hey everyone, I am trying to decide between the unorthodox undrive pulley set ( the alternator, wp, and crank) or do I get the motordyne 5/16 iso thermal spacer!

I understand the more you mod the more the fuel, but which one would not affect mpg as much, and which one will provide the most gains with the mods I have currently.

I currently have 2004 at g coupe, borla exhaust, jwt popcharger, and z tube..

thanks for the help everyone...

 

from what i understand the pulleys will give u more instant throttle response....AKA quicker REVS....where as the spacer gives u more HP...specifically the 5/16 gives u more low to mid end RPM gains..and a small loss on higher RPMS....AKA more usable power....for me i dont have pulleys but do have spacer...i highly reccomend spacer simply cuz its most bang for buck on the G....and as far as DIY spacer well easier than pulleys to install

 

can anyone comment on the pulleys, and whether or not they actually do anything? or is it more like the grounding kit and throttle body spacer?(mind dyno may I call it?)

 

Go with the Plenum Spacer. I have it on my 04 6MT and I love it man. 5/16" for the WiN

 

I have the UR crank pulley as well as the flywheel that goes at the other end for even more lightening of the rotating mass. The car does rev up slightly faster, but it drops off in rpm even faster when you change gears. Not a problem for AT thought. If you are deciding between spacer or pulleys, I say get the spacer and if you really want to get pulleys then just get the crank one.

 

KC, there is really no comparison between the spacers and pulleys. MotorDynes 5/16" spacer corrects Nissan's design flaw within the intake allowing equal amounts of air to all ports. This is one of those mods you can really feel in seat of your pants and worth every $ spent....
Gary