DING DING!! my afr dropped 2 full points and the loop equalizes the pressure across the rail. no more lean cylinder at the rear of the rail. bruce and i are finishing up the loop and he should have it available in another month or so. i have had it on my car for about 3 months now. it was unsightly and bugged the crap out of me. since then i have reduced the line and rerouted it so all intakes oem or otherwise will fit with the loop. also i have bruce setting me up with a fitting to run fuel pressure fittings off the rail