after my researching today, i think that i have finally completed my setup.
Pacesetter 4-2-1 Header
This Cat
and 2.25''
MANDREL BENT Pipes
if i'm missing anything, or there's just a better suggestion lemme know. otherwise, this is what i'm going with.
Not to sure about that brand... Never heard of it. We have a universal magnaflow which 100's have used and works well.
-Aaron
www.TurboTechRacing.com
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Pacesetter doesnt make a 4-2-1 header...
its an old concept. time for something new to take the reigns. - Z yaaaa
yea, i found it through some older threads (from like 05, i think?). it had some good reviews from a couple guys on here so im giving it a shot.
...unless you'll price match that magnaflow for me aaron
doh...
4-1...
even still, is this a suitable setup or am i leaving anything out...?
buz-buz wrote:after my researching today, i think that i have finally completed my setup.
Pacesetter 4-2-1 Header
This Cat
and 2.25'' MANDREL BENT Pipes
if i'm missing anything, or there's just a better suggestion lemme know. otherwise, this is what i'm going with.
i run the same exact cat. plan on never an issue, not even a spot of rust. the crx is going to be getting one as well.
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Depends on what you want out of the car. If a supercharger is a real option for you then i'd atleast run a Pacesetter LSJ header and 2.5" pipe.
its an old concept. time for something new to take the reigns. - Z yaaaa
i'm thinking hahn stage 1 later on, but i'm not ready for that yet. i have ALOT more research to do. this is just for me to grab a few extra hp along the way.
rich, that is AWESOME to hear.
If you are thinking about going turbo down the road then I would recommend 2.5 inch exhaust atleast. It will NOT hurt you N/A. I mean why pay to do exhaust twice....
this is where i'm having trouble...
and aaron, nice try. i already bought a header from you last week.
ok, back to the exhaust. like i said i'm gonna go turbo a little further down the road, so i figured why not just retain the backpressure in the meantime?
but i see your argument, and i have just taken this advice. about half an hour ago i had ordered the 2.25" cat, now i just went back and ordered the 2.5"
thanks for the input guys. hopefully this will all be on by next tues.
buz-buz wrote:so i figured why not just retain the backpressure in the meantime?
because backpressure is the worst thing you could have in a performance oriented exhaust.
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2.5 isn't going to hurt your n/a performance, and if your'e boosting later on you need 2.5.
end of story.
yea, i get that about boost needing more flow. i guess i'm more stuck on backpressure being evil??
guess i need to research some more...
If you have back pressure it means you have resistance in the exhaust. It resists the flow of exhaust leaving the engine. To make power you want to the air to easily move threw the engine.
its an old concept. time for something new to take the reigns. - Z yaaaa
Yea, I understood that. But I was always under the impression that a little back pressure meant better lower end torque. But I've been reading up on it for a while, and understand it more clearly now.
Let us know how you like the setup.. im thinking of something very similar to that
AHHHHHHHHHHH. Back pressure does not equal velocity. A well designed exhaust has no back pressure and has high flow but still maintains good velocity. Velocity is what makes torque down low, not back pressure.
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Leafy wrote:\Velocity is what makes torque down low, not back pressure.
This man tells the truth.
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buz-buz wrote:Yea, I understood that. But I was always under the impression that a little back pressure meant better lower end torque. But I've been reading up on it for a while, and understand it more clearly now.
I have a full 3" exhaust and I have no lack of down low torque, at the track I spun off the line every time. Granted my intake manifold completely chokes my top end so my times suck. But the point is you can have down low torque with larger exhaust.
Leafy wrote:AHHHHHHHHHHH. Back pressure does not equal velocity. A well designed exhaust has no back pressure and has high flow but still maintains good velocity. Velocity is what makes torque down low, not back pressure.
What are some things that would help maintain a good velocity?
Its simple smaller pipe has a higher velocity, larger pipe has a higher flow area. You just need to calculate your air flow though your engine at the lowest rpm that matters to you as well as red line then then pick the exhaust size that gives you the best compromise between velocity and flow. Theres tons of information out there and I cant remember it off the top of my head. Cat's and chambered mufflers hurt velocity so do random large pockets of pipe. That last part means that a gutted cat is probably hurting your exhaust flow, at least compared to a straight pipe.
1994 Saturn SL2 Home Coming Edition: backup car
2002 Chevy Cavalier LS Sport Coupe: In a Junk Yard
1995 Mazda Miata R-package Class=STR
Sponsored by:
Kronos Performance
WPI Class of '12 Mechanical Engineering
WPI SAE Risk and Sustainability Management Officer
