IAM and Knock Issues: OFT Stage 2+/ Stage 2 + E85 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

DunkThemMuffins · 12-09-2021, 08:45 PM

Howdy all,
I've been running the OFT Stage 2+ and Stage 2+ E85 for a while now. I took all of the precautions mentioned in the various E85 guides posted here. I went back to the Stage 2+ 93 tune once I noticed some knock correct in the range of 0.68-2.XX. Very rarely would it ever exceed 0.68, but it would only ever ping in the range of ~3100-3600RPMs with steady throttle inputs (ie. highway cruising, 6-12% throttle); but NEVER under full throttle. Happens on the 93 tune as well.

I have a Mishimoto cold air intake, Borla UEL catless headers (no leaks, checked already), and I haven't scaled my MAF. What should I be doing to fix this?

Disclaimers: I've never used RomRaider, scaled a MAF, nor do I have any tuning experience. Open to anything, willing to learn and be called an idiot.

steve99 · 12-11-2021, 01:54 AM

This is wuite common on oft tune some knock at crusing speed and light throttle , can be a result of aftermarket intakes as well

There is a number of fueling timing and maf scaling mods that can ve done to fix the issues.

message me if you need modified tune

12-09-2021, 08:45 PM	#1
DunkThemMuffins Member Join Date: Feb 2021 Drives: 2014 BRZ Limited, WRB Location: FL Posts: 22 Thanks: 2 Thanked 12 Times in 9 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	IAM and Knock Issues: OFT Stage 2+/ Stage 2 + E85 Howdy all, I've been running the OFT Stage 2+ and Stage 2+ E85 for a while now. I took all of the precautions mentioned in the various E85 guides posted here. I went back to the Stage 2+ 93 tune once I noticed some knock correct in the range of 0.68-2.XX. Very rarely would it ever exceed 0.68, but it would only ever ping in the range of ~3100-3600RPMs with steady throttle inputs (ie. highway cruising, 6-12% throttle); but NEVER under full throttle. Happens on the 93 tune as well. I have a Mishimoto cold air intake, Borla UEL catless headers (no leaks, checked already), and I haven't scaled my MAF. What should I be doing to fix this? Disclaimers: I've never used RomRaider, scaled a MAF, nor do I have any tuning experience. Open to anything, willing to learn and be called an idiot.

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12-11-2021, 01:54 AM	#2
steve99 Banned Join Date: Dec 2013 Drives: FT86 Location: Australia Posts: 7,998 Thanks: 1,035 Thanked 4,987 Times in 2,981 Posts Mentioned: 598 Post(s) Tagged: 2 Thread(s)	This is wuite common on oft tune some knock at crusing speed and light throttle , can be a result of aftermarket intakes as well There is a number of fueling timing and maf scaling mods that can ve done to fix the issues. message me if you need modified tune

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