Disappointing Dyno Numbers
11-05-2016, 03:50 PM
#1
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Disappointing Dyno Numbers
My J2 dynoed at 132whp 131ftlb
Then I added a mildly p&p'ed Beta 2 head, shaved 40 thousandths. And installed 1.8 pistons.
Today It made 136whp and 135ftlb... Massive 3% gain... Was I wrong to be expecting more than 4whp?
Then I added a mildly p&p'ed Beta 2 head, shaved 40 thousandths. And installed 1.8 pistons.
Today It made 136whp and 135ftlb... Massive 3% gain... Was I wrong to be expecting more than 4whp?
11-06-2016, 01:57 AM
#3
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Vehicle: 2000/Hyundai/Coupe F2 Evo
running my cams 6 degrees advanced in my beta 2 head which moved the powerband nicely in to play. Even at 3 degrees advanced the power was still rising when it ran out of revs
11-06-2016, 05:34 AM
#5
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The car ran 12.2-12.8 afr 4,000-6750 rpm. So it should be a better tune than the first dyno.
Ignition timing is between 25-28 at wot. Although I don't have a way to adjust that.
What makes this even worse is all dyno runs were done on a Dynojet in 3rd gear.
Ignition timing is between 25-28 at wot. Although I don't have a way to adjust that.
What makes this even worse is all dyno runs were done on a Dynojet in 3rd gear.
11-06-2016, 11:54 AM
#7
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Vehicle: 97' Hyundai Coupe
AFR is not the most important thing if you ask me. Ignition timing is the real deal ! When I hit the dyno later this month I will show you the difference 
P.S how do you know that the ignition timing is 25-28 at WOT ?
P.S how do you know that the ignition timing is 25-28 at WOT ?
11-07-2016, 03:50 PM
#8
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@Rob40 mostly just cleaned them up.
@Blitz I monitor timing using the Torque app via the obd2 plug. Yes I realize timing makes a huge difference. Even with stock ignition timing I thought I would get more of a gain. I figured the ~12:1 compression alone would get me +3% Whp.
@Blitz I monitor timing using the Torque app via the obd2 plug. Yes I realize timing makes a huge difference. Even with stock ignition timing I thought I would get more of a gain. I figured the ~12:1 compression alone would get me +3% Whp.
11-07-2016, 06:23 PM
#9
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Vehicle: Two Accents, Mini, Miata, Van, Outback, and a ZX-6
I've had almost 20% variation in the same car with same mods on different dynos in the GK. I've had around 10% variations from day to day on the same dyno. If everything else seems pretty good the dyno gods might not have smiled on you.
