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So this will take a little while. I usually run chev 94 and have for a long time, my tune is built around it. So I just filled up, reset my ECU and once I reach a half tank then I’ll do a few datalog pulls (I’ll try 4th gear 2500-6500 but that’s pretty high speed, so might do 3rd same rpm). Once I’m done, I’ll run the tank as low as I can, I’ll top up maybe $10 she’ll 93, let that run low, then fill up fully, clear ecu, at the half tank point do more datalogs etc.
The map is optimized for 94, so theoretically if the shell 93 is LEAGUES better you might not know, as the timing tables do have min/max windows to hit. It will be clear if it’s worse though. Between knock, timing, fuel trim, etc we should have a good idea
Edit: I’m doing this because ppl say the shell in Richmond has 93. I refuse to go into Vancouver so I wasn’t going to do this test
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