I only ran my holset car once, but it was my first ever time at the track. Best I could get was a 12.5 @118, I was running a gutted 2G maf, had a leaky BOV, and leaky TB seals. When I just switched the MAF (To a 2G non gutted with all the honey combs) my airflow readings went from a 42lbs/min to 52 lbs/min at 30psi (where exactly where it should be for a 56mm 8 blade hx35), car started running a lot stronger, after I fixed all the dumb problems, I got to run a 11.50 GN from a dig in mexico on slicks and meth and we were dead freakin even. PM me if you wanna see the video.
Unfortunately I never got to run it again after that, I really am trying to run this year at the shootout on the new set up, since they don't tech and I don't think my car will pass tech at any track near us