Ive heard of this exhaust wrap that you wrap you exhaust with and it results in faster exhaust escape and better power by preventing the exhaust from cooling down by the outside air, i dont know if this realy works so im wondering if anybody evey tried it and has some feedback.
Also im thinking of instaling a cold air intake, and i heard that there are different type of intakes, ones that increase torque and ones that increase horsepower, witch brand and type is better for my 2008 Corolla S manual
In my understanding, the exhaust wrap may have two benefits. First, the one you mentioned. Secondly, less of that heat escapes into the engine compartment, keeping it cooler. That said, you won't notice either benefit in a stock or near-stock Corolla. I think you'd have to be running 5 pounds of boost with full headers and all that stuff to notice any difference.
Your stock intake already is a "cold air intake". Very little reason to change. If someone can show chassis dyno results of proven gains with one, that's one thing. But that evidence is often hard to come by. In other words, if you want to do an aftermarket intake for noise, do it. But I wouldn't do it for power...there are better ways to spend $150.
The exhaust wrap is also a quick way to rust out your header/exhaust manifold.
It tends to keep moisture nice and close to the whatever it is wrapped around.
my air intake is ribbed on the inside and sharply curves two times, i was told that the ribs are for slowing down the air to reduce noise, i though maybe a aftermarket one thats not ribbed would give me some power gain.
and if there is a better way to spen 150$, please tell me how.
The old school header wrap trick...huh
I did that trick on my Honda Civic looooooong time ago. I wrapped the entire cat-back to the muffler. Before the wrap, I prep the entire cat-back and muffler with some pre-heat paint (3x). I didn't notice any difference, BUT I did notice when the weather was rainy, wet, or snowy....... I got some SERIOUS smoke......
IMO, its just a waste of time. if you haven't done a throttle body clean in a while, you'd probably feel the effects of a clean throttle body more than a heat wrapped exhaust. and if you want power, forget about the heat wrap and invest in a 2.25 or 2.5 inch exhaust. secondly, i'd like to know what cold air you are running. i have no idea why it would be smart to slow down the air going through a cold air intake. that's one of the disadvantages of a cold air compared to a short ram, its that air doesnt flow as fast to the engine in a cold air, compared to a short ram.
and if there is a better way to spen 150$, please tell me how.
On a quality muffler/axle-back exhaust. Okay, it may run you $250 or something, but either way, that money will be better spent on opening up the exhaust than with a different intake, in my opinion.
You are right that the stock intake has lots of twists and turns. See the other thread about "$60 CAI" to see what "rdkill" and I have done about that ("rdkill" gets the credit for the idea). If you leave the filter alone, it's about $10's worth of parts, and you're getting the coldest air possible to the engine. Remember that a 4" chrome intake pipe doesn't do anything beneficial when you still have the stock throttle body and stock muffler on there. Those are more of a restriction than anything else. There's no reason to go super-big. The 2" piping is sufficient for our little engines (at least as long as the stock TB is on there).
If you really can't stand to have the stock Toyota air filter, put in a different drop-in filter, remove the charcoal/carbon "secondary" filter that is found in the air box lid, pipe-up a cold air intake collector down to near the grille area, and put a quality muffler on it.
In my understanding, the exhaust wrap may have two benefits. First, the one you mentioned. Secondly, less of that heat escapes into the engine compartment, keeping it cooler. That said, you won't notice either benefit in a stock or near-stock Corolla. I think you'd have to be running 5 pounds of boost with full headers and all that stuff to notice any difference.
Your stock intake already is a "cold air intake". Very little reason to change. If someone can show chassis dyno results of proven gains with one, that's one thing. But that evidence is often hard to come by. In other words, if you want to do an aftermarket intake for noise, do it. But I wouldn't do it for power...there are better ways to spend $150.
People wrap the intake side for no reason, a better alternative would be to get a plastic intake. As for wrapping the header, most people do that so it traps in heat for performance. Even with a highly modified engine, you would want the intake side to be as cool as possible and the exhaust side to be as hot as possible.
Intake will provide an increase in gain, the stock intake is a clot. There are just no dynos on this site.
Intake will provide an increase in gain, the stock intake is a clot. There are just no dynos on this site.
Are there ANY dynos available that demonstrate this, on this site or otherwise? I haven't ever seen one.
Most folks on the "other" 9th generation Corolla site say (from what I've seen) that if you've got a stocker, an intake won't do much for you if everything else is stock.
Are there ANY dynos available that demonstrate this, on this site or otherwise? I haven't ever seen one.
Most folks on the "other" 9th generation Corolla site say (from what I've seen) that if you've got a stocker, an intake won't do much for you if everything else is stock.
That depends, if you are referring to the 2zz yes it would show much gain since the stock intake is a clot. The 1zz would show some gains but you would need more mods linked to it since its only a helper mod to open up the airflow.
if u want power that u can feel, like other people said u need to get the whole package. Including headers, exhaust system, throttle body and then u will feel the difference. If u just get the cold air the other parts of the car are restricting air floe like the headers, exhaust and the throttle. Save up for a whole package, or just save up for a TRD super charger.
The AutoGuide.com network consists of the largest network of enthusiast-owned enthusiast-operated automotive communities.
AutoGuide.com provides the latest car reviews, auto show coverage, new car prices, and automotive news. The AutoGuide network operates more than 100 automotive forums where our users consult peers for shopping information and advice, and share opinions as a community.
ToyotaNation.com is an independent Toyota/Lexus enthusiast website. ToyotaNation.com is not sponsored by or in any way affiliated with Toyota Motor Sales, USA, Inc. The Toyota, Lexus and Scion names and logos are trademarks owned by Toyota Motor Sales, USA, Inc.
The old school header wrap trick...huh
Linear Mode
