Well all I can say is DONT USE OCTANE BOOST IN A ROUSH SUPERCHARGED ENGINE!!!

I added a bottle to mix with the 1/2 tank of 87 and 1/2 tank of 93. Well after about 20 miles of driving Check engine light came on and the Scanner says I have a missfire of cylinder 3 and 4 etc.

Just had the truck towed to the ford shop again. Dont know whats this little mistake is gonna cost me but oh well you live and learn by your mistakes.

How much is that gonna cost? Prolly more then a full tank of high octane gas eh?

The octane boost should not have anything to do with the misfire and either the use of high octane gas.

Yeah, i was gonna say that earlier, but the boss walked by, and I forgot. It'* been pointed out here before that the only thing that Octane Booster does is lighten your wallet....

So were you actually noticing the misfire? What plugs/gaps are you running and seeing as it'* a Roush install, it should be covered under warranty methinks.

Well It was towed to the dealer yesterday afternoon and I am wainting for a call back hopefully today. I will keep everyone posted...........hope it does not cost me too much.

It could be an installation issue when they install the SC, therefore it would be covered by the warranty.

Just picked the truck up last night. The tech was not there cause it was after hours but I was told the new plugs they put in when I got kit installed were not compatible so they had to put the OEMs back in. Strange thing is there is alot louder whine now than there was before? Sounds like my truck needs a powersteering pump everytime I step on the gas. Well hope it holds up longer than 2 days this time.