Did you have any trouble with it fitting? I bought my recal kit from vortechsuperchargers.com and the damn ring will not fit around the bolts inside the FMU. Can I file away a little of the ring to make it fit, or is this a bad idea. I know that it does not fit, Dino agreed with me that it did not fit. I called vortech and they said,"Uh.. well is should fit." Is that great support or what?

So anyways, can I cut the ring a little to make it fit? I don't want to send it back to them and then wait for a replacement, I would rather just make it fit myself. Thanks guys.

hhhmmmm? i just got me recalibration kit in. didn't realize it didn't come with the 3:1.....i'll be running HRC 500cc at about 15-18psi.....anyone think the 4:1 will work...some peeps are saying no....

i would just be patient and get the right disc....fuel is something you don't want to mess up. but i guess i'm a hypocrite cause i'm tempted to just use the 4:1 with my setup instead of re-ordering the 3:1......

http://www.vortechsuperchargers.com/pdf/manuals/fmurecalim.pdf

that's weird...i put mine on easily. it fit well. make sure the notch is facing down. it should be right on top overlapping the 4 bolts. i'm using 36lb injectors and it works fine.