Paxton FMU Disk question

[TR930]

Anyone know the 2 sizes that come with the Paxton kit? 10:1 and 8:1? Also, does anyone know what the actual sizes of the disks are? I have a disk in my FMU that is 1 7/8 inches in diameter and I need to go leaner as my fuel is ******* off the dyno scale (rich). Dan at DC is helping me with this but curious of anyone else out there knew the answer.

Thx

 

[TR930]

I know what they are: 8:1 (Rich) 6:1 (Lean) My disk was 6:1.

 

[mjorgensen Woodhouse]

1.855" (6:1) disk is normal for the 03-04 Vipers stock and the 2.22" (8:1) disk is for 05-06 cars or modified Vipers

 

[Black Moon]

Sounds like you have the 8:1 and the altitude can't handle it. I'd call Paxton and get the correct one. When installing it do not torque the screws too much or you will distort the diaphragm.

 

[TR930]

I measured, I have the 6:1 one. Can't go any leaner through the FMU.

 

[plumcrazy]

you need a real fuel system and a tuner to tune it