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Re: CHIP, EXHAUST, AIR FILTER (archive)
[ Follow Ups ] [ 7-series (E32) Message Board ] [ Msg. Board FAQ ]
Posted by Jim Derrig on April 01, 2001 at 10:45:22:

In Reply to: CHIP, EXHAUST, AIR FILTER posted by Al on March 31, 2001 at 13:24:02:


WILL AN ENGINE CHIP, TRANSMISSION CHIP, EXHAUST, AND K&N FILTERCHARGER HELP OR HURT HP?

AL FRISINA

The answer depends on what you're looking for. Help or hurt what? Gas mileage? Peak horsepower? Real-life driveability? And are you driving a V12 or a 6?

I have all of those things on my 1993 750. Gas mileage is not affected, but now I have to run premium. Peak horsepower is up perhaps 40hp. Real-life use of the extra power is pretty much zero. Why? In the US real-like conditions doen't favor top-end speed, but low-end pick-up. All of the modifications you mention only affect top-end horsepower. Because the e-32 is very heavy, and because the rear axle ratio is low and the torque converter has a low stall speed, none of that top-end hp increase can be seen in normal driving. In fact, you won't see in until about 100 mph. How often will you see that speed or higher?


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