Pro Stock John

iTrader: (34)

Brooke,

Tony said you did a lot of experimenting with dual cutouts.

I am running TTS longtubes, 3" ORP with 3" collector, and 4" Mufflex.

I might do dual 3" cutouts and run a quiet exhaust.

Trevor @ Texas Speed & Perf.

iTrader: (3)

I'm not Brooke, but I had dual cutouts on my T/A. It was well worth the time and money, too. I gained 20 RWHP on the dyno by opening them up vs. running out the y-pipe. I nearly fell on the floor when I saw it. With your cubes and an A4, there's no doubt that you'll benefit with dual cutouts.

Damian

iTrader: (89)

[quote]Originally posted by Trevor D:
<strong>I'm not Brooke, but I had dual cutouts on my T/A. It was well worth the time and money, too. I gained 20 RWHP on the dyno by opening them up vs. running out the y-pipe. I nearly fell on the floor when I saw it. With your cubes and an A4, there's no doubt that you'll benefit with dual cutouts.</strong><hr></blockquote>


Trevor, in what location did you install these cutouts?? Directy behind the collector on the headers?

Nine Ball

iTrader: (38)

John, I currently have dual cutouts on my FLP Y-pipe. I picked up about 8 rwhp on the same day (dynoed before/after) vs my single 3" cutout that I had. Mine are mounted just behind the place where the offroad sections and catalytics bolt in, just before the Y makes the bend back towards the middle of the car.

FYI, my car made a little more power with open headers (about 4 rwhp) compared to the dual-cutouts, but I cannot drive the car like that so I've never run it that way. These dual cutouts perform about the same as the pair of dumped 2.5" bullets I had on the car at Bowling Green.

Tony

Jorday

I have a few cutout questions, too. First, does the FLP y pipe consist of two 2.5 inch pipes that go into a 3" collector like MAC y pipe does once you do the collector to it or does the FLP y pipe have bigger pipes after each header? I have a dual/dual catback right now and want to install a 3" cutout somewhere just after the collector, is that the best place for a single cutout? Also, I thought somebody determined a while ago that dual cutouts isn't worth it on, for example, a car with Heads/cam/bolt ons. Is that true? <img src="images/icons/confused.gif" border="0">

BTW Tony, I e-mailed you a while ago, did you get it?

Trevor @ Texas Speed & Perf.

iTrader: (3)

[quote]Originally posted by DamianLS1:
<strong>


Trevor, in what location did you install these cutouts?? Directy behind the collector on the headers?</strong><hr></blockquote>
you've got it; BTW, my y-pipe was a 2.5".
Jorday - Whether a set of dual cutouts will work or not depends on a few things. Tony did some testing w/ dual cutouts on his heads/cam setup, and he lost some bottom-end torque because of it. If you're an A4 with a fat stall, it would be easy to have the converter flash past the point where you have the torque loss. So, dual cutouts could be beneficial on an A4 heads/cam setup. It just depends on how everything is setup.

[ December 12, 2001: Message edited by: Trevor D ]</p>

Terry Burger

iTrader: (4)

I run dual 2.5" cutouts, TTS ypipe, and the stock catback. I pick up 33rwhp/40rwtq with the cutouts open. <img src="gr_images/icons/wink.gif" border="0">

99RedHawk

Sorry for the late reply John, but I don`t roam the boards very often anymore.. <img src="gr_stretch.gif" border="0">

No doubt you will pick up some good power with duel cut outs..With your stroker, I would run the 3" duels right off the collectors..I found that you want the exhaust hole on the cut-out to be about 14" back from the header, mac headers..Your long tubes should work fine if they are closer though.. I always ran a 2.5" y pipe after the duel cut outs with a 3.5" collector, then I picked up 8 RWHP with the duel cut outs.. I showed no low end torque loss as Tony did but my converter did flash over above that rpm..

I highly advise you going to duel cut outs with your stroker..That 3" cut out actually is restrictive to a 2.5" y pipe and especially a 3"one..

I ran a quiet SLP exhaust and duel cut outs..Best of both worlds..Quiet on the road but funny car loud at the track <img src="gr_stretch.gif" border="0">

Good luck and I hope to see your 10 second ET soon!

Pro Stock John

iTrader: (34)

Thanx hardcore buds!

I will do dual 3" cutouts then.

I think I will change my catback.