Engine Performance assy from header to tail pipe

I'd grab this one right away, but to my dispair, I just got myself a new evap canister for about 350 bux and cost me about 120 bux to get that replaced. Dang!

Performance assy from header to tail pipe

Its official. Finally decided to go with a new engine for my 01 Prizm since its guzzling oil beyond control. Will do this in a couple of months. I'm still looking for the ELP CAI, if I don't find a good one by the time I get the new engine, I'll go with Injen SRI. With the new intake, I've also decided to go with a performance header to tail pipe assembly. I know its hard to find a genuine Forza header, but there are a couple of guys selling OBX steel headers (plural snese lol). If I find a Forza header, will go with that else the OBX steel. I already put a brand new Magnaflow Cat, so will not change that. Need recommendations for the rest of the exhaust system....

I've put off the body kit for now, will be looking for a good/cheaper rear bumper for the Prizm. Andy's is nice, but after shipping costs, I really don't think it would be worth. For the front and sides, Bomber is for sure, but will do that once I have a good deal on the rear. Also started looking for a full tanny at junk yards, but I know this will be the toughest part. Another question, will upgrading to a 5 speed manual tranny require reprogramming and rewiring the ECU?

ha, you must have missed my for sale thread for the CAI..

Its not hard at all. A real Forza header. The Forza for the 8th gen is just a rebranded OBX but the real OBX headers for sale are for 03+ corollas so only the Forza fits. I got it off this seller on ebay. For 200 you can't get any better than that.
http://cgi.ebay.com/ebaymotors/OBX-...sspagenameZWDVW

Sounds great man.
If you're gonna do auto to manual swap, the 5 speed tranny from 00+ celica GT fits no problem. And you can use the AUTO 00+ celica GT ECU as well, the pinout fit 100%, and the tuning is more aggressive than the corolla one.

Anyone second the ECU part?

i have the forza header. it didn't make any difference at all in exhaust loudness. you'll be fine. get a reputable muffler, and if it's too loud for your tastes, get a resonator. bigger means louder. just keep that in mind. and the intake... all it makes is a big sucking sound with a "TH" (say "thuuuhh" real fast as you inhale) when you punch the gas pedal.

as far as being legal, you're putting yourself at risk. cops can be whatever they want to be. they can pretend they don't know what you're doing to your car, or they can be strict or on their period, and give you a ticket for the sake of being on their time of the month. i mean, have the intake, muffler, and headers... but make sure you're chill on the streets. if you attract attention like a ditzy drama high schooler, you'll get pulled over.

I've been reading about performance stuff and I found that putting in a performance intake will make the car louder, top of that new perf. header will add to it and so will the muffler. How to mix and match stuff from intake to muffler without a significant increase in the sound (staying legal,..... I mean)?

as far as sound, you shouldn't worry about your intake's loudness. worry about the muffler's loudness instead.

i hear the forza header just makes your exhaust note a deeper growl which i'm all for. do your research on the muffler. try to look for sound clips online and read reviews about it. i didn't even do that since i just trusted the trd muffler to be decent...i got lucky.

the trd muffler is nice... i haven't heard it on corollas but i've heard them on the scions. they're pretty cool. but that's just an axle back only (correct me if i'm wrong). so if you're going to get bigger piping change the cat. and put headers, prepare for a louder trd exhaust muffler.<br />
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as far as the forza header, i say that all cars are different. it may be louder or be the same on different cars.

I had only a slight barely noticeable sound difference.

yeah i got a cat-back exhaust system with the trd muffler

Has anyone compared the TRD muffler to a straight through muffler, such as Magnaflow? I would think the straight through would give more gains, however it wouldn't look as good. hehe

I ordered the Forza header with the logo on it! Hope it ships in soon. Thanx rollatuner110 for pointing me to the vendor. Still looking for suggestions for the rest of the exhaust system. What to go with and what brands. I'm looking for performance gains (mileage and power) yet quiet run. I'm also looking for a CAI. Will also do the bypass coz hydrolock on a new engine would kill me before it would kill the eng....lol

