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I'm going to keep this short, because its a simple concept. For years people have been spreading the word that a 160 stat will cause problems. This is true, as it hurts gas milage and MAY cause the cylinder walls to wear faster due to less expansion. If your fan turn on times aren't matched, it can allow a cycle of 160 to 220 degrees back and forth, which will contract and expand the cylinders.
However, there is a myth in here as well. Open loop operation does not care if you have a 160, 180, or 195 degree stat. Closed loop is based on exhaust temp (O2 sensor working properly), coolant isn't below freezing (i have to look up the exact temp again...its really low though), and the time the car has been running.
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by bszopiPort injection The TB spacer is meant to keep the throttle body cooler, by separating it from the manifold using a phenolic material instead of metal. The misconception is that by adding space behind the TB, you are going to get more torque. The lowered temperature is fine, and is worthwhile (see TB coolant bypass), but the cost of a spacer and the remaining intake manifold temperature doesn't do a whole lot on its own. The performance myth with this device is that it allows more air in...
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Channel: Myths
05-31-2010, 05:32 PM -
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by bszopiA heat shield made out of aluminum is nothing more than a heat sink. The heat from the heads going to the manifold, with the throttle body attached to it will be a far greater source of heat compared to the exhaust manifold that is not attached to the throttle body. There are better ways to decrease intake air temp, with this one giving absolutely nothing in return for your money.
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Channel: Myths
05-31-2010, 05:31 PM -
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by bszopiThis isn't so much a myth, as it is exaggerated. The lines were put in by GM for cold climate conditions, which is said to cause ice to form on TB, which could cause a lot of problems, like a stuck open condition that can cause an accident. There have been no known reports of this happening, but there hasn't been any research either. ...
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Channel: Myths
05-31-2010, 05:30 PM -
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by bszopiThere are several different versions of this myth floating around.
Here is one view on why electricity and boost don't mix: Click Here!
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Channel: Myths
05-31-2010, 05:28 PM -
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by bszopiI'm going to keep this short, because its a simple concept. For years people have been spreading the word that a 160 stat will cause problems. This is true, as it hurts gas milage and MAY cause the cylinder walls to wear faster due to less expansion. If your fan turn on times aren't matched, it can allow a cycle of 160 to 220 degrees back and forth, which will contract and expand the cylinders. ...
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Channel: Myths
05-31-2010, 05:26 PM -
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by bszopiIAT stands for Intake Air Temperature. It is a simple thermistor that changes its resistance according to the temperature it is at. The idea beind this modification, is that by changing the resistance to that of a cooler interpreted reading, you will get more fuel. While it is true that you will dump more fuel...its false that this is a good idea. Running rich is bad for performance, so you are just wasting your time with adding more fuel in this fashion. ...
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Channel: Myths
05-31-2010, 05:07 PM -