Has anybody heard about this?

Has anybody heard about this?

"One cheap way to get extra power and fuel economy
is to wrap your exhaust manifold/header with heat resistant exhaust wrap/tape.

"When exhaust gases are pushed out of your cylinders to your exhaust manifold, the air surrounding the manifold begin to cool the gases. This cooling process reduces the velocity of the escaping gases and the engine must 'work' to push the gases through your exhaust system.

"Wrapping the exhaust headers with exhaust wrap maintains hotter exhaust gases that exit the system faster through decreased density. Increased exhaust scavenging is produced, along with lower underhood and intake temperatures. I would also venture to guess that my catalytic converter operates more efficiently since hotter gases would elevate burning of pollutants.

"I purchased the exhaust wrap by a company called Thermo Tec from a JC Whitney catalog for around $30. I installed the wrap on the header and a portion of the exhaust pipe leading from the catalytic converter to the muffler.

"This mild enhancement resulted in a 5 - 7 HP gain ... the power surge starts at around 3,000 rpm. I haven't had the chance to monitor the fuel economy gains."


????

Header wrap has been around for years.. But it is not recommended to wrap OEM cast iron headers like those found on our cars because cast iron is more susceptible to cracking from thermal fatigue. Thats why we have heat shields. However you can benefit from wrapping aftermarket stainless steel tubular headers.

could work but don't recommend it. and the 5-7 hp thing is more like 1-3 if you do get any. and say for some reason you did get 5-7hp gain, you wont feel any difference in your car unless you had an engine that only had about 40bhp.The best way to get the best gas mileage is to change the way you drive. I've been looking for a miracle for many years. Haven't found it.

Accelerate without going over 3000 rpm, cruise as much as you can, brake as little as possible, drive at 65mph on the highway (and stay on the right lane), and in the city, drive where your tach is around 1200 to 1500rpm. dont work your engine too hard.

Other things that can give a good noticeable improvement is changing out the air filter to K&N or something or getting a CAI. replace your battery to something a bit more powerful. make sure your injectors aren't clogged, your spark plugs are good, your oil is changed accordingly, (basically proper maintenance should be done to the car). Grounding wires may help. remove any unnecessary weight from your car.

My car which is a 2001 impreza is supposed to get according to edmunds.com 18-23mpg. I have a bunch of shit on there such as Sun Auto grounding kit, Sun Auto power regulator, fuel magnet, and though it did make a difference, its minimal such as 0.2% - 3% difference. I also have a K&N filter, Optima Red Top battery (which made a huge difference), tires inflated about 8psi higher than factory recommendation, and I drive very slow (compared to others around me). That has increased my mpg to max of 28mpg and average of 23mpg. That is pretty darn good in my opinion for having and older car to do better than what the factory said initially back when it was new.

Other things I have done which didn't help much in economic driving is using different grade petrol, using those economy booster things you put in your petrol to get better gas mileage, throttle spaces, wrapping exhuast pipes, using special wax that claimed it will make your car slightly more aero dynamic, even used the tornado when it first came out several years ago. Much of these were done with my old corolla but it didn't do much at all. I've tried everything you've seen on infomercials since I usually had a 30 day satisfaction guarantee.

any heat wraps is just a waste of money,i never have thought of buy one of them.

qft...

mine works =]
wrapped intake too