It did fix that noise problem I had thoughThat's why I was afraid to switch over to the newer version. I'm happy the way it is now so like the old saying goes "if it's not broke don't fix it".
Not that long for me. I commuted in it every day when I added the tune an I liked to floor it to hear the tires chirp on the shifts so it got broke in fast.
No for winter I put the 87-89 tune in. My thinking is with slick roads an snow there's no need for the extra HP. This spring I'll put the 91-93 tune back in. You can feel the difference between the two but you can feel the difference between the stock tune on 93 an the performance tune on 87-89. Better performance an cheaper gas.
Honestly you could save yourself a bunch of headaches by installing the tow tune and simply switching octane as needed. Then you dont have to worry about the transmission relearn process either.
Since I've retired I've been staying in more an only buying gas every 2 or 3 weeks instead of every week so I may just stick to the 91-93 tune. Another reason for the lower octane tune was to save that $.60 a gallon for a while until I see how things go on my retirement income. I'm using so much less gas not driving 30 miles a day for work it's not a factor.
Ethanol is not shelf stable though, and what you get out of the pump is in the E50-E90 range. Hence why they say you need to test it first. For me E30 tunes are for Dyno brags.Yes but I am curious about what level or error is built in. But if I were to do it I have 4 5 gallon jugs. Fill them up and store in garage and get a testing kit to insure I knew what mix level was needed. Only do it when I wanted to have some fun
Its good for a certain period of time. Keeping moisture out is key.
