Hey guys i will soon be ordering an xcalibrator and needed to know something. On the order form it says premium or regular gas. I'm going to be runnin 89 octane can they set the tune for 89? Also is 89 a good choice for someone who doesn't want cheapo 87 but foesn't want as fancy as 93?

 

.... just pay the extra dollar fifty and get 93 (or 91 if thats what they have in your area)

 

With the timing change that the xcal gives you, use the 93 octane, but you can also choose not to raise the timing and just use 87, but you wont get as much gain from it.

 

Just remember, the tune they give you is a very generic tune, since every car is different your results will vary. I also purchased an Xcal, be on the safeside and get a custom tune for your application on a dyno. Where it can be monitered with a wideband. I purchased mine from a local tuner (Kauffmans) just because they offer free reburns and have a dyno on site so we KNOW the tune is safe and effective..