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Our fuel is definately worse than American fuel. It has been proven on our dyno countless times with US based tunes detonating on the dyno. We recently conducted a test of our Chevron 94 vs. US Chevron 92 on one of our employee's 2002 stock Subaru WRX. The subaru is a good test vehicle because it has exceptional knock detection and is viewable on our datalogger.
The first series of tests were conducted at equal boost and ignition timing values with no knock detected.
Test 1 - US Chevron 92 octane:
We did 7 back to back dyno runs with which varied from 170-172whp.
Test 2 - CDN Chevron 94 octane:
We did another 8 back to back runs which varied from 162-164whp.
Surprisingly that's around a 5% difference in power at the same boost level and ignition timing value. Another interesting fact was that the US 92 ran slightly leaner than our 94 which must of contributed to the power gain.
This test didn't tell us anything about the detonation resistance of our 94 versus the US 92 but interesting data none the less. We will be conducting more tests down the road and will be posting the results under this section.
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S14 240SX: 2JZ swap/w BorgWarner S366 Turbo/hks264's/Haltech E11 / 626rwhp and 523rwtq @24 psi
Shawn
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