172mm and 180mm Pulley Sale for the 55 Kmopressor
09-04-2009, 02:46 PM
#26
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c63
On a car with the mods that you have just mentioned..... do you know how much more power would 180 mm pulley make over 172 mm pulley? I've asked many people and some told me they estimate 10 rwhp gain while others have said 25 rwhp gain 
So I'm basically trying to get a more verifiable answer..... Do you have any dyno or any data to show how much the difference in power is by changing only the pulley on the same?
So I'm basically trying to get a more verifiable answer..... Do you have any dyno or any data to show how much the difference in power is by changing only the pulley on the same?At this time we do not have any dyno charts of the same car with the same mods and swapping the 172 to the 180
We are looking for a car to do this testing on if yourself or any one is interested doing so
09-13-2009, 01:14 PM
#31
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2002 BMW M5, 1992 AWD DSM, 1988 Yamaha FZR1000
I'm trying to figure out a time/place to get the 172mm pulley installed, and to remove the ECU and have LET reflash it while the car's in the shop.
My car is stock w/ K&N filters (and gold-heat-reflective-tape-wrapped intake snorkels for an additional +114.5hp), so would it be reasonable to assume that the dyno graph shown in the first post would be similar to what my car would see? ~450rwhp (530bhp) w/ a 172mm pulley and tune?
Sounds fun. Probably going to have to wait until summer to get it installed, though... it'd be suicide to drive on Utah's snowy roads during the winter with an ADDITIONAL 50 ft-lbs of torque...
My car is stock w/ K&N filters (and gold-heat-reflective-tape-wrapped intake snorkels for an additional +114.5hp), so would it be reasonable to assume that the dyno graph shown in the first post would be similar to what my car would see? ~450rwhp (530bhp) w/ a 172mm pulley and tune?
Sounds fun. Probably going to have to wait until summer to get it installed, though... it'd be suicide to drive on Utah's snowy roads during the winter with an ADDITIONAL 50 ft-lbs of torque...
