moreeee questions
 

Must be gettin sick of this but do i have to purchase a custom tune on my diablosport to get the extra HP out of my CAI?!? Or can i just use the 93 octane already preloaded and get the same effect?

You don't need 93 octane. Get custom tunes for 87 octane.

More than likely you'll get a check engine light (most likely saying you're running lean) if you don't get a tune for the CAI. You can use whatever fuel you would like to. Hope that helps.

It depends on what tune is on that tuner.

Lets say i load 93 octane performance tune on my car, and i can only put 91 octane in my car...will that my hurt my car??

No.. do you already have this tuner? If not buy an SCT from VMPtuning have it set up for 91 octane and call it good.

Or spend the $600 on a decent CAI and tune setup from VMP and call it good.

Either way..SCT and VMPtuning... 3 custom tunes for $400 .. IMO the only good thing with diablo is the data logging...which you most likely won't ever need.

thats a horrible suggestion. If your going to spend all the money on tunes at least use the octane that your going to get the most out of

91 or 93 isn't going to do much for the car. It isn't running any sort of power adder that would need it and on a stock car it won't do much. 87 would work..but if you're going to already be spending the money ..may as well just plop 91 in..