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Originally Posted by White2004
I just bought the Diablo Predator. Will I need to buy additional hardware/cables to get the emailed tunes? Also since I'll be running 93 octane how much can I advance the timing? What other parameters such as fuel should I change? Does anyone have any real numbers on this thing. My car is a 04 GT with 5spd. No other present mods all stock. I saw something called a Diablo Sport Predator Pc interface and power source on ebay. Will I need this?
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A. I think you need a cable to get tunes emailed.
B. When you order your Diablo, specify to the dealer that you have 93 octane available to you and request that they advance the timing as such. Some of the mail order tunes are conservative and they assume only 91 octane. You want your timing advance to be about 14 degrees with 93 octane.
C. The Diablo allows the user to advance the timing even further, or retard the settings a bit from the diablo settings. Keep in mind that these adjustments are very minor. Diablo "over-states" how much you can really adjust the thing. Diablo knows that these devices are in the hands of novices and as such their Risk Management Department smartly ensured that end users can't get crazy with these things.
If your tuner arrives with timing advanced to 14 for example, you can only advace it or retard 10% of the amount of advance over the stock factory setting of the car. This means that you will be able to retard to to only 13.6 advance or to 14.4 degrees. This is how Diablo originally set these up...perhaps they have made changes that I am not aware of.
D. Regarding hp gains. I don't care if you use a Diablo, SCT, hypertech....they all get hp improvements the same way....advancing timing and leaning out the a/f PERIOD! There is no great secret here. Your actual results will depend on how good your current tune is and other mods that you have. If you are lucky, you might get as much as 15, but I would bank on 8 - 12.
What you are paying for between differnt devices are things like support, ease of use, knowledge/experience, or even gimmicks. What this translates to is that you might see improvements in the drivability of the car or an improvement in the idle...these fixes won't net hp improvements, but they do make owning the car more enjoyable.