diablosport themselves does not do custom tuning for end users... you need to get a custom tune from a diablosport CMR custom tuner, like myself... which is what you've heard/read the good things about
it's $135 for a custom tune....
With the custom tune, you'll gain even better/quicker throttle response & acceleration, stronger/harder pull, smoother & quicker power delivery throughout the rpms, etc...
as far as gains go... absolute hp/tq gains are hard to predict... every vehicle is different... even if they're the same and have similar mods... location/weather, fuel used, elevation/altitude, etc etc all play a role... the same holds true for mileage gains - those variables, plus driving habits/style, how much highway vs city driving, etc all make a difference.... you could gain no mpg increase, or you could gain up to about 2 mpg increase... tough to say due to all of the variables in play - which is why there is no guarantee of any specific amount of hp/tq or mileage gains.
with the custom tune, I CAN tell you that you will definitely have a very noticable performance difference/gain over and above the canned preset diablo tunes...
I have gained people anywhere from 12-39hp, and 10-23lb. ft. torque...and 0 to 2 mpg - above and beyond what the preset canned tunes give you... again, obviously mods, fuel used, driving style/habits, etc all played a role in who gained what...
What I'd need from you is a copy of your "original backup" stock tune file, a copy of the "last tune written" tune file, and the paypal (there are
"Buy Now" paypal buttons on my site), and that's it... then we're good to go. and I can usually have the initial custom tune done and sent back to
you within 24 - 48 hours from the time that I receive everything.
Here's info about my custom tuning:
http://www.diablewtune.com/
there are links on there to all the info and programs you'll need - i.e. what tune files I need, how to export/import tune files, my paypal info,
etc etc... as well as a link to just a small sample of just some of the "Testimonials" I've received from people I've done my tunes for - makes for good
reading, hehe.
once I get the initial custom tune done and sent back to you and you install it, then you'll need to put on about 100 miles over a few days of normal driving, and then I'll have you do a data log for me so I can check the fueling/timing and do some fine-tuning adjustments...
Thanks for asking man, I appreciate it!!
and you can email me directly at diablo.help AT gmail.com...