I think this is a great example of how the CF's you guy's use at higher altitudes don't work well for our turbo diesels! oke: And this is not meant to take away from a great dyno run at all!! :bow:Super Diesel said:I don't know what the raw figures were but it is good enough for a 112+mph 1/4 pass at our local 6000+ft elevation track. The truck comes in at 7200+lbs (4D LB 4WD). One program and a single shot of N2O. That all folks. No fuel upgrades yet, but on the way.
Good post Greg. I'll add that correction factors are great for tuning, but on the track you can toss them out the window. And Dyno runs made a week before the track may calculate, and may not depending in the air quality each day.Dockboy said:I think this is a great example of how the CF's you guy's use at higher altitudes don't work well for our turbo diesels! oke: And this is not meant to take away from a great dyno run at all!! :bow:
Using Smokemup.com for trap speed, which is by far the most accurate hp calculator available, 7200 lbs. @ 112 mph = 686.9 rwhp.
My truck at 7900 lbs. has run several 108's for a 679.3 rwhp.
When I dyno(Dynojet), my raw numbers in that config. are 625. Then negativly corrected(0.98) to 612.
Assuming IBDMAXIN's dyno run was done useing a 1.2 cf(probably pretty close), his 756 would yield a raw number of 630.
Both the calculator and raw numbers are almost identical for what each truck does in it's own location.
If the correction factor was truely valid, that would mean IBDMAXIN's truck would gain 130 hp by coming down to near sea-level. Now granted, I do believe you will gain or loose going from sea-level to altitude and vice versa, bt it's going to be more like 30-50 hp with a forced induction motor not 130 :shrug:
Again, nothing against IBDMAXIN's dyno run!! I KNOW how much work it takes to achieve 600+ runs and I congratulate him. I just don't think these correction factors setup for non-forced induction motors work for our application :shrug:
From what I've heard, the propane on Clint's truck adds about 100hp or right around there. It's still extremely impressive to see a truck run 600+hp on #2 only esspecially when it's a D-Max.BMDMAX said:Clint at ATS with his truck is said to have crossed over 700 with is modified CP3 pump, big turbo and propane at May Madness. I don't know if the propane was needed to get it over 700 or not.
I don't know the correction factor either.
Right now our two biggest hurdles are the turbo and the CP3 pump to make 700 on fuel.
If I read this correctly you are saying you will gain MPH not ET by going down in elevation?Super Diesel said:The correction was for sea level. Lets keep in mind he ran at 112+mph through the 1/4 at 6000ft elevation track. WAAAAY different than running at a 2000ft or below track. The terminal speed will be much higher at lower elevation. Any doubters care to try it? My 8100+lbs truck ran though the traps at 111mph with a NO BOOST LAUNCH (from idle) and I blew the head gasket at the 1/8 mile and coasted though the traps. This was done at the same 6000+ft elevation track. 800+hp will be showing up soon.
:agreed: Johnny!! :Thumbup:John DiMartino said:Congratulations! The only thing is a 6000 ft correction factor isnt worth much when your creating your own atmoshere with Nitrous oxide.Run it on diesel only and thats a diffrent ball game,and even then turbo diesels lose much less than NA gas motors that the correction factor was really designed for.I know there is more lag at 6000ft,and that the power will be down a very slight amount,but nowhere near what the correction factor shows.