I have some coil on plugs (aka coil packs). One is bad for sure... but not CEL. Two are 3 days from doom. The last is probably just fine. All have 130k miles. If you need one to test with... this will work. If you need 3 that will limp you into the next state... this will work. If you need 4... just stay the **** out of boost. All still free. New vs Old.