Pro Mouse

iTrader: (15)

Well my 408 was was retuned today and down 30 hp and 10 Footpounds of torque from last year.Tuner said timing was on and AFR was dialed right in to 12.6-12.8.He said its running great from what he could see.My engine builder and I feel like its only running on 7 cylinders.My Tuner said it could be possibly a bad injector(Maybe pluged somewhat)maybe Bad Fuel? Who knows.Could it be a bad spark plug?Because my HP Tuners does not show number 8 in current firing cylinder.I know the Coil and wire is good by checking it the old way.That thing shoots a spark about 3 inches long could go farther if I let it.Could a plug be to week in number 8 to show not currently firing?What do you Guys think I should look for? Thanks for the Help