Determining BSFC map from logged OBD2 data

fumesucker Determining BSFC map from... 05-28-2008, 11:50 AM

samandw You'd need something to... 05-28-2008, 12:37 PM

fumesucker Acceleration is simply... 05-28-2008, 08:28 PM

palemelanesian I'm thinking your best bet... 05-29-2008, 06:24 AM

fumesucker You could get a lot of nice... 05-29-2008, 07:24 PM

fumesucker I had planned on collecting... 05-29-2008, 07:03 AM

palemelanesian Now that I think about it,... 05-29-2008, 07:44 AM

fumesucker You have to know what the... 05-29-2008, 07:52 AM

palemelanesian Do you need to know the... 05-29-2008, 10:08 AM

fumesucker A vacuum gauge will give you... 05-30-2008, 03:50 AM

theholycow I should hope not. Except in... 05-30-2008, 05:36 AM

fumesucker I was trying to be nice. :) 05-30-2008, 05:59 AM

theholycow I can't directly control... 05-29-2008, 10:38 AM

monroe74 Sorry I've been away for a... 06-04-2008, 10:04 AM

fumesucker Use OBD2 to log speed, tps... 05-29-2008, 07:18 PM

fumesucker I got my ELM327 in the mail... 06-10-2008, 09:23 PM

monroe74 That's an interesting... 06-11-2008, 11:02 AM

fumesucker I haven't had time to do any... 06-12-2008, 04:10 AM

theholycow One piece of data that may... 06-12-2008, 05:51 AM

monroe74 I'm really not sure. I think... 06-12-2008, 01:18 PM

theholycow Yup, my 2008 VW is almost... 06-12-2008, 04:10 PM

fumesucker I guess I'm guilty of... 06-12-2008, 06:19 PM

monroe74 The ranks of the financially... 06-12-2008, 06:50 PM

fumesucker I appreciate your kind... 06-12-2008, 08:24 PM

derangedhermit SG has a load (LOD)... 06-26-2008, 09:30 PM

05-28-2008, 08:28 PM	#3
fumesucker Registered Member Join Date: May 2008 Posts: 211	Acceleration is simply difference in speed over time, that will be logged with OBD2 data. I'm looking at creating a spreadsheet that can take maybe ten miles worth of OBD2 driving log data over a known course and come up with a rough BSFC map, something to allow the driver to know where the fuel efficiency "sweet spot" is in the operating range of his engine.. I'm not looking for ultimate accuracy, just reasonable qualitative guesstimates . __________________ 94 Altima 5 spd.. Stock.. 29 mpg combined with basic hypermiling techniques .. 89 Yamaha FZR400 Crotch rocket, semi naked with only the bikini fairing, no lowers, 60 plus mpg 87 Ranger 2.3 5spd.. Does not currently run..

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