90TGP Posted March 16, 2003 Report Share Posted March 16, 2003 So does anyone with a 3.1 have an underdrive pully from http://www.fastfwdperformance.com??? If you do, post some feed back! Quote Link to comment Share on other sites More sharing options...
Robby1870 Posted March 16, 2003 Report Share Posted March 16, 2003 Yeah some has to have one. I saw the dynos they had, but I want to know for sure. Robby Quote Link to comment Share on other sites More sharing options...
ctx46 Posted March 16, 2003 Report Share Posted March 16, 2003 I have one on my 3.4...... I noticed a bit more power out of it with NO negitive side effects, the throttle feals allot more responcive than it did befor I put it in..... sorry, Im not a 3.1 though, I would imagin you would gain a bit more low end....... but thats my guess.... Quote Link to comment Share on other sites More sharing options...
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