I have two questions about the xcal2, my first one is about the 87 performance tune - Why do i not feel much difference than the stock tune? Is it possibly because I didn't purchase an intake with it? I have at 07 with a manual - I heard you don't feel the drive-by-wire difference so much in a stick. My second question is do you think i will feel a larger difference when i use the 93 performance tune?
You have a manual, therefore, the throttle lag with the DBW is less noticeable. With no other modification to the AF (e.g. CAI, increase octane fuel, etc.) there will be limited notice in the 87 octane tune.
Sad, but a fundamental aspect none-the-less. Headers, Wooooo okay, look at some of the reductions in prices you can get now. JBA's at 1/2 cost.