Engine air intake and 2.25 resonator back with performance muffler.

air intake and 2.25 resonator back with performance muffler.

Its getting done soon, a lot of people told me 10-15 horsepower gain,is that true? what about torque? i want facts from people who have that done or similar,some feedback please.
thanks
BEN

i dont know about 10-15 hp but maybe 5-8 hp with intake and 2.25 inch piping. I am getting resonator back done soon, too.....with a tenzo-r muffler.or maybe the new one from apex-i. What about you?

I think you could get 10-15 out of an intake and 2.25 resonator back...

Thats pretty much what Ive got. I have the TRD intake and the magnaflow car back, which actually replaces the stock resonator, but ups the piping to 2.25, and i think the stock reso. back piping is only 1.75. So that gives you a small gain. I would say you would get closer to 10 HP out of it, but i think 10 is deffinately posible...

You should PM KingKuei, i believe thats the set up he has.

That is the EXACT setup I have. TRD CAI and 2.25" resonator-back exhuast piping (actually, 2.25" to the axle, and then 2.5" from the axle-back) to my gigantic HKS Carbon-Ti Muffler (nearly a 6" tip on that thing with a 3" inlet).

I had it tested on a dynojet at modacar in Livermore, CA. Theire dynojet has rollers on the ground, they run it with the hood open and two large fans blowing cooled air toward the engine (simulates real driving conditions).

Here are the results (btw, I have a 5-speed manual

First Run: 123.53 whp / 120.27 max. torque
Second Run: 127.75 whp / 122.18 max. torque
Third Run: 126.73 whp / 122.44 max. torque
Also, the A/F ratio was just about 14.7, pretty steady at just about stoichiometric.

For comparison, another member of our club (www.ncfour.com) ran his car with just a CAI and no other mods (his was 5-speed manual as well), and he got 112 whp (forgot his torque figure, but definitely not nearly as high as mine). So the exhaust setup alone gives an extra 15hp. On top of that, new headers will probably be able to throw out another 5hp or so. So your total gain of CAI, headers, and exhuast could be anywhere in the 20-30hp range. Not bad...

thats just a tad short of the supercharger

Just think if you added the supercharger with the headers and exhaust... mmmmm me want supercharger. I think exhaust would REALLY help the supercharger because your craming all that air in ur engine, so a better exhaust helps get all that air out. Well im pretty much saying that i think exhaust would show even more power gains with a FI setup then with a NA setup...

Sorry, it may sound stupid but you can put an header with the supercharge ?

It's the CAI that you can install with a supercharge rigth ?

if you ger ur air/fuel ratio to 12.7:1 thats where max power is...so buy the S-AFC from me and go do that

The S/C works off of air going INTO your engine (turbos work on exhaust coming OUT of your engine). Since headers are an exhaust piece, the answer to your question is YES, you can put headers on with a S/C. It will noticeably increase power since the S/C is basically forcing air into your engine. A better exhaust will allow exhaust gases to escape just as quickly rather than get bottled up and rob your engine power.

And also, the CAI is NOT supposed to be installed with S/C. TRD voids the S/C warranty if you put on the CAI. On the other hand, I've seen plenty of people do it with no problems. And as far as I know, the only issue is running too rich and prematurely wearing out the catalytic converter, but this problem can be corrected by using a diff. ECU piggyback than the one TRD supplies, like a UniChip or something.

I don't know what kind of muffler i have,its almost brand new, its off an integra that got totalled, i picked it up at my friends scrapyard for 0$ and its mint, its not a cheap one, anyway is there a way i can find out what kind it is?,I will post pics when i get my digi camera back.

Will Toyota void the warranty if you run a better exhaust though?

PSHHHh. They'll void your warranty for putting a sticker on your car. Blame the sticker for poor aerodynamics, thus increasing strain on the engine, thus leading to the premature breakdown... blah blah blah. Toyota dealerships are not all created equal. Depending on which dealership you go to and how good the reps are, they may try to put much of the blame on you. On the other hand, I've never heard of anyone having any problems with an aftermarket exhaust.

No doubt. You basically have to threaten them with burden of proof. Go figure though, they would make a super charger and a performance muffler and then whine when you do it better. :wink:

no fair.. how come wen we mod our car, we get like 3 HP, but wen a supra does it, or a RX-7, they get like 30 HP off exhaust or intake!

Because they are TURBO'ed... =)

The Supra has a 3.0L 6-cyl. engine even in the non-turbo model. Our engines are 1.8L I-4. That means that our engines displace 0.25L/cylinder, whereas the Supra is displacing twice as much at 0.5L/cylinder. That's why you see so many Supras pushing like 800-1000+whp when they turbocharge. And yes, upgrading an exhaust on a turbo-charged vehicle makes a huge difference in power. Just look at the huge increases on cars like the LanEvo, WRX, RX7 and RX8, Supra Turbo... list goes on.

There's a limit to how much our little 4-cylinders can do. Slap a turbo on there with a good exhaust setup and you'll gain quite a bit as well, just not as much as you would with a Supra.

But hey, my exhaust setup gave an extra 15whp. S/C or turbo will produce even bigger gains with a good exhaust.