Had the ss dynotested. Confused!!!
Had the ss dynotested. Confused!!! Had my 02 SS tested yesterday on a mustang dyno and it showed 270rwhp and 346rwtq. I was also told that the motor is putting out 380hp. The car is bone stock. The guy at the shop was really surprised at the crank #'s but said the rwhp was at a normal level. I am confused at some of the numbers on here as well as my last dyno of a 98Z with only borla. My last dyno stated 317rwhp 358rwtq on the 98Z. does anyone have any ideas? Thanks Jeff
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From: Southaven, MS (near Memphis, TN)
Had my 02 SS tested yesterday on a mustang dyno and it showed 270rwhp and 346rwtq. I was also told that the motor is putting out 380hp. The car is bone stock. The guy at the shop was really surprised at the crank #'s but said the rwhp was at a normal level. I am confused at some of the numbers on here as well as my last dyno of a 98Z with only borla. My last dyno stated 317rwhp 358rwtq on the 98Z. does anyone have any ideas? Thanks Jeff
Its automatic. Yes it was a mustang dyno. The guy at the shop did some calculation and told me the 380hp #. I was surprised by that number as well, but he insisted that our cars are very under-rated from the factory. Believe me, I asked him a few times if he was correct with the 380hp diagnosis. It was funny because he looked at me and insisted that there were modifications to the car. I guess I don't understand the rwhp number of my car very well. Like I said I had a 98Z m6 with only borla and it dyno'd at 317rwhp. Not to mention that I paid 167 for the test. Doesn't seem worth it. Almost makes me want to sell the car.
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Your trap speed tells the real story here...that trap speed is well inline with what a stock-ish LS1 with an automatic tranny. Don't worry about the numbers...in this case, they are only clouding the water.
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Most stock auto's are in the 300 range on a dynojet, so considering 20% drivetrain loss, 360 would be a average crank hp. Your guys numbers weren't to far off. The RW numbers seem average for a MD.
+1.... trap of 104mph means everything is fine; don't get caught up in numbers.
I would go to a dynojet and make a few pulls there. the hp seems normal for an auto on a MD like stated above. What seems odd is that hp and then the tq, that seems lke a whole lot of torque from a stock auto on a MD, right? My m/6 made 351 ft. lbs with just a cat-back and lid on a dynojet.
Am I wrong here? Doesn't a MD tend to show lower hp and tq numbers?
Am I wrong here? Doesn't a MD tend to show lower hp and tq numbers?