Advice on Cutout location
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Launching!
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Advice on Cutout location Hey guys, I was just curious I'm looking at getting the TSP Rumbler with a Sweet Thunder in the I pipe. My question is where should I place a cutout??? I mean, if you have a muffler in the rear end of the car and you place a cutout before the muffler, I can see how a cutout would make it louder in that situation. But, with a Sweet Thunder or any bullet type muffler in the I pipe section, where would you place the cutout to achieve maximum performance/LOUDNESS? haha, thanks guys!
I see, In my opinion I would not put a cutout on stock manifolds, but that is just me
not exactly sure how that would sound.... My advise is save and buy headers first, hen worry about the cutout
not exactly sure how that would sound.... My advise is save and buy headers first, hen worry about the cutout
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From: England
Originally Posted by 98Trans
Hey guys, I was just curious I'm looking at getting the TSP Rumbler with a Sweet Thunder in the I pipe. My question is where should I place a cutout??? I mean, if you have a muffler in the rear end of the car and you place a cutout before the muffler, I can see how a cutout would make it louder in that situation. But, with a Sweet Thunder or any bullet type muffler in the I pipe section, where would you place the cutout to achieve maximum performance/LOUDNESS? haha, thanks guys!
).A good catback will remove all the restriction from the muffler and the tubing on at least a FULL bolt on car and even a cam/bolt on car. This means that having a cutout will offer either nothing or vry little in the way of improved flow rate, which means little or no gain in HP. There should be a gain in noise (which is some people's prime aim), but that'll be about it.
Currently your restriction lies in the headers/CATS/mid pipe and it is not feasible to use a cutout to by pass all of them.
As for actually using cutouts, well you usually have 2 options:
1. single cutout
2. dual cutouts
If you have dual cutout's then placing them between the engine and CATS will allow you to bypass them (improved flow = more HP), however it also bypasses the merge collector on the Y pipe so you will miss out on any scavenging. This may have a greater drop in HP over that gained by by-passing the CATS.
IMO - Unless you are fitting the cutout 100% for noise purposes I would advise using the money to save up and get some other mod such as long tube headers.
Thread Starter
Launching!
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Damn, I keep running into problems with exhaust! The problem is I need to keep my cats and manifold for CA smog laws. So, I basically need a LOUD cat-back. GMMG is just too pricey and not loud enough in my opinion. The LM I'm worried about being too raspy and backfiring. The TSP Rumbler is cheap and no rasp.....but again, worried about it not being loud enough. The only reason for the cutout would be to make it LOUD.
Thanks for all the input guys! What you guys suggest? I've heard about the Bassani duals for stock manifolds/cats....but from what I heard of it, I dont care for it at all. How can I make this thing scream (in a good way) with cats and a manifold???
Thanks for all the input guys! What you guys suggest? I've heard about the Bassani duals for stock manifolds/cats....but from what I heard of it, I dont care for it at all. How can I make this thing scream (in a good way) with cats and a manifold???
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Originally Posted by 300bhp/ton
With a good cat back the best place to put a cut out is on the shelf (IMO ).
A good catback will remove all the restriction from the muffler and the tubing on at least a FULL bolt on car and even a cam/bolt on car. This means that having a cutout will offer either nothing or vry little in the way of improved flow rate, which means little or no gain in HP. There should be a gain in noise (which is some people's prime aim), but that'll be about it.
Currently your restriction lies in the headers/CATS/mid pipe and it is not feasible to use a cutout to by pass all of them.
As for actually using cutouts, well you usually have 2 options:
1. single cutout
2. dual cutouts
If you have dual cutout's then placing them between the engine and CATS will allow you to bypass them (improved flow = more HP), however it also bypasses the merge collector on the Y pipe so you will miss out on any scavenging. This may have a greater drop in HP over that gained by by-passing the CATS.
IMO - Unless you are fitting the cutout 100% for noise purposes I would advise using the money to save up and get some other mod such as long tube headers.
).A good catback will remove all the restriction from the muffler and the tubing on at least a FULL bolt on car and even a cam/bolt on car. This means that having a cutout will offer either nothing or vry little in the way of improved flow rate, which means little or no gain in HP. There should be a gain in noise (which is some people's prime aim), but that'll be about it.
Currently your restriction lies in the headers/CATS/mid pipe and it is not feasible to use a cutout to by pass all of them.
