Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - 19bonestock88’s octane experimentation thread

19bonestock88 · 04-30-2019, 11:41 PM

So after hearing from multiple sources that Saturns tend to run better on 91-93 octane fuel than they do on 87 I decided to try it and do a little scientific testing to prove one way or the other if there is any benefit and perhaps get a feel for how much...

So far I’ve pumped almost 30 gallons of 93 into the car and have began instrumented testing, after which I’ll return to 87 and after a similar period for the PCM to potentially learn the difference, repeat the testing...

The original post below...
https://www.saturnforum.com/forum/sa...659/#post62033

And the pic of the timing curve that I logged and hand graphed

04-30-2019, 11:41 PM	#1 (permalink)
19bonestock88 Master EcoModder Join Date: Jun 2016 Location: KY Posts: 1,351 IGL - '04 Saturn Ion Team Saturn 90 day: 56.19 mpg (US) Thanks: 63 Thanked 365 Times in 268 Posts	19bonestock88’s octane experimentation thread So after hearing from multiple sources that Saturns tend to run better on 91-93 octane fuel than they do on 87 I decided to try it and do a little scientific testing to prove one way or the other if there is any benefit and perhaps get a feel for how much... So far I’ve pumped almost 30 gallons of 93 into the car and have began instrumented testing, after which I’ll return to 87 and after a similar period for the PCM to potentially learn the difference, repeat the testing... The original post below... https://www.saturnforum.com/forum/sa...659/#post62033 And the pic of the timing curve that I logged and hand graphed __________________ My current Ecotec project... My last Ecotec project...