This shows the 3 runs I made (run3 didn't record any RPM data and was thrown out). Nothing was changed between runs for the result of making sure the runs are consistant. (which the graphs clearly show)
This graph picks out the Actual data from the last run and shows the Peak and Average data for both HP and Torque. I was VERY surprised to see the car/motor make such good average power across the test RPM range, even out to and beyond 6000 RPM! This really contridicts the notion of TPI (at least stock) making no useful power beyond the ~4800 RPM range. (The TPI currently consists of 58mm TB, fully ported plenum, AS&M largetube runners, and highly ported Edelbrock base)
The raw numbers pulled from the above graph are listed below:
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AVG.
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291.5
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269.5
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Through published engine dyno info on the ZZ4/HOT cam combination, I was assuming I was pulling about 380-390 HP at the flywheel. Estimates of Automatic transmission drivetrain losses are usually given as 20-25% which would estimate my car as having 285-312 rwHP. The major unknown was the TPI, since not much Mfg. data can be exactly correlated between the factory carburator testing, and real-world TPI cars.
Quarter-mile ET/MPH HP estimating formulas usually would put me in the
310-340 rwHP range given my best ET/MPH (12.85 sec / 106.95 mph) and
my driven weight of 3680 lbs.
Diacom scans from the 4 runs show knock/retard at 3200rpms which I
traced to a large jump in the ARAP PE spk-adv table I had copied over
to my MAP chip base. I have since remove it.
Runs 1 and 2
Runs 3 and 4