originally Posted by empower-auto

I talked to Mike @ Vivid and he says this is not the case. The car was dyno'd with the same mileage.

If that's the case...wow, I would love to see that this is easily replicable...it just seems hard to swallow. These are the types of gains you see from turbo fours, not N/A four-bangers.

I WANT the gains to be this good, I just hope that a cat (a must for me) won't affect the numbers too much.

vividracing · 07-20-2012, 04:21 PM

Quote:

Originally Posted by dabocx

Is this a 60mm or 70mm system?

Also while i think the claims are insane the company is right, there is nothing to be gained from lying. This is 2012 ,when that exhaust and header setup starts hitting consumers hands itll be dynoed half a million times by others. Give it a few weeks and we will see alot of runs.

2.5" 304 stainless steel piping

Thanks!

ryude · 07-20-2012, 04:27 PM

Rule of Acquisition #190

vividracing · 07-20-2012, 04:30 PM

Quote:

Originally Posted by ryude

Rule of Acquisition #190

http://www.cafepress.com/otterdisaster.468953995

???

07-20-2012, 03:39 PM	#130
_hollywood Senior Member Join Date: Jan 2012 Drives: 97 itr sold Location: WI Posts: 565 Thanks: 183 Thanked 165 Times in 98 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	So much negativity, come on people :happy0180: we are talking about exhausts here. __________________ FR-S #56 of 86 Raven MT *FOR SALE*

07-20-2012, 03:46 PM	#131
Tainen Senior Member Join Date: Nov 2011 Drives: First SWP BRZ-L Location: Washington Posts: 809 Thanks: 154 Thanked 350 Times in 174 Posts Mentioned: 11 Post(s) Tagged: 0 Thread(s)	Does this system still throw check engine lights? __________________ First white BRZ in the country Limited SWP BRZ, 35% tint, clear bra, Nameless Performance downpipe, axelback, headers

07-20-2012, 03:51 PM	#132
Mr.Jay Senior Member Join Date: Mar 2011 Drives: FRS :D Location: Vancouver BC Posts: 2,985 Thanks: 545 Thanked 699 Times in 438 Posts Mentioned: 18 Post(s) Tagged: 0 Thread(s)	waiting for more proof before I say anything else just hard to believe a 2.0 NA making 40whp and 20wtq on just a exhaust and header. the tq is what i really find hard to believe but if this is true I'm exciting for the future of this engine __________________ Out of the FRS game

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07-20-2012, 03:39 PM	#129
dabocx Senior Member Join Date: Jan 2012 Drives: Scion FRS Location: United States Posts: 1,267 Thanks: 564 Thanked 261 Times in 191 Posts Mentioned: 9 Post(s) Tagged: 0 Thread(s)	Is this a 60mm or 70mm system? Also while i think the claims are insane the company is right, there is nothing to be gained from lying. This is 2012 ,when that exhaust and header setup starts hitting consumers hands itll be dynoed half a million times by others. Give it a few weeks and we will see alot of runs.

07-20-2012, 04:11 PM	#134
Lonewolf Senior Member Join Date: Dec 2011 Drives: Moped Location: CA Posts: 4,300 Thanks: 4,905 Thanked 2,132 Times in 1,195 Posts Mentioned: 21 Post(s) Tagged: 0 Thread(s)	As pointed out by another member, I'm sure that some of this gain is coming from the car breaking in compared to when it was first dynoed fresh off the lot.

07-20-2012, 04:27 PM	#139
ryude Senior Member Join Date: Nov 2010 Drives: Volkswagen GTI Location: Louisiana Posts: 466 Thanks: 6 Thanked 32 Times in 13 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Rule of Acquisition #190

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