I to have the tw-555 and am very happy with them. I also had the se-255 cams and was not happy with them at all. I'm now able use 88-89 octane with little trouble, most of the time I use 90 octane. Now that the gas is at $4.43 a gallon :AGGHH: here it will be a while before I see any thing above 90 octane.
I'm finding with the tw-555 cam I'm not having to shift as often as with the se-255 cams.
Butch
I'm finding with the tw-555 cam I'm not having to shift as often as with the se-255 cams.
Butch