Can someone tell me the benefits of upgrading my Predator?

[Randy_the_Hack]

Hi all,

I bought a Predator version 2.0 from a guy out on eBay right after I bought my truck. It really breathed a lot of power and fuel economy into my truck. Right now, I'm getting between 21 and 22 mpg in my '04.5 LLY Chevy Silverado 2500 Duramax.

I'm considering upgrading, which is gonna cost me since I don't have a valid receipt. What benefits am I going to see? I understand from someone that the boost is a bit better... but I'm wondering if I will pick up any Scan Gauge like functionality or anything else like that?

Can someone please tell me what comes in the upgrade? Also... when I send it in for the upgrade, do I have to return my truck to stock tune before I send it in?

Finally, now that I have a 4" exhaust system (turbo-back), which tune is going to give me the best mileage? Is the +65 the only logical tune to use for the best mileage?

[johan]

The update included these fixes:
Addition of support for 06 Hummer H1, improved tunes to address "defuel" between shifts and a reduction of EGT by allowing more boost

65hp tune is usually the best one for mpg, all depending on your foot.

[Randy_the_Hack]

The update included these fixes:
Addition of support for 06 Hummer H1, improved tunes to address "defuel" between shifts and a reduction of EGT by allowing more boost

65hp tune is usually the best one for mpg, all depending on your foot.

OK... that helps. Any chance you can comment on the other questions? Also, I've been told that the v2.02 upgrade - specifically the boost - disappears as altitude increases. Is there anything to that?

[Randy_the_Hack]

Bump

[johan]

The boost control has different tables it uses based on altitude and higher altitude will have less boost.