SoCalDMAX
09-29-2002, 18:06
I spent most of the morning on Sat. the 28th with Joe at Pacific Performance, what a great guy! He ran my truck on the dyno and I learned volumes about the truck, dyno testing and hp/torque numbers. Not to say I'm any expert now, but the wealth of info he and others shared with me was incredible. I'll post the scanned dyno sheets Mon or Tues. for all to look at.
The truck ran 247hp and 430ft-lbs stock, or I should say with Amsoil filter and Gibson Exhaust. This is right smack in the middle of results from a number of other Dmaxes. Keep in mind, there are differences between 01s and 02s, example: the 02s have a "throttle plate" of sorts which allows low pressure EGR to mix with high pressure intake, 02s have slightly higher rev limit (3300 vice 3100) and probably other issues we didn't discuss. Those of you concerned about whether Juice V3.xx is putting out advertised numbers, relax... on level 4 it generated 332hp and 653ft-lbs, fully 85hp and 225ft-lbs more. The Powershot 2000 propane generated 345hp and 601ft-lbs, a 98hp and 171ft-lb gain. The combination of Juice level 4 and propane was good for 401hp and 724ft-lbs, a 154hp and 294ft-lb gain. As you can see, each mod gives the advertised gains, but at higher levels it becomes more difficult to make more power, no matter how much we'd just like to add up 90 + 100 and get 190hp. I do believe that diesels respond better than gassers in that regard.
What I'd like everyone to keep in mind is the area under the curve and at what rpm we really drive at. The stock Dmax produces 250ft-lbs of torque as low as 1450rpm, probably 300ft-lbs at 1800rpm and crosses 400ft-lbs at 2300rpm. Juice level 4 (which was not designed for towing) produces 300ft-lbs at 1700, 400 at 2100, 500 at 2300, and 600 at 2450. We'd rather not be towing at 2200 rpm and up, either we're in 4th which is killing mileage or 5th, in which case we're racing minivans. ;)
As much as I'd lke to think everyone with a cool dmax is reading TDP, I saw a very cool truck there with $18,000 in audio, video and engine upgrades. I haven't seen anyone here brag about owning it. It also had dual remote reservoir Bilsteins up front, 37" tires, lift, dual Autometer gauges in the overhead console (for airbags) and triple Autometer gauges in a pillar pod which was faired in and painted. There were also trick electric powered steps which swung down from under the truck for each of the 4 doors. I saw dyno sheets on this engine and it blew me away! How about a tow program that provides a flat min. 600ft-lbs of torque from 1700rpm to redline!
My point in mentioning this is not to discuss any one product, but to keep in mind what you really are doing with the truck. Stomping out poorly executed Rice is fun and all, but I think it would be wise to see dyno charts as well as a photo of smoke levels of a product to ensure that it's suitable for the intended use. For those (I think most of us) who bought the truck for towing, an honest look at torque as well as hp curves would ensure that you're getting something suitable for the task, without covering your trailer in soot. Look at how much torque is available at what rpm, be honest about how much time you spend at what rpm.
I know John Kennedy and others have said it before, but it bears repeating - "Look at the area under the curve!" I'm very happy with my truck and the mods I've bought. For those looking at this new crop of power programmers, etc, just keep in mind the curve as you drool at all of the new features.
I'm really excited about all of it! :eek:
Regards, Steve
The truck ran 247hp and 430ft-lbs stock, or I should say with Amsoil filter and Gibson Exhaust. This is right smack in the middle of results from a number of other Dmaxes. Keep in mind, there are differences between 01s and 02s, example: the 02s have a "throttle plate" of sorts which allows low pressure EGR to mix with high pressure intake, 02s have slightly higher rev limit (3300 vice 3100) and probably other issues we didn't discuss. Those of you concerned about whether Juice V3.xx is putting out advertised numbers, relax... on level 4 it generated 332hp and 653ft-lbs, fully 85hp and 225ft-lbs more. The Powershot 2000 propane generated 345hp and 601ft-lbs, a 98hp and 171ft-lb gain. The combination of Juice level 4 and propane was good for 401hp and 724ft-lbs, a 154hp and 294ft-lb gain. As you can see, each mod gives the advertised gains, but at higher levels it becomes more difficult to make more power, no matter how much we'd just like to add up 90 + 100 and get 190hp. I do believe that diesels respond better than gassers in that regard.
What I'd like everyone to keep in mind is the area under the curve and at what rpm we really drive at. The stock Dmax produces 250ft-lbs of torque as low as 1450rpm, probably 300ft-lbs at 1800rpm and crosses 400ft-lbs at 2300rpm. Juice level 4 (which was not designed for towing) produces 300ft-lbs at 1700, 400 at 2100, 500 at 2300, and 600 at 2450. We'd rather not be towing at 2200 rpm and up, either we're in 4th which is killing mileage or 5th, in which case we're racing minivans. ;)
As much as I'd lke to think everyone with a cool dmax is reading TDP, I saw a very cool truck there with $18,000 in audio, video and engine upgrades. I haven't seen anyone here brag about owning it. It also had dual remote reservoir Bilsteins up front, 37" tires, lift, dual Autometer gauges in the overhead console (for airbags) and triple Autometer gauges in a pillar pod which was faired in and painted. There were also trick electric powered steps which swung down from under the truck for each of the 4 doors. I saw dyno sheets on this engine and it blew me away! How about a tow program that provides a flat min. 600ft-lbs of torque from 1700rpm to redline!
My point in mentioning this is not to discuss any one product, but to keep in mind what you really are doing with the truck. Stomping out poorly executed Rice is fun and all, but I think it would be wise to see dyno charts as well as a photo of smoke levels of a product to ensure that it's suitable for the intended use. For those (I think most of us) who bought the truck for towing, an honest look at torque as well as hp curves would ensure that you're getting something suitable for the task, without covering your trailer in soot. Look at how much torque is available at what rpm, be honest about how much time you spend at what rpm.
I know John Kennedy and others have said it before, but it bears repeating - "Look at the area under the curve!" I'm very happy with my truck and the mods I've bought. For those looking at this new crop of power programmers, etc, just keep in mind the curve as you drool at all of the new features.
I'm really excited about all of it! :eek:
Regards, Steve