Questionable Dyno figures on my AP1...
01-12-2007, 09:50 AM
#21
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Originally Posted by negcamber,Jan 12 2007, 10:43 AM
You might want to get a compression test. Those are pretty low. The 18" wheels are hurting you, but it should not be that much. Note that the DynaPack takes the reading at the hub, so it should eliminate hp drag caused by wheel weight.
Yup the person that handled the dyno said it wouldn't affect the result with the 18's, if it should then it would be that much.
What's better, dynapack or the dynojet?
01-12-2007, 10:27 AM
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I would stay with the dynojet since the dynopack seen to read a little higher #. I just dyno mine the other day on the dynojet with I/H/E+ testpipe and vafc2 wideband tuning and i only get 210whp with a lean a/f ratio, and so i had to settle for lesser than 210whp to make the a/f ratio perfect @ 202.4whp
after 10 runs on the dyno and kinda disappointed. After that I went home and
did the compression check and it's seen to be good. turned out i think it's because my header manifold gasket is leaking just a little bit when i swapped the Rick's header(using the old gasket
). But yes, 177whp is kinda too low....but then again it doesn't mean a thing.
Oh, about the compression test. Go to any auto part stores and ask for a compression test.
Go home...open the spark-plugs cover and then un-plug all of the connectors to the coil-pack.
Pull all of the coil-pack out of the spark-plugs....just take ones of the spark-plug out (keep the other 3 in there).
Screw the compression test into the hole that you just took out the spark-plug (make sure everything is properly secure)....then start to crank the car up for couple time....then check your compression gauge for the pressure reading. Then do the other three cylinders the same way....but make sure that you screw the other spark-plug back into it cylinder before
start on the next ones. Record all of the reading on all 4 cylinders, if it's pretty close # or the same # then you are ok.
after 10 runs on the dyno and kinda disappointed. After that I went home and
did the compression check and it's seen to be good. turned out i think it's because my header manifold gasket is leaking just a little bit when i swapped the Rick's header(using the old gasket
). But yes, 177whp is kinda too low....but then again it doesn't mean a thing.Oh, about the compression test. Go to any auto part stores and ask for a compression test.
Go home...open the spark-plugs cover and then un-plug all of the connectors to the coil-pack.
Pull all of the coil-pack out of the spark-plugs....just take ones of the spark-plug out (keep the other 3 in there).
Screw the compression test into the hole that you just took out the spark-plug (make sure everything is properly secure)....then start to crank the car up for couple time....then check your compression gauge for the pressure reading. Then do the other three cylinders the same way....but make sure that you screw the other spark-plug back into it cylinder before
start on the next ones. Record all of the reading on all 4 cylinders, if it's pretty close # or the same # then you are ok.
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