here is what the monty does with NO FPR installed:
1st gear...pulls fine
2nd gear,if I give it to much pedal,it breaks up,half throttle it will pull ok
3rd gear,same thing as 2nd.
4th,will pull fine,doesn't sputter but feels like it's not wuite there yet.
5th gear will zoom along,but going up hill,even slightly,i feel the sputter coming along and have to drop back to 4th.

with fpr...I went thru ever psi starting with 1lb,it is un driveable...breaks up with the pedal p[ressed,if I give it half throttle,it runs fine but it can't pull a hill.

1991 Montero RS