I know a lot of ppl swear that it is safe but i am leary of it. Whenever N2O is used fuel needs to be increased and the way it "tricks" your engine by going through your MAF just isn't solid enough for me. (hell, I really dont 100% trust MY kit even though I haven't had any problems)
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My Mustang
91 LX Conv. 52,000 orig mi. Hurst shifter,King Cobra clutch, 3.55 grs, NOS 150 kit, MSD 6al, MSD timing control, malory coil, pullies, adj fuel reg, BBK 70mm tb, Pro-m 75mm maf, battery in trunk, JBA: shorties,subs,strut tower brc, Comp eng. 6 point cage, dynomax 2 1/2" exhaust, Hotchkis lower cntrl arms, MAC cold air kit, off road h pipe. BFG 275/50/15 Drag radials