16 or 32 bit ECU? Should I lean the air if.... - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

chazmuska · 07-12-2017, 06:54 PM

Do we have a 16 Bit ECU or 32 Bit ECU? The reason I ask is because the IAM (Ignition Advance Multiplier) has a range of 0-1 for 32bit ECU's vs 0-16 range for a 16bit ECU. Just wanted to know what to expect when datalogging.

Also, since my car is bone stock running a Stage 2 EL map on E85 fuel...can I be "expecting" to decrease my g/sec values when trying to do a MAF Scaling. My logic of thinking is since I'm pumping less air, compared to a car with intake/ exhaust performance parts, the values from Shivs map would be higher since the Stage 2 map had aftermarket parts which are essentially moving a lot more air than stock setup right....so the g/s (grams/sec) values should be less right?

steve99 · 07-12-2017, 07:38 PM

32 bit ecu
Maf scaling is calibrating the maf flow, this o nly cganges if you change maf housing , ie change intaje

See coloured links below

chazmuska · 07-12-2017, 07:48 PM

Quote:

Originally Posted by steve99

32 bit ecu
Maf scaling is calibrating the maf flow, this o nly cganges if you change maf housing , ie change intaje

See coloured links below

Awesome, thanks for that clarification!

07-12-2017, 06:54 PM	#1
chazmuska Member Join Date: Dec 2016 Drives: 2014 Scion FR-S Location: Arizona Posts: 80 Thanks: 19 Thanked 21 Times in 12 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	16 or 32 bit ECU? Should I lean the air if.... Do we have a 16 Bit ECU or 32 Bit ECU? The reason I ask is because the IAM (Ignition Advance Multiplier) has a range of 0-1 for 32bit ECU's vs 0-16 range for a 16bit ECU. Just wanted to know what to expect when datalogging. Also, since my car is bone stock running a Stage 2 EL map on E85 fuel...can I be "expecting" to decrease my g/sec values when trying to do a MAF Scaling. My logic of thinking is since I'm pumping less air, compared to a car with intake/ exhaust performance parts, the values from Shivs map would be higher since the Stage 2 map had aftermarket parts which are essentially moving a lot more air than stock setup right....so the g/s (grams/sec) values should be less right?

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07-12-2017, 07:38 PM	#2
steve99 Banned Join Date: Dec 2013 Drives: FT86 Location: Australia Posts: 7,996 Thanks: 1,035 Thanked 4,992 Times in 2,983 Posts Mentioned: 598 Post(s) Tagged: 2 Thread(s)	32 bit ecu Maf scaling is calibrating the maf flow, this o nly cganges if you change maf housing , ie change intaje See coloured links below

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