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I have now driven about 250 miles since I cleaned my MAF and changed my air filter and no CEL.
I have read on the PCA.org Q&A tech section that long term driving with your fuel air mixture being too lean or too rich due to a bad or dirty MAF can cause damage in that if it is too rich it can burn out your CATs.
I cleared my CEL with a code reader. I don't think the CEL will clear itself simply because the cause has been resolved.
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2000 Boxster S: 18" Turbo wheels w/color crests, Litronics, Onboard Computer, Traction control, Cruise, Painted rollbar, Leather interior, Aluminum package, headlight washers, Porsche GT3 seats, windstop, Hi Fi six speaker amp package, DSP, CDR 220, Limited Slip, side airbags, BK Rollbar extender.
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