lx347cd
Well-Known Member
why so much less hp with the PBD tune over whipple tune? timing difference?So I have had the car back for a couple weeks now and have about 700 miles on the new motor, clutch ( RXT HD 1200) and BC stage 3 transmission. I can tell you the PBD tune idles perfect and drives like a dream. I'm not sure how much the new trans and clutch have to do with it, but I'm extremely happy. Rob from PBD has done a great job so far. On the same in ground dynojet I made 776.60 whp and 572.01 ft lbs ( 23 degrees) with whipple tune, I made 717 whp and 553 ft lbs (19 degrees) with PBD. Rob gave me an additional tune for 22.5 degrees of timing, but we ran out of time on the dyno and I didn't get to run it.
I'm going to try to get to the track this weekend to see what it does MPH wise and will report back.
I run 93 octane with a bottle of either lucas oil octane booster or a boostane shot with each tank fill up. Peak boost with 3.625 pulley have been 13.1 psi.
My avg MPG with the DW 95lbs, JMS BAP, and PBD tune has been 16.3 with combined city/highway; which is up from about 13 with the prior whipple based tune.
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