Stock 2.2 Dyno Graph
11-20-2006, 10:28 PM
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Stock 2.2 Dyno Graph
Stock Hp: 112.2 @5335
Stock TQ: 117.2 @4089
Just over 6000 miles on an 06 Cobalt 2.2 5-speed with the only change being Mobil 1 Synthetic.
11-20-2006, 11:04 PM
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As far as the dyno-meter accuracy between the MD and DJ.......
Performance shops use little tricks such as changing the vehicles weight input (even a hundred pounds will skew the numbers quite a bit) to show the part they just sold you did something for horsepower gains.
I dont have a problem w/ either one, they are both industry leaders, the main problem is inept or corrupt operators. If you go on a Load Control Dyno, your car better be weighed, with the person in it doing the testing. Go over all the parameters with the operator to make sure you are getting what you paid for. Because if the parameters are set correctly on both dynometers the numbers should always come out within a few hp frome each other.
Keep in mind though that the Mustang Dynometer is a true loading dyno that uses eddy current motors....so I would trust the numbers to be more accurate than a dynojet which uses simple inertia to measure power levels.
Performance shops use little tricks such as changing the vehicles weight input (even a hundred pounds will skew the numbers quite a bit) to show the part they just sold you did something for horsepower gains.
I dont have a problem w/ either one, they are both industry leaders, the main problem is inept or corrupt operators. If you go on a Load Control Dyno, your car better be weighed, with the person in it doing the testing. Go over all the parameters with the operator to make sure you are getting what you paid for. Because if the parameters are set correctly on both dynometers the numbers should always come out within a few hp frome each other.
Keep in mind though that the Mustang Dynometer is a true loading dyno that uses eddy current motors....so I would trust the numbers to be more accurate than a dynojet which uses simple inertia to measure power levels.
11-20-2006, 11:33 PM
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Funny you should say that sethallen. Brand new civic si was up just before me and I actually made 2-3 ft lbs more than he did only at a much lower rpm than him. He also made 15x horses at well over 7000 rpms. Just a vast difference in how the two motors are designed. But I paid about half of what he did! Oh, and I thought 112 was about right given the drivetrain loss. Can't imagine I would only lose 15 hp from flywheel to tires. 130 would be nice but I don't think the little 2.2 can put that to the wheels stock.
11-28-2006, 08:41 PM
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Originally Posted by thebeav2904
I don't want to sound stupid, I know a good bit about cars, but if the 2.2 is rated at 145hp 155tq why dont you get that in the dynos?
11-28-2006, 08:47 PM
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Originally Posted by g5mike
manufacturers get their hp ratings from the crank not the wheels,guys dyno to get the (TRUE) numbers to the wheels.
11-28-2006, 08:55 PM
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Originally Posted by artawesome
explain this to me please. this is one area that confusses the hell out of me.
Wheel HP is how much power the motor is putting down connected to components such as the transmission which delivers the power to the shafts and then to the wheels.
An accurate estimation of how much your getting to the ground is determined by a Dyno.
Dyno's are never more then 5% off unless operator error. Scenarios change often. More or less weather conditions dictate how much a car can put out in that run.
11-28-2006, 10:24 PM
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one more thing....its troubling me on weather or not i should get a AEM cold air intake for x-mas...for about $250....
any other worthwhile spendings for that much money...any help would be appreciated
any other worthwhile spendings for that much money...any help would be appreciated
12-03-2006, 03:38 AM
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Well.....i dont have the scan yet of the sheet, but i dynoed my car on wed with an intake using DynoJet and the numbers read 128.6Hp and 138.6Tq........i was happy....and i know i am not getting jerked around because of the reputation the shop has.....
