Does my ECU auto learn without reset? - Page 2 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

phrosty · 07-23-2015, 07:12 PM

resetting ECU is the difference between re-learning from 0 LTFT vs +2 LTFT.

LTFT actually adjusts very quickly. I wouldn't worry about it, just don't go WOT right away.

Poodles · 07-23-2015, 09:36 PM

Quote:

Originally Posted by timmydatooth

Bringing this back. Im putting a cat back exhaust on my frs this weekend. Is the ecu reset really necessary? The answers ive seen have been all over the place. Will the ecu eventually learn by itself over time? I just dont feel like redoing all my settings on the radio lol

Cat back isn't going to do much, so no need to reset. ECU is constantly retuning anyway.

Also, if the FRS radio is anything like the BRZ, the settings are saved. Dash settings aren't though.

Wayno · 07-24-2015, 01:11 AM

Higher flow intakes are a myth. Besides perhaps GS, in which case you don't need to rescale MAF. The PERRIN ones can royally screw your AFR without tuning. The ECU can't learn MAF scales.

07-23-2015, 07:12 PM	#15
phrosty Senior Member Join Date: Apr 2013 Drives: 2013 FR-S Location: Seattle Posts: 806 Thanks: 202 Thanked 321 Times in 199 Posts Mentioned: 18 Post(s) Tagged: 1 Thread(s)	resetting ECU is the difference between re-learning from 0 LTFT vs +2 LTFT. LTFT actually adjusts very quickly. I wouldn't worry about it, just don't go WOT right away. __________________ 2013 Whiteout 6AT FR-S \| Perrin Inlet Tube + 2.75" CAI \| OpenFlash Header \| P&L Catback \| 4.88 Final Drive \| Dialed in OFT 2.0x Stage 2 E85 \| 18x8 Enkei Raijin + 225/40 Michelin Pilot Super Sport \| 17x7 Stock + 215/45 Michelin X-Ice Xi-2

07-24-2015, 01:11 AM	#17
Wayno Senior Member Join Date: Apr 2014 Drives: Toyota 86 GTS Location: Australia Posts: 1,129 Thanks: 453 Thanked 896 Times in 424 Posts Mentioned: 211 Post(s) Tagged: 0 Thread(s)	Higher flow intakes are a myth. Besides perhaps GS, in which case you don't need to rescale MAF. The PERRIN ones can royally screw your AFR without tuning. The ECU can't learn MAF scales. __________________ rom downloads, information and examples Toyota 86 GTS OFT - Guide To Dialling In OTS Base Tune OFT - Example Alternate Maps for AT, 98RON, E85, MAF Scales

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