As for actually using cutouts, well you usually have 2 options:
1. single cutout
2. dual cutouts
If you have dual cutout's then placing them between the engine and CATS will allow you to bypass them (improved flow = more HP), however it also bypasses the merge collector on the Y pipe so you will miss out on any scavenging. This may have a greater drop in HP over that gained by by-passing the CATS.
IMO - Unless you are fitting the cutout 100% for noise purposes I would advise using the money to save up and get some other mod such as long tube headers.
Any to answer the orginal question you can place the cutout before the resonator on the rumble. I might be tight but i have not seen a rumbler first hand.
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Verdad Gallardo TECH Addict
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From: England
Originally Posted by Order 66
Any proof to your statment, because
In simple terms if your exhuast flow sufficently for the BHP being produced then a decrease in restriction will yield no power gain. You may affect the exhasut pressure wave which can produce more power, but then again a cutout may have a nagative affect on it also.
So yes there is lots and lots of proof and evidence, but it's taken me 6 months of researching and reading, however if you have a spare 30mins to an hour I'm sure you can find some useful info.
Originally Posted by Order 66
i have seen many many times a cutout will make more power than catbacks. It has been proven. Why do you think they are so popular. Now on some catbacks the gains might not be tremendous but still gain a couple of hp. The problem is you cant get a high flowing catback with out the noise. That is why i like my cutout. Loud when i want and quiet when i want.
Any to answer the orginal question you can place the cutout before the resonator on the rumble. I might be tight but i have not seen a rumbler first hand.
Any to answer the orginal question you can place the cutout before the resonator on the rumble. I might be tight but i have not seen a rumbler first hand.
Last edited by 300bhp/ton; Jan 24, 2006 at 05:11 AM.
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From: England
Originally Posted by 98Trans
Has anyone ran a setup like this before??? Cutout on a catback with stock cats/manifold??? ...I wonder how it would sound
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From: England
Originally Posted by 98Trans
Damn, I keep running into problems with exhaust! The problem is I need to keep my cats and manifold for CA smog laws. So, I basically need a LOUD cat-back. GMMG is just too pricey and not loud enough in my opinion. The LM I'm worried about being too raspy and backfiring. The TSP Rumbler is cheap and no rasp.....but again, worried about it not being loud enough. The only reason for the cutout would be to make it LOUD.
Thanks for all the input guys! What you guys suggest? I've heard about the Bassani duals for stock manifolds/cats....but from what I heard of it, I dont care for it at all. How can I make this thing scream (in a good way) with cats and a manifold???
Thanks for all the input guys! What you guys suggest? I've heard about the Bassani duals for stock manifolds/cats....but from what I heard of it, I dont care for it at all. How can I make this thing scream (in a good way) with cats and a manifold???
I know if you're in CA it's a pain. But there are still options out there just depends on how lucky you feel. A set of Long Tube headers with a CATTED Y pipe will keep you emissions friendly (although the location of the CATS will still be illegal).
Mac Mids maybe another option with a Catted Y pipe. You'll want to keep all the emisisons stuff such as EGR and AIR as they don't cost any HP and will keep you legal.
Then for loud exhaust yes GMMG is good and 2nd hand isn't too expensive. The Rumbler is a good price but it's only mild steel I beleive (not really an issue in CA I guess). But personally I'm gonna go for the Loudmouth. With CATS it shouldn't be too raspy and it will be loud. If I find it's not quit the sound I'm after I'm going to turn it into a Magnamouth using muffler PART # 14619 $150
http://www.magnaflow.com/02product/s...ne=main&id=660
As this is only a 3" catback it will be slightly restrctive on a bolt on/cam car if it's anywhere near 400rwhp. But from what I've seen I would guess at only 8-12rwhp over a 2.5" dual setup (but I can live with that).
Have you tried www.ls1sounds.com yet? Personally I like the sound of the LM clips on there, and only a couple of them sound raspy to me.
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Launching!
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Hey, thanks for the posts guys! I have tried ls1sounds.com, it has its pros and cons. I was going to go LM just to be LOUD.....but with all the negative comments, I was afraid of spending $400 for a raspy exhaust. Especially when you can get the Rumbler for $200 and no rasp. But, its not very loud at all with the Dynomax bullet. So, I was planning on a Sweet Thunder in the I pipe...but I've heard it makes a weird suction-like sound. So I'm thinking maybe a Stainless Works Chambered muffler might be better. ....Then again, I'd be worried about being loud. So I guess I'll keep giving it some thought. I have heard great things about the MAGNAMOUTH. Have you heard it before??? I wonder if its more quiet with the Magnaflow, or just as loud....but refined. Thats what I'd hope for.
