987 Cayman/Boxster DIY, Service, Repairs 2005-2012
From time to time I have had codes for running lean, random and individual cyl. misfires. Last year replaced plugs and coils. It ran really well at my last D.E. in Oct. but on 12/3 I got the codes again. I erased them several times only to have come back. I took it to a shop and they found a...