what can you tell me about them? would it be worth the money? anyone running this stack?

 

for what year of truck?theres some issues on the 06-07s.the 03-05s work fine,i have one and it works well,great power and good milage.for the money on the 03-05s they are a good buy,but if you have the money do the smarty thing and you will be happy also

 

it would be for an 06....a buddy of mine has been planning on getting a smarty, but he has an offer to to sum trading and get the diablo stack...so he is trying to decide if its worth it, or just spend the money for the smarty and be done...

 

I had the puck/predator stack on my 07 and did not think it ran that well for how much power it was said to be putting down and now have a Smarty and i am loving it! Hope this might help

 

Like the earlier post said, I think the diablo works well on the 555s. If you follow their forums, the 06 and up crowd want to rip their heads off.

I have an 03. I ran the predator/puck combo for about a year. The combo makes my truck run super strong with manageable egts.

With all of the hype, I sold the pair on ebay and bought a smarty. The smarty was nice, but I swear that the diablo runs stronger and better on my 03. Now, with that said, I'm sure bob and marco could send me a tune that would eat the diablo for lunch, but I am not a twin-turbo, big injector, 11 second q/m guy.

With that said, I thought the diablo was a better buy at $310. I purchased another after returning the smarty. I am not running the puck anymore, as I don't think the extra pressure is worth the 10-20 horsepower that they claim. I also was not impressed with their "stack" tunes.

 

well that pretty much tells me what i was needing to know..thanks for the help.

 

ya if its for an 06 and he has waranty do it once and get a smarty,unless hes getting the stuff real cheap and he has time to check if its updated to the latest software which suposedly doesnt affect the keycounts thing for waranty

 

This is exactly how I felt when I had my predator/puck stack and then compare it to the smarty I now have. I went ahead and got the smarty as I am loooking to buy an '06 or '07 and will be able to use is on that truck as well as the one I have now. But for my '03 the stack was well worth the money if you ask me.

 

If you go diablo, just hope that nothing happens as their customer support sucks big time..

 

The U7131 for the 06's has a new program that works pretty good, it has an adjustable top speed limiter and is "Claimed" to not erase the key counter.
Customer service is pretty mediocre but I like the way the Predator performs.
I had a Smarty for this truck first and couldn't live with the smoke and the way the transmission shifted, I switched to the predator and was much happier. It's my understanding that the latest round of Smarty updates are vastly improved over what I started with, kinda' wish I kept the Smarty to do a head to head comparison...oh well.....