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 Old 10-06-2014, 09:06 AM   #1
 
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Default CEL during road trip, random cylinder misfires?

Soooo late last night on the way back from a road trip to ATX, I noticed a check engine light come on. We switched drivers and I checked for codes on my AP and noticed a "PCM" code as well as a "cylinder misfire" code. Although I couldn't sense any sort of loss of power or hear misfires I decided to switch back to stock (stage 0) map. CEL went away and the car drove like it always has. From my searching, I've deduced it may be due to spark plug gap or possibly running rich. NOTE: I have HPFP internals and have been running a stage 1 cobb OTS map for 2 weeks before this happened. I data logged and fuel pressure was above 1700 and had 0 KR. Also, this happened within minutes of me refilling with Shell 93 octane. What could be the cause of this? I drove back home on the stock map and so far no codes and engine seems fine. Refilled with 93 but have yet to reflash to stage 1.
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2012 MS3 w/Tech Package

Engine: CS SRI/Tip, AutoTech internals, Damond Banjo Bolt, JBR Boost Tubes, E-Focus Mount, CS Racepipe, Tuned by FREEKTUNE

Trans: CS insert, CS bushings, Damond Shifter Plate

Suspension: Koni Orange with OEM springs, Konig Controls 17x7 with 225/45 Conti DW's

Appearance: CP-E Relocation Plate, Smoked Taillights, Bumper Guard, CS Steering wheel/Shift knob/E-brake handle,dumb stickers

Last edited by AveryPlaysBass; 10-06-2014 at 06:13 PM.
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