What'* up everyone. I'm new to these forums. I've got a 1999 Bonneville SSEI and am looking for easy ways to increase horsepower and do up my bonnie a little. I was thinking about throwing a smaller pulley on the supercharger. But I want the pros and cons to it.

I suggest only dropping to a 3.5" pulley. Going smaller will give you a lot of knock retard and can damage your engine. It'* also a good idea to open up your intake a bit.

Hi Aaron;

Welcome to the Bonneville Forum.

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I did the 3.5 change and felt great power. The 3.5 is the most common size guys run with for a while until there foot requires more speed.
I would suggest going with a Multiple Pulley System (MPS)

That way you can swap out different sizes when needed quickly.

Thanks guys. I'll check it out. I heard the 3.5 is the way to go.



99 SSEI Brown

What is the stock size?

3.8 i believe... lol and on a 3.8L motor... figure that one out

What year? On a series 2 it'* 3.8"