i have the square NNBS rails and the FAST 57 lb/hr injectors. im using the o-rings that they came with. i never thought that they could be the wrong size.

 

They probably are correct for use with an aftermarket rail. Are you sure the NNBS style rail is aligned properly to that intake???

 

i think it is. but i do know that all of the injector cups on the drivers side are bent. i tried to bend them back the best i could but no luck. i am almost positive this is my issue.

 

i had a problem with the supplied fast o rings with my lsxrt 102 my mechanic fabricated some ac orings and shrink wrap to get the job done. comp was no help at all! as for break in i take it easy the first 500 miles varying rpms then a little more aggressive for the next thousand. then i change the oil and drive it like i stole it.

 

updates ?