This is topic To the doubters of cutouts.. in forum Tech Talk at Northern California Ford Owners  .


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Posted by sqwznss (Member # 3796) on :
 
I saw a post here about 3-4 weeks back were some people thought cut outs were good and some thought bad. I posted my thoughts. Here is a dyno from 11/26 comparing closed and open cut outs. There are pics as well of the set up. Given I have cats, I still think the cut outs make a great mod..

Open Vrs Closed

Torque

HP

Here are some pics of the set up.. Exhaust]pics

Given there are cats when through the exhaust, I still think it is a great gain. Plus it is quite as can be sealed up..


As far as the people that will say you get cold air back on the O2's making it run rich, do not believe it. I have several logs testing it. If you have enough exhaust pipe after the cut outs you will be fine. That is why I set mine up this way. I will be adding some to the driver side just to make sure.

[ December 05, 2003, 11:43 AM: Message edited by: sqwznss ]
 
Posted by 1SLOWLX (Member # 558) on :
 
nice what is your setup
 
Posted by sqwznss (Member # 3796) on :
 
I don't drive a mustang so I don't know if it is relivant to you site. I just wanted to pass on info to fellow hot rodders.
 
Posted by mostang (Member # 3352) on :
 
sqwznss,
That is one sweet trick set-up. How much was it to put it all on? Did you get them from here:
http://www.quicktimeperformance.com/qtec.htm
 
Posted by Black94 5.0 (Member # 655) on :
 
You exhaust must be restrictive...It shows a gain of 23rwtq and 9rwhp...Dont forget your running cats on one system and they are restrictive...So Camaro right, what size Y-pipe and muffler are you running?
 
Posted by sqwznss (Member # 3796) on :
 
Yes they are QTP's.. I think it was around $270's for the cut-outs, $230 for the Y-pipe parts, and $300 for the Y-pipe. It wasn't "cheap" But I love the quiteness of the exhaust being closed and the gains when it is open.
 
Posted by mostang (Member # 3352) on :
 
That's what I plan on doing after the brakes. I to like the sound of a nice rumbley exhaust but would like to open it up a little on weekends cruising around town or flat out gettin' on the freeway.
 
Posted by sqwznss (Member # 3796) on :
 
Black94.. I must have missed your post.. Sorry. There are gains of 22rwhp in spots as well. Peak it was like 10-12 rwhp.. The exhaust has a 3" y-pipe and a 3" in dual 3" out hooker Aeromax muffler which is one of the better flowing mufflers for our F-bodies.
 




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