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[ Follow Ups ] [ E36 M3 Message Board ] [ Msg. Board FAQ ]

Posted by Bob ///M3 on October 08, 2000 at 23:03:32:

In Reply to: 97 no chip posted by ben on October 08, 2000 at 22:23:15:

Without a chip increasing the rev limiter beyond stock I believe your stock rev limiter for 1st gear is 6,200 rpms and 6,500 rpms for all other gears.

Your best shift points and other related calculations are as follows:

1st to 2nd @ 6,200 rpms producing 236 lb/ft torque and 200 horsepower and engaging 2nd gear @ 3,676 rpms producing 234 lb/ft torque and 164 horsepower at a speed of 34 mph losing 257 lb/ft of driveshaft torque with the shift.

2nd to 3rd @ 6,500 rpms producing 185 lb/ft torque and 229 horsepower and engaging 3rd gear @ 4,333 rpms producing 230 lb/ft torque and 190 horsepower at a speed of 59 mph losing 77 lb/ft of driveshaft torque with the shift.

3rd to 4th @ 6,500 rpms producing 185 lb/ft torque and 229 horsepower and engaging 4th gear @ 4,855 rpms producing 225 lb/ft torque and 208 horsepower at a speed of 89 mph losing 28 lb/ft of driveshaft torque with the shift.

4th to 5th @ 6,500 rpms producing 185 lb/ft torque and 229 horsepower and engaging 5th gear @ 5,242 rpms producing 221 lb/ft torque and 220 horsepower at a speed of 119 mph losing 13 lb/ft of driveshaft torque with the shift.

The above figures are based on a stock '96 thru '99 M3 with 245/40 X 17" tires and 4.20, 2.49, 1.66, 1.24 and 1.00 transmission gearing and a 3:32 final drive gear.

As you can see, the best shift points are all at the rev limiter. If the engine was operating with enhanced performance software which increases the rev limiter, the shiftpoints would be 7,000 rpms, 7,000 rpms, 6,800 rpms and 6,600 rpms.

Hope this helps.

Bob ///M3


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