what is the best underdrive pulley sets to buy and where is the cheapest place to get them at?? i've read that you can really tell the difference in response when these are installed. dont know anybody with them just from what i've read.

 

Super underdrive pully's work better and also make 25+ more hp that regular ones. I also hear the red one's make 2-5 hp more.

 

where do i get them at??

 

I have a brand new set of UR underdrive pulleys with brand new Gates belts. PM me if you are interested

 

Are you serious....gains are that much???

 

Your lucky if you get 5hp gain....The only thing these Underdrive pullies do is
Save you a few pounds.

A buddy of mine put them on his 05 350Z and it messed up his crankshaft in some way.....I would not get them, Invest in something else or save up for FI.

 

Can you offer more details on your buddy's crankshaft? That would be the first ever instance of this happening in the history of VQ's underdriven. I call BS

 

These are stock diameter, thus not underdrive, but they are much lighter than stock and some gains can be seen from them. By keeping the stock diameter you can use OEM belts and you don't have any issues with cooling or loss of alternator output.

AMS Lightweight Pulleys

 

there is no way you are going to make 25 hp on any pulley unless its a supercharger pulley and you are going smaller. I noticed faster revs and thats about it.

 

Dude - 07silver was being rather sarcastic

 

Yeah, there was a definite hint of sarcasm in his original post. It's funny to me that people are taking that seriously.....but you know what they say....if it's on the net it must be true.

 

Somebody has a perfect quote in their signiture... It maybe andy but I don't remember.

 

I have a Penske Underdrive Pulley on my G and it's making 50+ hp. I should have gone with the pink one, because pink adds an additional 20 hp.

 

I've never been a fan of underdrive pullies. I put them on my celica when I had it and my alternator crapped out.

 

so yall suggest not to get the pulley's??, that good to hear these things i was really about to order some this weekend. i havent heard any of this stuff before. all i have read about was good, thanks. oh by the way how does it mess up your crankshaft??