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Engine Stage 1
TEST 6 – As Per TEST5 plus remapping- Comments
TEST 6 +41.2bhp +28.54lbft (peak) over Base Line
TEST 6 - 00.6bhp +16.37lbft (peak) over TEST5
First off, no matter what we did we could not eliminate the Surge in it’s entirety. It was reduced, but not eliminated and certainly not reduced enough to be acceptable.
Again, to try and reduce the Surge (as well as any ignition and cam timing adjustments) boost targets were profiled slightly differently, but were increased back to previous targets.
Peak figures for Torque were now getting back up, so at least adjustments that had been made were positive ones.
Looking at the Power Graph above, the comparison shows some negative and some positive results. Since the Graph achieved during TEST3 was deemed to be the best overall result and certainly proved to be the best on-road result so far, it made sense to use that as a comparison.
What jumps out is the decrease in BHP and Torque during TEST6 against TEST3 up to 3600 rpm. Resulting in up to 30bhp and 50lbft decreases in places. However, on the positive side increases can be seen from 4800 rpm through past 7000 rpm. Resulting in up to 13bhp and 15lbft increases in places.
Conclusions drawn from this test highlighted that investigation now needed to be made around the Induction Kit and replacement Inlet pipe.
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