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Predator Model#u7194

bruso

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bruso Enthusiast

bruso

Posted
Posted

Does anybody know if this is the right Diablo predator number for my 08Sierra Denali 6.2. Website shows the 6.2 but only under Denali not Sierra Denali?

 

bru

mdenali Enthusiast

mdenali

Posted
Posted
Does anybody know if this is the right Diablo predator number for my 08Sierra Denali 6.2. Website shows the 6.2 but only under Denali not Sierra Denali?

 

bru

 

 

That's the number they sold me, I bought it directly from them. I will say I am very disappointed. My truck seems to run smoother and the tranny much mopre predictable without it. Definitely makes a difference in the midrange, but low end was very erratic. Mileage was horrendous, about 11/14 and the truck also ran VERY rich. I now have my truck back with stock, ordered a new PCM from the dealer and will be shipping it to Wester's for a real tune.

sablowme Enthusiast

sablowme

Posted
Posted

...The diablo has to be dialed in, usually there set up on a stock vehicle so if you use the performance tune you will get better gas millage and better shifts. I know you got a Denali and luxury is part of that truck but also performance, Gm held back that truck alot, the diablo would help take out most of the TM. Dont give up on it yet. Honestly the westers is going to feel the same way a stronger shift is better for the transmission. which means better performance.

 

Just check out there on line forum they are a great help there.

txdutt Enthusiast

txdutt

Posted
Posted

less than 24 hours after receiving mine, I'm sending it back!! Tuner arrived DOA, wouldn't power up at all. After checking my truck's fuses, having to go to their website & look at the "real" users manual rather than that crappy generic booklet they sent & talking with their tech support--it's going back for a refund!!

mdenali Enthusiast

mdenali

Posted
Posted
...The diablo has to be dialed in, usually there set up on a stock vehicle so if you use the performance tune you will get better gas millage and better shifts. I know you got a Denali and luxury is part of that truck but also performance, Gm held back that truck alot, the diablo would help take out most of the TM. Dont give up on it yet. Honestly the westers is going to feel the same way a stronger shift is better for the transmission. which means better performance.

 

Just check out there on line forum they are a great help there.

 

 

The real reason I bought the Denali was for 403/417 and whatever else I can squeak out of it. I have been to the Diablo forum and apparently there are issues with the tranny programming and the 6.2/6spd. The other motors and the 5spd's appear to be OK, but the 6.2/2spd programs need some more refining. With the performance tune from the U7194 the truck is a dog off the line, it's actually quicker off the line with the stock tune. The shift points are erratic and inconsistent. Plus with the performance tune the truck runs very rich and it pings like a demon above 4500 rpm.

bruso Enthusiast

bruso

Posted
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Posted

thanks for the imput guys. Miami D...keep us D owners up on how and what you do as far as tuning goes

 

bruno

mdenali Enthusiast

mdenali

Posted
Posted
thanks for the imput guys. Miami D...keep us D owners up on how and what you do as far as tuning goes

 

bruno

 

 

I am just taking the route traveled by many before me... Lots of great info here...

txdutt Enthusiast

txdutt

Posted
Posted

hmm, looks like I actually got lucky with the tuner being dead when I got it. Sounds like they're software is as bad as their hardware quality control is....d**n shame, reason I wanted it was all of the adjustability features it has, oh well...

mdenali Enthusiast

mdenali

Posted
Posted
hmm, looks like I actually got lucky with the tuner being dead when I got it. Sounds like they're software is as bad as their hardware quality control is....d**n shame, reason I wanted it was all of the adjustability features it has, oh well...

 

 

I can and only will speak about my specific configuration (6.2l/6spd) as aparently this is the one or the newest and least tested tunes. I'm sure they will get the kinks worked out, but i am not that patient, so on to Wester's I go.

Wires Enthusiast

Wires

Posted
Posted
hmm, looks like I actually got lucky with the tuner being dead when I got it. Sounds like they're software is as bad as their hardware quality control is....d**n shame, reason I wanted it was all of the adjustability features it has, oh well...

 

 

I can and only will speak about my specific configuration (6.2l/6spd) as aparently this is the one or the newest and least tested tunes. I'm sure they will get the kinks worked out, but i am not that patient, so on to Wester's I go.

 

 

I'm with you on this one. I bought the same truck, and the dealer delivered it with the Predator installed. My fuel economy isn't that great (I get 16MPG city (happy with that)/16MPG highway (not so happy with that)), and the exhaust tips are BLACK with soot. I did notice that the tranny shifting seemed "off" (like it was hunting). I'm putting it back to stock today to see. I just emailed Westers (they're 1.5 hours from me), so I think this week she'll get the Westers tune.

 

I think the problem is the tune was "tweaked" from the 6.0 to handle the extra displacement in the 6.2, but isn't optimized (my hunch).

nbscanuck Enthusiast

nbscanuck

Posted
Posted

I love my Diablo. The canned tunes that are in the machine are OK. But you fine tune them you WILL see better mileage and better performance. Diablo is the only hand held that will allow you to make changes to the machine yourself. These mail order tunes are probably more agressive than the hand helds but YOU can't make changes yourself. Mail orders are nothing more than a more agressive canned tune. EVERY motor runs different and should be tuned different.

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