Glasspack length??

[Gorlo77]

I'm looking into putting a glasspack between the cat and my Bomz muffler on my 96' SL2 to quiet it down a bit. I was thinkinking of a Cherry Bomb 22" but i dont really know if that will quiet it down a good amount or not. Should i go longer? I'd like it to still sound cooler than stock but not like it is right now where all the non-car enthusiast passengers get annoyed as hell and can't talk every time i accelaerate or get up to 70mph. Also..what sounds/is better? Dynomax Thrush Magnum or Cherry Bomb???

[dream36realms]

the thrush sounds good at 30" with a dynomax turbo muffler

[GTI]

mine is like 25 26 inches around and it quieted it down a lot. Thrush Magnum Glasspack for your reference.

[saturn_06]

go as long as you can [img]{SMILIES_PATH}/wink.gif[/img]

[slowion2]

go as long as you can [img]{SMILIES_PATH}/wink.gif[/img]

[aeroblu22]

+1

and 30" glasspack > 12" + 18" glasspacks

[DarthSaturn06]

Well, it's almost time for me to redo my exhaust.....just bought a thrush magnum 25 inch glasspack today.....but my setup consists of a high flow cat, glasspack, then custom piping, to a magnaflow muffler...and all the inlets and outlets will have 2.25 inch piping, also with an OBX header. My question: Is my backpressure going to be too low? I've heard that 2.25 is about the max i can go, which is fine, but with the minimal performance enhancement i'm doing, is this too much? I don't think it is, but let me know though please.

[slowion2]

every time people say backpressure is good, god kills a tony danza

you don't ever want backpressure, it's a result of restriction. you want velocity, peak of which reached at a useful RPM level.

please do a search, I swear we answer this once a month, there should be a thread or two still around on it.

[brokenheadz2003]

back pressure is good...back pressure is good...back pressure is good...back pressure is good...
i dont like tony danza at all
lol bwahahahahahahahahah [img]{SMILIES_PATH}/icon_twisted.gif[/img]

[DarthSaturn06]

every time people say backpressure is good, god kills a tony danza

you don't ever want backpressure, it's a result of restriction. you want velocity, peak of which reached at a useful RPM level.

please do a search, I swear we answer this once a month, there should be a thread or two still around on it.

Yeah actually i did a search after i posted that....lol...mah bad...but thanks anyways.

[aeroblu22]

every time people say backpressure is good, god kills a tony danza

you don't ever want backpressure, it's a result of restriction. you want velocity, peak of which reached at a useful RPM level.

please do a search, I swear we answer this once a month, there should be a thread or two still around on it.

perhaps a sticky about backpressure would be in order?

[lilcraigford]

I was always under the impression that on a n/a application some amount of backpressure was good, and with the varied exhaust diameter/varied backpressure you could "tune" your powerband. For example, my Dad runs a 2" exhaust, I run a 2 1/4". His car has alot more low end (2500-3000), where as mine will start to pull more mid-rance (3500-4000). On the other hand, I suppose my car breaths better. It pulls harder, and will out run my Dads car. His seems to rev quickly, but not pull as hard... Both cars have similar modifications.

Me: AEM WAI
Him: Modified OEM Intake w/K&N Filer

Me: OBX Header
Him: OEM Header

Me: Thermal Catback
Him: SPS Catback

Us: Catco High-Flow Cat
Us: Taper-Bored Throttle Body
Us: NGK V-Power Spark Plugs

Somebody enlighten me?