Well, in the most basic sense, the exhaust pipe that you find in your vehicle is a tube that actually guides any exhaust or waste gases away from your car’s engine. It is very essential for if the waste gases simply accumulate in your car’s engine, you and your passengers can actually suffer from poisoning of these gases and it could be very lethal.
4)Also watch out for fraudulent promises. Car salespeople at car dealerships are notorious for this. Get any promises in writing. If the car has a warranty and what is actually covered can be quite different from what the salesperson says. Remember, the salesperson doesn’t care about you and only wants a quick sale. You must make sure it has the warranty you desire. The salesperson at Farmerville Motors stated that the entire emissions system on the car I purchased was covered for one more year – upon taking the car to a GM dealership it was found that only the recycle catalytic converters was covered, not any part of the OBD and emissions system. Get it in writing.
Basically you want similar plugs as stock, but a cooler heat range and a smaller gap. The stock plugs are NGK BKR6EP-11 (2978) and are platinum tipped and have a .044 (1.1mm) gap. The ideal NGK replacement for a modified Supra would be the BKR7E (6097). It is one range cooler (the ‘7’), is non-platinum tipped (the lack of the ‘p’) and has a smaller .0315 gap (lack of the ‘-11’). This plug is also called the NGK 6097 and they are fairly inexpensive. Platinum tipped plugs are not desired for high power applications, Iridium plugs are more preferred. Unfortunately their doesn’t seem to be a BKR8E which might be better for high-HP Supras.
Of all fluids circulating throughout your vehicle, this is arguably the most important to check regularly. Your engine needs a constant and ample supply of oil to protect its moving parts from friction. The oil lubricates these parts. The problem is, some cars burn or leak oil without their owners realizing it. As a result, the level declines and less is available for lubrication.
Next we have the recycle catalytic converters. These legally required emissions control devices are often accused of restricting a vehicle’s exhaust, but in the new Tundra that’s not the case. They are efficient and they benefit the environment, so they’re definitely off limits.
Exhaust manifolds are usually pretty restrictive to the flow of exhaust gas. So therefore they waste a lot of power because your pistons have to push on the exhaust gasses catalytic converter recycler pretty hard to get them out.
The Supra TT with the 6-speed has a stock engine redline of 6800rpm, and a 6th gear ratio of .79:1, with a rear axle ratio of 3.13:1. Now we multiply our 6th gear ratio times our rear axle ratio, and we find out our final gear ratio is 2.472:1. Now we divide 6800rpm by our total gear reduction of 2.472:1 and we find out our rear axles, and therefore wheels are spinning at 2751rpm at 6800 engine rpms.
I also pull out old fuses, bulbs, and other items that I might need for another car (yes, I am that cheap!). Your old junk car is probably full of other copper parts that may or may not be worth the time to remove. Insulated wire sells for about nothing and it can be a time consuming task to remove the insulation. I noticed a local recycler was paying $1 a pound for oxygen sensors. If your oxygen sensor is easy to remove yank it out, if not I wouldn’t take the time.