Most HP IN CATBACK
Most HP IN CATBACK I know this must have been covered before. Which catback gives you the most HP gains? Most people seem to think the Magnaflow? I read a post that said they had very good flow. I have stock SS system on my 2000. What about LMII for weight savings and HP? I run this as a street/strip car and drive to work with it a couple of days a week 5 miles. Any recommendations appreciated.
That true dual system looks tight, very custom. The LMII with low restriction and ease of install and weight savings seems like the way to go. Am i right or wrong? It seems like all the systems are 4-500 dollars unless you get into the high end Borla's.
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I want the most HP with good sound also. I am not too concerned about the noise as i do not drive it all the time on the street. I am looking for tenths now. I am putting gears and a converter next week in that will put me well in the Heavy class (8.69 or better) IHRA in the 1/8th. If i can pick up a couple of more with an exaust system i will do it. Thankyou
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Teching In
Joined: Apr 2006
Posts: 37
Likes: 3
From: Modesto, CA
i have seen a study on this question but forgot the site, they tested all the known catback systems for f-bodies witch consisted of about 10 or 12 different companies and the highest flowing system was slp lm, im sure a lm2 is the same but i think depending on the mods done to your car, i the power difference will be mininal, all i remember is that slp lm was the highest flowing and flowmaster was the worst, if your car is stock and you plan to keep it that way i would go for sound.
Launching!
Joined: May 2002
Posts: 299
Likes: 0
From: Burnsville, Minnesota.
I made great power gains with an SLP Loudmouth. However, if you ever get LT's or anything the sound is way to loud (trust me).
I think the Hooker is a decent system as well. Every car is different and unless you get a custom dual setup, most cat-backs will perform the same performance wise.
I think the Hooker is a decent system as well. Every car is different and unless you get a custom dual setup, most cat-backs will perform the same performance wise.
Thanks for the advice. The only mods i have now are Pulley/LID/FILTER/TB BYPASS/LOW TEMP THERM/SLP DIABLO TUNE/REAR END COVER/GIRDLE BOGART/Mickey THOMPSON ET STREETS. The 3:73 gears and 3600 Converter are going in next week to help with the 2 inch height change with the new tires. I am running 8.50 now with the street tires. Hopefully high 7's with the gears/converter and tires. So now i am looking to do my exhaust next.
TECH Regular
Joined: Jan 2005
Posts: 411
Likes: 0
You cant go wrong with a custom dual setup imo.. If you go LM and decide to do headers later on, most systems sound raspy and just sound like sh*t... have you looked into a cut-out.. those will give you noticeable gains as well as a little bit of sound lol... and theyre pretty cheap ;-)
Yes i am thinking of just going with manual cutouts also. I've been reading the posts about them but i still cannot figure out the best place to put them, before the Y-pipe, I pipe 1 cutout, under the rear seat 2 cutouts? I'll have to take a look under my car later and compare. I just thought with a nice catback it would save some work.
TECH Apprentice
Joined: Dec 2004
Posts: 309
Likes: 0
From: Evansville, IN
If you see any tangible gains from a catback then you are doing pretty good. Unless you're going to make big power don't buy a catback for its performance, but for the sound. Moreover, if you are making big power with a catback you would probably end up running a cutout anyway.
Banned
Joined: Apr 2006
Posts: 1,875
Likes: 1
From: Naperville, IL
Originally Posted by JohnnyZ28
I made great power gains with an SLP Loudmouth. However, if you ever get LT's or anything the sound is way to loud (trust me).
I have LT's, ORY, and LM basicly, and I ordered a spintech 3" in, 2 1/2" dual out muffler to fab into the stock location (which I'm currently waiting on). It's just too much, especially around 2500 rpm. I was attracted to the light weight, and the great flow of a single bullet.
