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Sorry to bother you again with my question, but (m (archive)

[ Follow Ups ] [ 5-series (E39) Message Board ] [ Msg. Board FAQ ]

Posted by STT on July 07, 2000 at 14:26:29:

In Reply to: 540i SC dyno pulls... posted by Hans on July 07, 2000 at 13:55:47:

: Stepan, I appreciate this banter, argumentative, but open to discussion, much more interesting than JZ dialogue. Onto the DYNO pulls. I pulled these links off of the Garrett website. The Motronix 540 is the one I was involved with. After ERT took dyno readings of the car, they said they were the highest ever registered for a 4.4 litre, they couldn't explain it. Then high-flow cats were put in, which was a must plus the GIAC software. Note the car pulled an estimated 421hp at the crank before the cats and software. I made the estimate of over 420hp because the GIAC software solved a few niggling problems and the cats really let the car breath, which it was having trouble doing. You might want to stay away from the cams and supercharger. I remember back in my mustang days, the supercharger kits always ran better on dead stock cams.

: To the guy who supercharged an LT1, I also did and the engine (25,000 miles) needed a full rebuild shortly after.

: www.giacusa.com/images.dir/540sc.jpg
: www.giacusa.com/dyno.html

who makes high flow cats ? Is it a company called something like "Enviromental Design" in CA. If it were them then they have a highest quality of craftsmanship I've ever seen - they made 3.5L high flow cat for my Alfa in place of 2.2L one.

Cams are not Mustang type radical. They are more on the mild side - duration on the exhaust side is ecreased by about 20 degrees and on the intake sude by about 15 degrees compared to stock cams. I have single VANOS and, if necessary, exhaust side can be frozen. I do not think that it would be a problem.

Stepan


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