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16ssFR · 03-13-2024, 05:15 PM

Mods: LT2 manifold, Roto Fab CAI, Headers, X pipe , DSX Flex Fuel Sensor, and Tune.
Has new spark plugs and wires. Also tried moving around wires and spark plugs but no luck.

The misfire only happens on E85 and when I pump 93, it goes away. Checked logs on scan tool and only happens on cold start at arounf 1,200 RPM. Seems to be only happening on cylinder 2. Cylinders 4, and 8 have maybe 10 misfires but hundreds on cylinder 2.

During tune logs, Throttle body would open 56% at WOT. Saw in another forum that having a stock 87mm TB may cause the issue. Ordered a 95mm TB but want to get some feedback.

Any help would be really appreciated.

03-13-2024, 05:15 PM	#1
16ssFR Drives: 2016 Camaro 2ss Join Date: Jun 2022 Location: Chicago Posts: 4 View My Garage	Misfiring on E85 Mods: LT2 manifold, Roto Fab CAI, Headers, X pipe , DSX Flex Fuel Sensor, and Tune. Has new spark plugs and wires. Also tried moving around wires and spark plugs but no luck. The misfire only happens on E85 and when I pump 93, it goes away. Checked logs on scan tool and only happens on cold start at arounf 1,200 RPM. Seems to be only happening on cylinder 2. Cylinders 4, and 8 have maybe 10 misfires but hundreds on cylinder 2. During tune logs, Throttle body would open 56% at WOT. Saw in another forum that having a stock 87mm TB may cause the issue. Ordered a 95mm TB but want to get some feedback. Any help would be really appreciated.