Joepro

Sup guys. Well, they finally did it, put in place a visual emissions inspection.... So that screws over my plan to remove some things. So I would like some opinions on a new exhaust set up. (was going strait pipe) I currently have all stock components to the end of the main cat (all punched of course) then 2.25 id pipe back to the dumper. I have been throwing around the idea of getting a header (probably pacesetter, I know, but im in college) into a high flow catco or equivalent, followed by 3 inch pipe back to the dumper. Is 3 inch too big? Should I go with 2.5 id? Also does anyone know if a high-flow cat has enough backpressure to open the 6 ports? I currently have a "Lowes Home Improvement" setup to open the 6 ports. Thanks for any input. Joe.

rotarygod

iTrader: (1)

The Pacesetter header is just fine. You'll notice a nice gain. I've had both it and the Racing Beat headers. Anyone that tells you they aren't worth the money have obviously never used one and aren't qualified to voice an opinion. It's cheap and it works. Yes the Racing Beat is better. It is heavier and more expensive too. It won't give you a noticable amount of greater power over the Pacesetter. If money is no object, get the Racing Beat. If you do need to scrounge for cash, the Pacesetter is fine.

I'd use a 2 1/2" pipe all the way to the muffler. 3" is too big for a street driven stock port engine. If you go too big, power will decrease. I have aBonez high flow cat. My auxillary ports still open off of exhaust pressure.

rs_1101

on an idle rev, mine open at like 6k... with bonez, stock header and 2.5" piping straight out the back.

on na 2.5 is pretty optimal, 2.25 would be more streetable. 3" is huuuuge. unless you have a turbo.

mazdadude

iTrader: (2)

Hey Joepro, I just bought some OttoRacing Mufflers, 2.5 inch inlet 4 inch outlet, and i just ordered a bonez race pipe. But when i installed my mufflers, i noticed a slight decrease in low end, but the high end was a little better. I also asked the guy at autornd.com about his GPsports single and dual exhaust. They are both 3 inch from the cat back. He said that it was way too large for an n/a and I would loose significant low end. I say go 2.5 max from the header back. BTW the pacesetter is a good header. sorry to say but i dont think the catco can hold up to the rotaries heat, I say invest in a bonez superflo.

White_FC

Just curios as to why you think that a larger diamter pipe after the tuned section (header) of the exhaust will give you less power?

Joepro

I thought 3 was too big also, but my friend said I should use 3 inch. He also has a 2nd gen. I was orginally going to go with 2.5, but I though I ask you guys first. Anyone know about the univerals cat/heat deal. I had though about it, but for 30 bucks(the catco), I dont care if it toasted in a year. I will probably punch it anyway, since it just a visual inspection.

Joepro

For guys who had the pacesetter....Someone told me you have to drill out the mounting hole for it to fit correctly? Is this true? Its no big deal, just curious so I know to plan ahead of time.

pengarufoo

I've actually grown to dislike the racing beat header, I have not seen the pacesetter one but there are some problems with the racing beat unit. The rb header is heavy, the whole rb exhaust system is quite heavy as it's thick wall steel tubing. The worse thing about the rb header though is the design, straight off your exhaust ports it is at an angle to the ports, it does not start out straight from the ports as it should then bend smoothly around towards the collector. I do however like the collector design on the header, it is probably the best part of it.

If the pacesetter starts out straight at the ports, has mandrel bends and a similar length & inner diameter as the rb header to the collector I would expect better performance, as long as the collector design is reasonable.

mazdadude

iTrader: (2)

if you look in any pacesetter header ad, they say that some grinding and fabrication will have to be done to be installed. They say to get installed "proffesionally"

Joepro

so who has installed the pacesetter header?

Joepro

Anyone? or did no one istall them thesmselfs( I find this hard to believe) we are all do-it-ourselfer's

RotaryEvolution

iTrader: (30)

3" is too big on an n/a, trust us on that.



as for the pacesetter manifold, i haven't seen anyone claim they have tried it but alot of people shoot it down as soon as it is mentioned. i hate people who follow like sheep, RB this or that... exhaust is a fairly simple concept and not only RB makes decent exhaust, the header though is about the most critical point of the whole exhaust because of the temperatures generated there and the flow path it must follow, aside from that it isn't tough to make a home made system that is comparable in flow to any exhaust system out there on the market as long as you have the bends done on a mandrel, you can have a shop do the bends for you.

rotarygod

iTrader: (1)

I've tried it. It's less average power for street use. It may work fine over 6K but below this it sucks. Average power and not peak power is what makes you faster.

White_FC

Hmm ok...
I've had slightly different experiences that's all.


How noticable was your loss in power?