cut out vs. catbacks??

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Mar 1, 2009 | 11:56 AM

#21

greatskiiiier

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From: Long Island, NY

because he has a stock cb and h/c... if he had a good flowing cb that number would be drastically reduced... if he had a good flowing cb and no h/c it would have been <5rwhp

i have tsp rumbler, its basically straight 3" from y pipe back, if i threw a cutout on there id see 1-2rwhp at the most

Mar 1, 2009 | 12:57 PM

#22

disc0monkey

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edited: linn.35, where did you put your cutout. you obviously found the ideal location lol

Last edited by disc0monkey; Mar 1, 2009 at 11:24 PM.

Mar 1, 2009 | 08:10 PM

#23

ExceSSive

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From: Gateway International Raceway

Quote:

Originally Posted by disc0monkey

ExceSSive, where did you put your cutout. you obviously found the ideal location lol

I don't have a cutout yet...I was commenting on somebody elses results. I will let you know what a cutout does for me.

Mar 1, 2009 | 08:27 PM

#24

RealLiveMD

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I have a dyno proven 3hp difference overt my magnaflow catback(the best catback by the way).

Mar 1, 2009 | 08:47 PM

#25

SMALLBLOCKHERO

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From: Buffalo, NY

Quote:

Originally Posted by greatskiiiier

i have tsp rumbler, its basically straight 3" from y pipe back, if i threw a cutout on there id see 1-2rwhp at the most

i ran 2 tenths quicker with my tsp rumbler catback .then with a cutout just after the cats on a stock exhaust. i thought it was weird, but thats what happened.

Mar 1, 2009 | 11:24 PM

#26

disc0monkey

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Quote:

Originally Posted by ExceSSive

I don't have a cutout yet...I was commenting on somebody elses results. I will let you know what a cutout does for me.

sorry fixed

Mar 2, 2009 | 02:20 AM

#27

venom ws7

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From: EARTH

Friend of mine with Boltons TR Trak cam made 360rwhp through LT Headers ORY with Flowmaster catback after the Cutout it made 392rwhp.

nothing else changed not even the tune.

Mar 2, 2009 | 02:36 PM

#28

Johnnystock

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isnt flowmaster called the chokemaster?

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Mar 2, 2009 | 02:50 PM

#29

quiet_storm98

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Quote:

Originally Posted by SMALLBLOCKHERO

i ran 2 tenths quicker with my tsp rumbler catback .then with a cutout just after the cats on a stock exhaust. i thought it was weird, but thats what happened.

same thing kinda happened to a guy i know..he has a magnaflow cb with a cutout and on the dyno he lost power with the cutout open, also at the track his car was a little slower with it open

Mar 2, 2009 | 07:03 PM

#30

disc0monkey

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could it be location? interested to see where linn.35 put his.

Mar 2, 2009 | 07:14 PM

#31

ZTwentyAteU

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From: Nashville, TN

I gained exactly 11 RWHP and 6 RWTQ with my cutout open compared to running through my B&B catback on the TA. Cutout was under rear seat before the over the axle pipe.

Makes me want to run stock catback and cutout on my next DD again!

Mar 2, 2009 | 09:05 PM

#32

pasbonsimon

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From: Southern Louisiana

Camaro - heads and cam, hooker headers, mufflex y-pipe, cutout, and factory SS catback
cutout open netted 15 RWHP

Mar 2, 2009 | 09:21 PM

#33

ZTwentyAteU

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From: Nashville, TN

Quote:

Originally Posted by pasbonsimon

Camaro - heads and cam, hooker headers, mufflex y-pipe, cutout, and factory SS catback
cutout open netted 15 RWHP

I'm pretty sure we get good results from cutouts because our cam/heads etc.

I can understand possibly losing torque on the bottom of the curve w/ stock cam, cutout prob don't make much more power in the stock cam powerband

Mar 2, 2009 | 11:31 PM

#34

Josh Nickelsen

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For the guys that run stock exhaust and have an electric cutout what size cutout did you use? The reason I ask is my car has the stock exhaust with a cutout on it. I bought it this way and now I am looking to get an electric plate for it and want to make sure I get the correct one. I can't go out and measure it being my car is still in storage. Would I need the 2.5"?

Mar 3, 2009 | 06:53 AM

#35

chevrunner21

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From: westville nj.

my cutout is right after the rear before the muffler i wanted it to seem almost like a cat back and it gives me alot less inside noise than the cars ive seen with the cutout before the rear. also gained like 1.5mph in the 1/4mile.

Mar 3, 2009 | 03:06 PM

#36

linn.35

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From: columbus, ohio

Quote:

Originally Posted by pitbull14218

Ya SLP Loudmouth is a Catback and on a stock car it will make it louder...? My Magnaflow is a lil louder then stock at idle, once im driving its a louder but not too loud.

Maybe you missed this post

Quote:

Originally Posted by chevrunner21

i've already got the cutout lol what i've been debating on is should i get a cat back or just get my buddy to weld up these vette tips and leave the stock exhaust with the cut out.

A catback and cutout will not be louder than just having a cutout.

Quote:

Originally Posted by ZTwentyAteU

Cutout was under rear seat before the over the axle pipe.

Bingo.

Mar 3, 2009 | 03:18 PM

#37

WS-Sick

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From: The point of no return...

Ive got longtubes and a a 3 inch y-pipe. I still have the stock muffler on my car and my cut-out is in the i-pipe. It's loud as hell in and outside the car when open but much more quiet that a car with a catback when closed. I can tell a difference in the tq down low when opened vs closed. It feels like the torque comes on sooner when it's closed as opposed to when open. It's an electric cut-out, by the way, for convenience sake.