anestech*

I have some detontation that needs to be tuned out. I don't plan on any heavy mods (torque converter, cam, heads, headers) for a couple years at least (till the car is not a DD). Will I screw up my tune if I decide to get an underdrive pulley in the not so distant future? Looking at the ASP (not that that would matter for this question though).

dubs6

iTrader: (1)

doesnt matter. pulley has nothing to do with tune.

Time2Kill

iTrader: (49)

Just like he said. A pulley isn't going to mess up your air/fuel ratio like a cam or headers might or anything else that will effect air/fuel delivery in some way.