tonkpils555666sas

I have the SCT Xcalibrator ECU tuner. I was wondering if changing the fuel grade would help performance of the car. Right now the dealership tuned the car for me and set the fuel grade at 87 oct. I see a lot of Mustangs with 93 oct. Which is better?

jmk3

Absolutely better, it will increase your timeing & make it pull much harder. Get a good tune from Evolution or Brenspeed.

22kart22

I agree. It should give you some more gusto, and better reliability at high temps, if you like to punch it like the rest of us

howarmat

+1 cant go wrong using higher grade gas for performance and getting a CAI and Tune from Brenspeed, B amachips or Evo will transform you car into another beast altogether!

Black Sunshine 07

my diablo predator came with 87-93 performance octane tunes. do those of you who uses company's tunes such as brenspeed think that the tune they can sell is better than the one that comes from diablo? [sm=WTFsgign.gif]

howarmat

It is far superior than the canned tunes!

Black Sunshine 07

i talked to the nearest diablo dealer and dyno shop to me and was asking them about a dyno tune. they told me over the phone that the jlt cai tune that came on my predator was really good and it would be hard to have a better tune written than the one that came on my predator. but after anymore mods i would need to do a dyno tune

howarmat

i call BS on the tuner then.....Call up Brenspeed or B ama and see what they say about canned tunes. I had my diablo with the canned tune for the c&l. THere was a night and day difference bewtween the canned and custom that B ama did for me.

tonkpils555666sas

wait, so i would need to order a totally new ecu chip that has a tune on it? or can i use the xcalibrator tune for 93 oct? or is more a question of which is better performance wise?

Black Sunshine 07

wow really howarmatt?? that's crazy, i definately need to check into that then. i called the nearest diablo dealer i could find online and they told me that they couldn't really write anything better than the JLT tune that came preloaded on my diablo predator. they said that it was really good. does bama and brenspeed deal with diablo predators?