i don't know what to do.. need some help

[Teddy812]

2004 mustang gt 2v. manual trans.
predator U7146 , 9r07b

mods are bbk 75mm t/b,bbk pulley,bbk o/r x-pipe,magnaflow exhaust,17x10.5 rim with 285/40/17 tire.

i got a new tuner and installed 87octane. But I don't feel any difference.
I'm beginer with tuner.What should i have to modified parameters to get best performance?

Any help Very appreciate.

[mikel]

Start by running good fuel and the Diablo tune....you'll never see peak performance gains when running 87 octane in a performance car.

[concoursd]

how did you resolve the tuning issues from using o/r xpipe?

[Teddy812]

I didn't change any parameters even tire size. What do I have to tuning for x- pipe?

[concoursd]

The off road xpipe should have a tune in there that turns off your rear o2 sensors.

[Teddy812]

after update(9r07b) that function is gone.

[eightrac]

Sorry bro, you bought a useless tuner. Diablosport is proving to be more and more useless every day.

[mikel]

Sorry bro, you bought a useless tuner. Diablosport is proving to be more and more useless every day.

read/clear trouble codes/real time data monitoring/logging/multiple canned tunes/ability to hold custom tunes/end user adjustable parameters...yup. Useless!