I've heard people gaining little if any hp with a cutout, using GMMG. 
Mod ?'s
Thread Starter
Staging Lane
Joined: Apr 2004
Posts: 76
Likes: 0
From: Houston, TX
Mod ?'s My car is basically stock as of now. I want to remove the flowmaster that came on it and replace it with either a LM or Borla Catback. I will aslo be adding an aftermarket lid, probably TSP. I have heard that flowmaster actually hurts more than helps. With that in mind when I replace it with a better flowing catback and adding a lid, will I feel a gain? (SOTP)
TIA,
JT
TIA,
JT
Mustang Moderator
Joined: Jan 2002
Posts: 489
Likes: 0
From: Houston
Friend of mine went from 298RWHP (stock 6-speed 2002 with 500miles) to 330RWHP with a lid and cutout.
Ive got another friend with a 98 that has lt headers off road y pipe and corsa that gained 5 hp with the cut out open.
Ive got another friend with a 98 that has lt headers off road y pipe and corsa that gained 5 hp with the cut out open.
11 Second Club
Joined: Jul 2003
Posts: 2,311
Likes: 2
From: loudoun county,va
first off ABLOSUTLY no cat back on the planet out flows a cutout... how can you out flo wide open?
i saw 13 rwhp gain with my lt1
and 10 with my ls1 over the ws6 exhast
typical gains are 10-15 from just the cut out...
and its pretty normal to see 7-10 from a good lid...
i saw 13 rwhp gain with my lt1
and 10 with my ls1 over the ws6 exhast
typical gains are 10-15 from just the cut out...
and its pretty normal to see 7-10 from a good lid...
Trending Topics
Thread Starter
Staging Lane
Joined: Apr 2004
Posts: 76
Likes: 0
From: Houston, TX
Are there any reccomended muffler shops in Houston (Perferably NW Houston) to install a cutout? Should I have them weld in my new catback and cutout all at the same time, or just bolt up the catback myself and have them weld in the cutout?'
Thanks again guys...
Thanks again guys...
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo Mustang Moderator
Joined: Jan 2002
Posts: 489
Likes: 0
From: Houston
We are off of Cutten road near Cutten Customs. Heres a link to the site with a map. http://www.speeddemonmotorsports.com...g/contact.html
11 Second Club
Joined: Jul 2003
Posts: 2,311
Likes: 2
From: loudoun county,va
lemme help ya some more...
your flowmaster exhast is 3" mandrel bent just like every other cat back out there...
the problem with it is in the 80 series muffler that comes on it.. THAT and not the plumbing is whats wronge...
since a cutout is installed before the muffler(in the i pipe) then the fact that the muffler is crap is a mute point.
keep the set up you have and save the $$$ for headers. have a cutout welded into what you have ... you will get a good hp gain. and it will still have the flow master note only MUCH louder...
your flowmaster exhast is 3" mandrel bent just like every other cat back out there...
the problem with it is in the 80 series muffler that comes on it.. THAT and not the plumbing is whats wronge...
since a cutout is installed before the muffler(in the i pipe) then the fact that the muffler is crap is a mute point.
keep the set up you have and save the $$$ for headers. have a cutout welded into what you have ... you will get a good hp gain. and it will still have the flow master note only MUCH louder...
Originally Posted by jaberwaki
lemme help ya some more...
your flowmaster exhast is 3" mandrel bent just like every other cat back out there...
the problem with it is in the 80 series muffler that comes on it.. THAT and not the plumbing is whats wronge...
since a cutout is installed before the muffler(in the i pipe) then the fact that the muffler is crap is a mute point.
keep the set up you have and save the $$$ for headers. have a cutout welded into what you have ... you will get a good hp gain. and it will still have the flow master note only MUCH louder...
your flowmaster exhast is 3" mandrel bent just like every other cat back out there...
the problem with it is in the 80 series muffler that comes on it.. THAT and not the plumbing is whats wronge...
since a cutout is installed before the muffler(in the i pipe) then the fact that the muffler is crap is a mute point.
keep the set up you have and save the $$$ for headers. have a cutout welded into what you have ... you will get a good hp gain. and it will still have the flow master note only MUCH louder...
Thread Starter
Staging Lane
Joined: Apr 2004
Posts: 76
Likes: 0
From: Houston, TX
jaberwaki,
Is a cutout going to be too loud for driving around town and should be reserved for the track? I really am not that all impressed with the flowmaster sound. I definitely want something louder, however don't care for too much attention that cops would bother me.
Thanks in advance...
Is a cutout going to be too loud for driving around town and should be reserved for the track? I really am not that all impressed with the flowmaster sound. I definitely want something louder, however don't care for too much attention that cops would bother me.
Thanks in advance...
11 Second Club
Joined: Feb 2003
Posts: 5,524
Likes: 1
From: The South
Originally Posted by JHTZ28
jaberwaki,
Is a cutout going to be too loud for driving around town and should be reserved for the track? I really am not that all impressed with the flowmaster sound. I definitely want something louder, however don't care for too much attention that cops would bother me.
Thanks in advance...
Is a cutout going to be too loud for driving around town and should be reserved for the track? I really am not that all impressed with the flowmaster sound. I definitely want something louder, however don't care for too much attention that cops would bother me.
Thanks in advance...
