Is engine knock normal for the FA20? - Page 2 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

wparsons · 05-20-2013, 10:08 AM

^^ the logs are from light throttle cruising, and happening on the stock map too according to the OP. If this was WOT I'd blame the tune, but seems pretty normal at light throttle.

Dynotronics1 · 05-20-2013, 01:24 PM

Quote:

Originally Posted by wparsons

^^ the logs are from light throttle cruising, and happening on the stock map too according to the OP. If this was WOT I'd blame the tune, but seems pretty normal at light throttle.

I repeat what I said above, there should be little or no KR at any point, assuming the tuner is doing the calibration correctly.

FRSFirestorm · 05-20-2013, 01:46 PM

Let me preface this with I have no experience tuning nor do I have software to do so on this platform.

When I was tuning my personnel GM vehicle I had a persistant knock event, low load and at cruise that I chased for months in the tune to no avail. At some point I had the blower off and found considerable amounts of engine oil coating the entire intake track.

After installing an oil catch the issue went away. Theory being oil was hitting the combustion chambers and iniating knock.

Just a thought.

Tim_Asphalt_FRS · 05-20-2013, 02:12 PM

Quote:

Originally Posted by FRSFirestorm

Let me preface this with I have no experience tuning nor do I have software to do so on this platform.

When I was tuning my personnel GM vehicle I had a persistant knock event, low load and at cruise that I chased for months in the tune to no avail. At some point I had the blower off and found considerable amounts of engine oil coating the entire intake track.

After installing an oil catch the issue went away. Theory being oil was hitting the combustion chambers and iniating knock.

Just a thought.

Yeah, my engine seems to run better since I installed a catch can too. I caught some oil in the 1000 miles since then. My exhaust tips don't get dirty either. I'm still on stock tune.

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05-20-2013, 01:46 PM	#17
FRSFirestorm Red is Fastest Join Date: Dec 2012 Drives: 13 FRS 6MT Firestorm Location: Central Kentucky Posts: 439 Thanks: 85 Thanked 242 Times in 120 Posts Mentioned: 11 Post(s) Tagged: 0 Thread(s)	Let me preface this with I have no experience tuning nor do I have software to do so on this platform. When I was tuning my personnel GM vehicle I had a persistant knock event, low load and at cruise that I chased for months in the tune to no avail. At some point I had the blower off and found considerable amounts of engine oil coating the entire intake track. After installing an oil catch the issue went away. Theory being oil was hitting the combustion chambers and iniating knock. Just a thought.

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