Quote:
Originally posted by cobrazex
I guess FORD must of made a mistake when they stamped "premium unleaded fuel only" on the fuel gauge on my 98 COBRA...........
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Your Cobra has a much higher compression ratio which creates more heat and will make lower octane fuel flash earlier or pre-ignite. I'm sure if it was 9:1 instead of 9.85:1 it would be a different story. Hell, I would have my car tuned on C-16 if I thought I wouldn't go through a 55 gal. drum every 2 weeks @ over $300 a barrel. I have seen cars tuned on pump gas make 490 rwhp and then switched to C-16 on the dynoand a new tune and make over 150 rwhp more. I guess 22-23 points makes a huge difference.
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99 Silver GT Auto
DTA Built Engine w/P&P heads, TDC Turbo (T-76), Built 4R70W, PI Multi-Disc 3200 T/C, Eaton 31 Spline Carrier, Strange 31 Spline Axles, Aeromotive 1000 HP fuel system, 66lb injectors, MSD DIS4, Accel DFI Gen VII & Mac 3" cat-back.
Built by Jade Performance
Best on Nitto D/Rs
11.698 @ 120.898 @ 12 psi (built block)
Best on Slicks
10.922 @ 122.95 (stock longblock)
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