Loss power all I changed was tires ?
10-22-2012, 09:08 AM
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Loss power all I changed was tires ? Maybe kind of a newb question but I'm down some whp car feels the same as before pulls hard like before. i got on the dyno and it says I'm down 35 whp. Wtf. I change from a 285/30/18 street tire to a 305/35/18 mt radial also they kept having issues with tach signal and dropping signal mid pulls I have msd 8.8 wires. Any incite would be appreciated thank you.
10-22-2012, 09:44 AM
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I made more power on a mustang dyno by 35 whp with street tires than on this dyno jet with drag radials. Now the main diff I noticed was the place that read lower went with tach signal and kept having crazy weird readings breakin up Etc I have heard that msd wires will do this but am not sure that's a myth or not. Weather conditions were way better with the dyno I made less power with 30* cooler had a big fan in front of it. This was also at the end of a dyno day as well and their wideband wasn't even correct.
Last edited by 370cidZ06; 10-22-2012 at 12:21 PM.
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10-22-2012, 06:47 PM
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True however the mustang dyno reads less than this dyno jet and I made more on the mustang dyno so I'm boggled. I know because three people I know of gained 4-6% power on the dyno jet from the mustang. I mean car pulls fine only thing I can think of is the tires or my plug wires causing their dyno to geek out. O well I think I'm gonna borrow some street tires and see if what everyone is saying is fact or fiction.
10-22-2012, 08:22 PM
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Some dynos can be manipulated to show higher or lower numbers...I'd say your mustang dyno shop is tryin to make their numbers comparible to a Dynojet, and in doing so, has too much correction added to make the numbers higher. I would trust your dynojet numbers...
The fluctuating torque numbers are probly just a bad tach signal reading...happens alot.
The fluctuating torque numbers are probly just a bad tach signal reading...happens alot.
10-22-2012, 10:22 PM
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True however the mustang dyno reads less than this dyno jet and I made more on the mustang dyno so I'm boggled. I know because three people I know of gained 4-6% power on the dyno jet from the mustang. I mean car pulls fine only thing I can think of is the tires or my plug wires causing their dyno to geek out. O well I think I'm gonna borrow some street tires and see if what everyone is saying is fact or fiction.
FACT or Friction! LOL!
