Out of the three custom tunes which one is the best suited for towing? I tow a trailer most of the week so that is a big concern to me. I didn't know if one is better that the other? It's probably been covered before.

 

You need to use a tow tune for towing. Do not use a performance tune. There is a good canned 87 towing tune or you can get a towing tune as one of your custom tunes. You get a lot more low end torque with the towing tunes.

 

More importantly, your EGTs are lower on a custom tow tune.