Engine/Transmission (1998.5 - 2002) dyno chart for my eth/ez

[CUMINNTSTRKN]

#ad


as you can see i'm very happy with my stock numbers 258. 5hp and 521. 2trq and with my ez 290. 9hp and 672. 1trq.

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2001 eth ez box and more on the way

 

[WAYNE]

Dynoed my truck also, picked up 52 HP& 156 ft/lbs. nice plug in power.

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99 QC. Sport,2WD 139"wb. auto, 3:54 limited slip, all options except leather. autometer ultralite boost and trans. temp gauges,computech digital EGT moniter, K@N 14" cone filter, 275HP. RV injectors, custom 4"exhaust, power edge EZ, DTT VB & TC, mopar performance deep transmission pan, mag hy-tech rear end cover, roll@lock bed cover, plus other cool stuff.

 

[HeberRam]

Cuminntstrkn... I too am a little confused with these supposed stock numbers?? The stock ETC from cummings advertises 245hp and 505 torque at the fly-wheel. . Your'e getting more than that at the rear wheels? With an average loss of 20% from the Fly-wheel to the rear wheels, you would be at 309. 6hp at the fly-wheel stock???NWIH
Please also explain what you meant by the Dyno numbers were corrected??? Corrected for what??

 

[Archive]

Horsepower can vary with altitude. I don't know the formula, but a few thousand feet can cut a second off of your 1/4 mile times. The lower the altitude, the better, the faster. Denver drivers will gain a second or two just by racing at a coastal city.

I have witnessed ETH engines dyno at 245HP. I have read several reports of them dynoed at 239-240HP. This was basically almost at sea level. Is this accurate? Who knows!

Another case: An ETH, with DD3 injectors... dynoed at 350+HP. No other mods, except a psyscotty. I can't believe the psyscotty had any effect, while sitting on the rollers. This dyno seems awfully high, but would fall right in line with the others posted here recently.

After watching numerous (maybe 50-60)dyno runs/results, I am not sure that they are any better than a G Tech, or using the 1/4 mile time/formula for rating HP.

 

[RedRam1]

CUMINNTSTRKN,

Pretty impressive numbers; have you driven any other ETH's? If so, does yours feel stronger? I've been considering adding the EZ and 275 injectors to my ETH (not sure in which order), the only thing holding me back is that we're going to be building a new house this spring & bombing my new truck is just not in the budget for a while. Have you experienced any clutch slipping? That's another factor in my decision to hold off... I'd hate to be looking at a $1,000 + clutch on top of everything else. Is there any downside to the EZ in your opinoin? I'm primarily concerned about egt's, low speed drivability, and cruise control operation. Thanks for your help

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2001. 5 2500 4x4 Quad SLT SB 3. 54 ETH/DEE

 

[CUMINNTSTRKN]

Originally posted by RedRam1:
CUMINNTSTRKN,

Pretty impressive numbers; have you driven any other ETH's? If so, does yours feel stronger?

the only other eth that i have driven is the gm's at the local dodge dealer. he has a bd box and a set of 275's. i feel by my s. o. p. meter that my truck with just the ez would out run him.

I've been considering adding the EZ and 275 injectors to my ETH (not sure in which order), the only thing holding me back is that we're going to be building a new house this spring & bombing my new truck is just not in the budget for a while. Have you experienced any clutch slipping?

i have not had any clutch slipping yet but at my elevation 4000ft and higher i am only making in the mid 400's for torque.

That's another factor in my decision to hold off... I'd hate to be looking at a $1,000 + clutch on top of everything else. Is there any downside to the EZ in your opinoin? I'm primarily concerned about egt's, low speed drivability, and cruise control operation. Thanks for your help

i love my ez and the coolest thing about the ez is that it doesn't mess with your void stickers if you have them. i would highley recommend the ez. i've been told no clutch problems with just the ez.


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2001 eth ez box and more on the way

[This message has been edited by CUMINNTSTRKN (edited 02-06-2001). ]

 

[RedRam1]

Thanks for your input CUMINNTSTRKN, I'm gonna have to work at resisting the urge to spring for an EZ... . He%%, with the amount of cash I'm going to be coughing up on the house project, I'll be so broke another $650 or so won't make much difference!


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2001. 5 2500 4x4 Quad SLT SB 3. 54 ETH/DEE

 

[Evan A. Beck]

That was me that dynoed at 350 HP with DD3's, PSA, and a straight pipe. The truck dynoed stock at 234/489, not bad for a stock ETH.

I believe the PSA adds a slight amount of power when the truck is moving, but on a dyno it adds virtally nothing but a really cool sound. #ad


EGT's when the truck was stock were 1250° maximum. Boost was 23 lbs. With the modifications, EGT's have yet to get above 1100°. Boost is 37 lbs.

 

[BV]

FYI (right out of my text book):
Additional hp is lost at high altitudes and during hot weather due to a reduction in air density. Therefore, when testing a vehicle on a chassis dynamometer derate naturally aspirated and supercharged engined 25% for parasitical loads, 3% for each 1,000 feet above sea level, and 1% for each 10 degrees above 60 degrees F.
A different procedure must be used to derate turbocharged engines for altitude than used to derate naturally aspirated and supercharged engines. This is because the turbocharger impeller turns faster in the thin air of high altitudes than it does in the denser air at sea level. This results in fairly uniform engine intake air pressure up to several thousand feet of altitude. Turbocharged engines, therfore, do not require fuel derating for altitudes below the levels specified by engine manufactures.

 

[Diesel Freak]

TTT

wow this is old!