I use Lucas because Kenne Bell suggests it, I have researched it, and I disagree with you. Lucas does raise octane by 3 full points, making our 91 premium here 94 or I would have blown this build up! I agree, there are others which do not.
I have no interest in another injection system which if goes bad or dry will blow-up my build. As I stated the few trips to camp and play lower than 3,500' will get the benefit of Lucas Octane boost. Lower than that and one can also get higher octane, add 2 points for that and it will be fine.
I have calculated this out with a spreadsheet which is based on good formula's for Boost, Power and Octane while tuning my own build. I have knowledge and experience that tells me this works.
Kenne Bell Tuning by Octane | Notes | Octane Pts | Based on minimum of 91 Octane Premium in Denver (+10 for E85) | 3 11/16 | 0.00 | 1000′ gain in altitude = .5 octane. | 5500 | 2.75 | 1 air fuel ratio = 2 octane. | 1.1 | 2.20 | 1° retard = -.5 octane | 10 | 5.00 | ECT drop 10 degrees = 1 octane (Swapped 160 vs stock 192) | | 3.00 | Lucas Octane Boost Needed for Lower Altitude or boost above 6lbs. | | 0.00 | 1psi boost requires +1.5 octane. | -6.60 | -9.90 | TOTAL (Safety Margin = 3 points of octane = 60 degrees ambient temp. increase.) | | 3.05 |
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