Are exhaust cutouts worth it on a turbo car?
07-11-2008, 11:05 AM
#1
On The Tree
Thread Starter
iTrader: (3)
Join Date: Jan 2005
Location: Boynton Beach, FL
Posts: 180
Likes: 0
Received 0 Likes
on
0 Posts
Are exhaust cutouts worth it on a turbo car? Any guys running exhaust cutouts? if so how much power did you gain from them? Also are the QTP cut outs worth $400 i thought that was a little pricey.
i was just thinking on going with Flowtech cut outs.
i was just thinking on going with Flowtech cut outs.
07-11-2008, 11:26 AM
#2
i got them for the sound alone. my car sounds like jet going down the street, and i like that. i just bought regular cutouts for now. $45 for the pair. depending on the rest of your exhaust, that will determine how much the cutouts will help with power.
07-11-2008, 11:44 AM
#4
Running through the 3" catback, my car will only make 12-13 lbs. With the 2 3" cutouts open ( 4" dp ) its all good. I've got QTP's on mine and they haven't quit yet. Just a flip of a swith and they're open.
07-11-2008, 07:02 PM
#7
BE CAREFUL!!!
Depending on how good your exhaust is, you may wind up with a blown motor. I did this one time and it gained 10+ psi boost due to removing backpressure from the turbine.
That said, I hate cutouts. I hate complication, more moving parts, and most of all, I hate having to flip a switch to get MY power. If you think you need a cutout, then you really just need a better/bigger exhaust system. With my 3.5" exhaust with a Magnaflow muffler, I gain little to nothing by removing it.
Mike
Depending on how good your exhaust is, you may wind up with a blown motor. I did this one time and it gained 10+ psi boost due to removing backpressure from the turbine.
That said, I hate cutouts. I hate complication, more moving parts, and most of all, I hate having to flip a switch to get MY power. If you think you need a cutout, then you really just need a better/bigger exhaust system. With my 3.5" exhaust with a Magnaflow muffler, I gain little to nothing by removing it.
Mike
Trending Topics
07-12-2008, 10:27 AM
#8
On The Tree
Thread Starter
iTrader: (3)
Join Date: Jan 2005
Location: Boynton Beach, FL
Posts: 180
Likes: 0
Received 0 Likes
on
0 Posts
well my car now has the 3" hooker y pipe which is bolted right up to the aps down pipes and from there back no cats and a corsa 3" exhaust. If i do the cutouts i was thinking of welding them right at the end of the Aps downpipes off the turbos i think the car will gain some pretty good power. One thing i don't want it to do though is boost creep
07-12-2008, 10:53 AM
#11
Keep in mind that turbo cars almost always gain boost when you open the cutout. So, when someone says they gained a 1/2 second, a fair amount of it probably came from a rise in boost.
Mike
Mike
07-12-2008, 10:59 AM
#12
.... BE CAREFUL!!!
Depending on how good your exhaust is, you may wind up with a blown motor. I did this one time and it gained 10+ psi boost due to removing backpressure from the turbine.
That said, I hate cutouts. I hate complication, more moving parts, and most of all, I hate having to flip a switch to get MY power. If you think you need a cutout, then you really just need a better/bigger exhaust system. With my 3.5" exhaust with a Magnaflow muffler, I gain little to nothing by removing it.
Mike
Depending on how good your exhaust is, you may wind up with a blown motor. I did this one time and it gained 10+ psi boost due to removing backpressure from the turbine.
That said, I hate cutouts. I hate complication, more moving parts, and most of all, I hate having to flip a switch to get MY power. If you think you need a cutout, then you really just need a better/bigger exhaust system. With my 3.5" exhaust with a Magnaflow muffler, I gain little to nothing by removing it.
Mike
07-12-2008, 11:38 AM
#13
I have had a QTP and DMH and now have STREET PRO. The qtp rattled when closed and broke after I sold it . The dmh worked good but rattled when closed. The street pro is very pricey but doesn't rattle when closed and has been working perfectly. I am very happy with it and likely buy another one for my 96z28.
DMH and QTP might have redesigned their products I had them quite a few years back. DMH offered to fix mine but sold it rather than going thru hassle of shipping it back, a bit of pain since I am up in Canada.
Cutout is high on my list of favorite mod.You can have your car nice and quiet when they are closed,open them up a little bit or a lot and get the sound where you like it. I like to put the fear of god into hondas sometimes at the lights.Its great fun!
For some reason in a few of my NA tests the car seems slower with the cutout not sure why. It should really help though on a turbo car epecially one like mine that has 3 inch single exhaust. For now going to be running single cutout only in intermediate pipe.
DMH and QTP might have redesigned their products I had them quite a few years back. DMH offered to fix mine but sold it rather than going thru hassle of shipping it back, a bit of pain since I am up in Canada.
Cutout is high on my list of favorite mod.You can have your car nice and quiet when they are closed,open them up a little bit or a lot and get the sound where you like it. I like to put the fear of god into hondas sometimes at the lights.Its great fun!
For some reason in a few of my NA tests the car seems slower with the cutout not sure why. It should really help though on a turbo car epecially one like mine that has 3 inch single exhaust. For now going to be running single cutout only in intermediate pipe.
07-12-2008, 01:23 PM
#16
TECH Enthusiast
iTrader: (6)
Join Date: Jul 2002
Location: California
Posts: 668
Likes: 0
Received 0 Likes
on
0 Posts
How can a car pick up more boost with a wastegate and boost control valve in the equation? I thought they would limit the amount of boos the car will make.
07-12-2008, 03:20 PM
#19
Mike
