ok i went to the track today it was ok, good and fun,but.....i was running ok with my 50 shot on,so i decided to bump up to the 75 shot. i ran it twice both had worse times for some reason,i wasnt spinning out or anything like that.it ran14.3@102 BOTH times to where the 50 shot was running 13.9@103,anyways i went to double check that i installed the correct jets for the 75 shot, they were right.heres the thing as we were putting it back together my freind notice oil on the valve cover, it had pooled in the bolt holes, it was wet around the PCV and back not in front of it but behind it(towards firewall). so when i got home i wanted to look closer at this issue, when i pulled the PCV hose off the PCV valve it actually had some oil in it than ran out or at least it dripped out,pretty good bit too. i know the PCV vents pressure back into the Throttle body so, did the extra nitrous actually cause pressure to increase so much it forced the blow by back to the PCV therefore blowing it out of the hose(this hose has no clamp on it)? My mustang has the 4.6L in it. just try'n to find ut if anyone else has had this problem and if so what to do about it? i want to run the 100 shot soon but problems like this are making me sketchy about it. PLease any info would help ill call NX as soon as i can.

 

forgot to mention that the valve cover bolts were tight

 

you may have gotten some blow by caused by the n20 system, as for the drop in performance, what was the bottle pressure? how full was it ? and was it cold. Any of the above will cause a rich condition, and big time drop in performance. I run all my bottles at 900-1100 psi most systems are made to work with these pressures. I also only make 2 or 3 pass's at the most per 10lb bottle, if I try squeeze more pass's out of a bottle I loose consistancy,