Performance

Hamp

Registered User
I know there has to be a simple answer for this but why do u have to spend so much on aftermarket parts to get more performance, wouldn't just adding a little more boost acomplish the same thing?
Joe : :confused:
 
the simple answer is no, boost is basically back pressure which adding more isn't good for the life of your head gaskets and what not.
 
It is simple!!! More boost does not always mean more power. You need to flow more air through the entire motor and burn more fuel in order to make more power. Look at it this way, the motor is just a big air pump and the more air that you move throught it the more power you make.

In general you can increase the boost on an otherwise stock SC by spinning the supercharger quicker. It will make more power because it is flowing more air through the motor. But it will reach a point given the stock design parameters of the engine where it will actually make less power. AND KABOOM goes your headgaskets!!!

The bottom line is that forced induction cars involve complicated mathematical forumulas to make them operate efficiently. OR as many in the SC community can tell lots of trial and error and blown motors/trannys and etc... The SC is not a cheap car to make go fast!!!
 
The blower makes a lot of heat. Spinning it faster makes more heat. Heat is not good. Mostly what your boost gauge measures is back pressure. I only make 13.5 lbs of boost with a 10% od. But my car is very free flowing intake and exhaust, a bigger intercooler and a fan is a must for good performance, these car are very expensive to really build.
 
Adding a little boost adds a little power. You don't have to spend a lot of money in aftermarket parts if you can make them yourself. Besides there isn't much of an aftermarket for SC's anyway since there isn't a whole lot of interest in this limited production car. The car was only produced for 6 years and there wasn't another car that used this setup. That plus the car is heavy (4000 #) and has a small engine.

Jeff
 
The entire SC package was designed around a very small and innefficient supercharger. It sucks for us, but all the parts that support the M90 are sized to match it perfectly (TB, MAF, IC, etc). With proper tuning and a good supercharger (ie. more boost) these cars will make 150 more HP than stock. However, because the supercharger is the problem, it is not an inexpensive solution. Just replacing the supercharger with a more efficient source of boost will result in more power gains than all other modifications combined.

So in a word, yes more boost will make more power. Problem is the M90 supercharger is not an efficient source for the necessary boost.
 
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