Relative Dyno numbers!
Thread Starter
Happy CL-S Pilot
Joined: Jan 2001
Posts: 9,215
Likes: 1
From: Nashua, NH, USA
Relative Dyno numbers!
Miscellaneous thoughts regarding the Comptech headers: I ran the numbers RUF and I got on the dyno and compared them to the Comptech dyno numbers.
In round numbers, Comptech showed a 20% loss from the 260 horsepower figures. They showed stock at 208 hp at the wheels for stock (208/.8=260).
When the ran the test with headers, they showed a 24 horsepower gain, going to 232 hp. If you do the math, that shows an estimated 290 hp at the flywheel (232/.8=290).
RUF posted a 192 hp which would be 25% loss from 260. My 215 hp is a 23 hp gain. However, if you do the math for my 215 hp dyno using RUF's percentage, you still get 290 hp at the flywheel. Which tells me the dynos are in a different calibration but the results are basically the same relative gains.
And Mantis paid $350 for his OBX headers and posted 211 hp. Not a bad return on investment, really.
And look out, RUF, when I get new wheels, I intend to make you work harder for your wins!!! Obie Wan, I can feel the force...
What a great weekend! Inferno
In round numbers, Comptech showed a 20% loss from the 260 horsepower figures. They showed stock at 208 hp at the wheels for stock (208/.8=260).
When the ran the test with headers, they showed a 24 horsepower gain, going to 232 hp. If you do the math, that shows an estimated 290 hp at the flywheel (232/.8=290).
RUF posted a 192 hp which would be 25% loss from 260. My 215 hp is a 23 hp gain. However, if you do the math for my 215 hp dyno using RUF's percentage, you still get 290 hp at the flywheel. Which tells me the dynos are in a different calibration but the results are basically the same relative gains.
And Mantis paid $350 for his OBX headers and posted 211 hp. Not a bad return on investment, really.
And look out, RUF, when I get new wheels, I intend to make you work harder for your wins!!! Obie Wan, I can feel the force...
What a great weekend! Inferno
Suzuka Master
Joined: Nov 2000
Posts: 7,388
Likes: 1
From: Ninth Gate & So Cal
Re: Relative Dyno numbers!
Originally posted by Nashua_Night_Hawk
What do you think?
What do you think?
Dynos in different calibration -- I don't think so... I had some thought about that when everyone has returned with dyno figures all over the map. However, Dynojet claims the "dynos" are supposed to be accurate from location to location.
As to the operator -- that's a different story. And as to the environmental conditions -- that's going to change.
IMO, you could probably interpret the numbers in a number of ways and just end up speculating and speculating about what's happening...
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