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Engine light
07focus_st Offline
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#1
Question  07-13-2012, 08:35 AM
Hey guys quick question I have the sct flasher for 2 yrs now running 91 but I down graded my gas to 87 stock cause I drive to work now but once I put the car to stock I had an engine light code P0455 I cleared it with sct and came back so I tried something using 87 with the custom tune and no engine light why is that
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ZTWsquared Offline
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#2
07-13-2012, 08:42 AM
(07-13-2012, 08:35 AM)07focus_st Wrote: Hey guys quick question I have the sct flasher for 2 yrs now running 91 but I down graded my gas to 87 stock cause I drive to work now but once I put the car to stock I had an engine light code P0455 I cleared it with sct and came back so I tried something using 87 with the custom tune and no engine light why is that

Hard to figure - IIRC that's the gas cap code.
2008 Fusion SEL MTX - DD1 * 2009 Fusion SEL - DD2 * 2007 Focus ZXW - R*I*P * 2004 Focus ZTW CD Silver - sold * 2004 Focus ZTW Black - sold * 2003 Focus ZTW Black - sold * 2001 Focus ZTW Gold - sold * 2000 Focus SE Wagon (ZTW option) - Black - sold * 2000 Focus SE Wagon (ZTW option) - Gold R*I*P

2003 Focus ZX5 infra-red Track Rat - R*I*P
2003 ZX5 CD Silver Track Rat - retired, but still in the driveway

New track rat: 2000 ZX3, Atlantic Blue * JRSC with lots more to come

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GFXjamie Offline
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#3
07-13-2012, 10:57 AM
Do you have a header?
2007 ZX4 2.0l unaturally aspirated
FSwerks stage 2 Turbo kit, Cosworth Intake Manifold, 3" custom HKS turbo back
regular stage 2 @10ps : 232whp/219wtq
stage 2 plus @ 13psi: 278whp/229wtq
Stage 2 plus @15psi: 296whp/240wtq

2013 Focus ST Tuxedo Black - The daily
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Mystake Offline
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#4
07-15-2012, 04:56 AM
If its gas cap then it could be a vacuum leak at the egr, if your tune disables it. (which woul be why it goes away when the tune is back in)
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