[mrsmoke515]

Originally Posted by TunafishE93

What changed a couple months ago?

That was in November before I put the car away for winter. when I pulled the car back out a couple weeks ago with the old mhd tune is when the corrections started. I thought swapping tunes would help but I don’t think that had anything to do with it.

[TunafishE93]

Originally Posted by mrsmoke515

That was in November before I put the car away for winter. when I pulled the car back out a couple weeks ago with the old mhd tune is when the corrections started. I thought swapping tunes would help but I don’t think that had anything to do with it.

Fuel will degrade sitting, when i winterize my boat/motorcycle for the season they say to make sure you have a full tank, i dont agree. I will run a few things of heet (yellow) in them but keep tank lower than quarter tank. This way I can add good full to them when i pull them out from storage.
Not sure if you ran out the old fuel but something to keep in mind.