Quote:
Originally Posted by neil_b
Part two is now up! Does fitting an underdrive pulley give more horsepower? We fit one then go to the rolling road to find out!
https://youtu.be/CvFdH11y4EI
![](http://986forum.com/forums/uploads02/s02e34_perf_mods_pt2_copy1484817212.jpg)
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Is this 273 wheel hp or does the dyno convert to crankshaft hp?