For the rest of the exhaust system, I would get an exhaust shop to custom weld a catback system with a straight through magnaflow muffler. Its cheap and effective. There's no real need for a bypass valve unless you constantly experience flash floods or drive through 1 foot puddles going 50 mph. LOL

dude, prepare to shell out the cash in the near future as far as exhaust systems are concerned. i used to drive an ae92 with headers, and catback. that car was loud as heck, and i was never satisfied with the exhaust tone or volume. i've had 3 sound disturbance tickets from it. but back to you... are you going for looks/show? or JUST performance? i know you want a quite sound, but consider one or the other, and maybe we can wind down your options. and if the muffler you get isn't what you want, well, you know that i've been there, and i've shelled out the cash to get another muffler/resonator put on.

personally, i DO NOT recommend you get a flowmaster AT ALL. i think they're great for v6's large motors and american cars. if you want a quieter tone, don't get an exhaust tubing too large in diameter. from what i've heard, large diameter exhaust tubing is for forced induction setups. if your exhaust is too loud, you might want an exhaust resonator instead of gutting out your current muffler. get several opinions from differnet muffler shops as to what is the most free flowing resonator.

from my experiences, i've never been able to get rid of that ricey buzzy sound. i still have it on my car. it used to be real bad when i had my flowmaster, now i've switched to magnaflow, and it's still buzzy during launches. it's a 4 banger thing. if you had forced induction, i think you'd get a totally different sound comapred to minor mod stuff or N/A tuned engines. ever noticed the deep grumbling sound of a lancer evo or subaru wrx? in as much as i love that sound, i can't have it becasue of the forced induction (turbo setup). i've noticed that turbo charged civics eclipses nissans etc, have that deep grumbling sound as well. but when compared to an N/A stock motor or 4 bagner compact car with just a muffler/headers/catback/intake (just minor mods), they all have that buzzy sound. those are just my observations.

one more thing you want to consider is interior noise. i find it embarassing when i have friends in my car. the exhaust get's too loud and i can't hear what my freind(s) is/are saying. it doesn't matter how quiet your exhasut is from the outside, i'm just saying it MAY affect interior cabin noise. honestly, sometimes i wish i didn't have a modified exhaust for the sake of my comfort and the passengers.

if you want looks, and no exhasut note at all, just get a nice muffler tip! those are usually clamp-on.

i hope i've helped a little. getting an exhasut system is not just getting an exhasut system. i think you need to be informed of all the minor details before you shell out dollars on possibly something you might not be happy with 400 miles later on something you'll get 5-10 horespower. and i don't think anyone can feel 5-10 horses. if so, your mind is playing games with you. and the only way to check is to dyno your car after you've modded.



1. comfort: yours and your passengers
2. looks? or performance?
3. interior noise and exterior noise

if i've forgotten anything that comes with an exhaust system, someone, please feel free to put in your 2 cents!


dang this is long

You can get rid of the buzzing sound by using 1 or 2 resonators. The main cause of the buzzing is due to retaining stock piping and having an aftermarket muffler. Its even worse with a rice can muffler. The more restrictive the muffler is, such as baffled or glass packed mufflers will increase the possibility of the buzzing. You want to go with a straight through design, such as Magnaflow. For my setup I have 2.5 inch catback piping with a Magnaflow resonator and a Magnaflow muffler. Interior noise isn't that loud and I have that deep grumbling sound that you've been talking about. It grumbles more and even deeper since my header. The main culprit here is the choice of muffler. Go with straight through. It also gives the most performance and is cost effective too.

Exactly what I'm looking for.

hey rainbow star do you know anyone who has done this?

Ppl did it back in 2003 or 04 or so. You can do a search here and you should still be able to find some info about it.
Vamp did it too, but he got an auto 01 rolla, the auto celica GT ECU couldn't control the roll's auto tranny really well, espeically the "R". That's why you need to have auto-&gt;manual convertion in order to make the celica ECU works.

i might do a tranny swap 2008 summer...

I haven't before. I'll post some when I get a chance to get home and bust out the camera.

I bought the Forza header from this vendor, but I still haven't recieved it yet. He said he got my payment and will be shipping soon, but I still don't have it and he is no longer replying to emails. I'm gonna wait a couple days and see what I can do.....

Does anybody have this header?
http://cgi.ebay.ca/CHROME-TOYOTA-CO...1QQcmdZViewItem
I'm more interested in this one since the pipes and collector are larger.