New Member Dyno Sheet

[werewolf]

So ... it remains a bit of a mystery how to increase motor torque by 50 ft-lbs with no change in the air/fuel ratio. Sounds like timing advance alone, from 91 octane to 93 octane, won't do it ....

[barondw]

my ford lightning makes 400 rwhp on 91 octane and 13 degrees of timing. 430 rwhp on 100 octane with 19 degrees of timing. not sure if more fuel is added or not between the two tunes. i just flip a switch and presto more power. the software is diablo revolution.

Freddy

A couple of questions.

Can the Diablo Revolution be reset to original settings so the dealer does not know it was modified like the Predator?

Unfortunately you have 2 mods, timing and racing fuel. Have you dyno'd with 91 octane and timing change? This would provide a better comparison.

Dave

[Fast Freddy]

yes my program still retains the factory setting which with just a flip of a switch i can go to that program. the factory would never know. but the reality is my truck has way more mods on it than just software tuning so it really doensn't matter. with that said when i get a GT my plan is to swap pulleys for more boost, swap out the factory exhaust for long tube headers and a custom fabbed exhaust system with high flow cats. last but not least, give the car a tune with 2 programs. one for 91 octane and one for 100 octane. assuming you make 16 lbs of boost with the aforementioned mods you should be looking at > at least 650 rwhp on 91 octane and maybe as much as 700 rwhp on 100 octane.

buy the time i buy a GT........... the warranty will have expired. so screw the emissions nazis and the dealer police

[SLF360]

my ford lightning makes 400 rwhp on 91 octane and 13 degrees of timing. 430 rwhp on 100 octane with 19 degrees of timing. not sure if more fuel is added or not between the two tunes. i just flip a switch and presto more power. the software is diablo revolution.

Well, I just did a 'presto' calculation check of this rwPe gain, following the underlying theoretical logic I outlined above, (using the Pi proportional increase X*100/91)..:
100/91*400hp is a max of 439HP. Accounting for the accordingly increased frictive losses Pr, 430 rwhp is very much correct as effect of Octane increase.. The 6° timing correction you can afford as higher octane gas mix means less tendency of knocking (selfignition), it allows for fuller ignitionspread and pressurebuild pre pivotpoint, a good approach with good milage result. You don't want to mess with pump pressure between switch settings either, in fact you would most likely thin out the fuel slightly to optimize combustion mileage....