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Discussion Starter · #1 ·
:help Hello everyone. I am fairly new to the Diesel world. I just sold my 1997 F350 PS crewcab LB and bought me a 2002 Duramax Auto. The truck seems to have a ton of power and i was wondering if anyone would have an idea on what kind of HP it has. Which am sure it will be hard to guess since i don't know much about the truck. Heres what i do "think" i know.

The truck has 120k. It has a Fabtech Lift with 37's under it with huge upgraded CV axles and tie rods. Besides all the cosmetics i don't think its stock. Ive droven my buddies d-max and it feels weigh stronger than theres(they had hypertech programmers). From dead stop it will smoke the tires in 1st, 2nd, and bark 3rd pretty good. (assuming i keep it straight:gearjamin lol) If am rolling anywhere under 35/40 and punch it, it will break traction and go side ways a lil. It almost feels as though there is a shift kit in it. I can brake traction with 37's at will.!:rockin

It has the pod gauges (boost, pyro, and engine oil temp). I tried to research the stock boost on a 02 d-max and from what i can tell the average is somewhere in between 20-25(pls correct me if am wrong). I can hit 25/27 at around half throttle. My guage goes up to 30psi. Unfortunatly, when i punch it, it goes pass the 30 to the letter "T" to the end of the word boost. Which am assuming if there 'where' numbers there it would be pretty close to 35, but not exact.



Am not sure if the inter cooler has been upgraded, but both pipes (left and right side of it) coming off the turbo are blue and look newish.

From just looking at the engine i also see a Banks Big Head waste gate. It is also has a 5" straight pipe(no cat or muff) with a 7inch tip. It has a Volant air intake. theres no black smoke until about 25 psi and above. I didn't see any perf. chip, but maybe possiably a programmer?

Another thing that puzzels me is am wondering if it is possiably geared? At 80pmh(its 3-4 miles off really doing 76-77mph) the RPM it bearly hitting 2100. At 60mph it is around 1600/1700 rpm. Same as my buddys stock d-max. So could it be geared? At 80 mph i can punch it and it will sit me back and be past the 100 mark in no time flat!
There is also a box under my driver side dash and it looks new. Anyone know what this is? Its has like 6 lil color squares. On the bottome of the squaresit says purple(far left), blue(center), and brown(far right). havent a clue to what it is. there are also numbers un the upper half.


Overview:
Do you think its geared?
Do you think the previous owner had a programmer on it and left it at a hotter tune setting?
Is there a way i can find out?
How much Hp you think it has?
Will the Banks wastegate increase the boost that much 20/25psi to 30/35psi?
what's the box under the dash?
Is it all in my head?:confused:
:help
Sorry for the long post. I don't know if i was allowed to include pics, so sorry if i wasnt suppose to. I know this is a lot am asking, but any help is truly apperciated...! thanks!
 

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Nice truck...if your breaking those tires loose, there is a programmer....
 

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Welcome to the DF!
 

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Welcome to the DF
 

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Discussion Starter · #8 ·
:)

Thanks everyone. Glad to be hear. Heard y'all where a good group of folks.
So anyone got any answers for my questions? :confused:
 

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Discussion Starter · #9 ·
Hello.....?????
 

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you are asking to many questions at once just ask the most important one and you might get an answer
 

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how many psi is it running? nevermind just read the whole post and saw that...The blue tubes your talking about in the picture of the motor are stock...mine looked new for the longest time... well till I sunk her in the mud. The little box under the dash look to be some kinda air to fuel controler. It looks similar to the one that was on my 300zx but I am probably wrong just taking a guess on that
 

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Discussion Starter · #12 ·
thanks...

Thanks....
 

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Discussion Starter · #13 ·
yay.!.!.!

Good news and bad news today... I got lucky...! I took my truck in for a smog and my truck is considered federal so they didn't have to plug it in and I got to keep my programmer (not that I knowwhat it is). He did the snap (smoke) test outside so that helped. So I passed..! Bad news...
I've had the truck for a week and I have never punched it, in fear of breaking something. Today I finally decided to go for it and give the truck a lil more pedal the truck flew like a bat out of hell... but than around 70 I stomped it (sitting me back in my seat) and when it hit 80/90 I heard this loud thunk and the truck down shifted and wouldn't go back up.
I had to pull over and kill the truck. It went back in to the last gear but than as I started to reach 80 it down shifted again. I pulled over and let it sit. Started it and babied it home. Now its working like normal again. 80 down the freeway and no problem... someone told me too check the color of my converter to see if any upgrades where than and it is purple, so am prusuming its an ATS converter.

Does anyone have any clue what happend? And why it locked in a lower gear?
 

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Discussion Starter · #15 ·
Thanks...!
 

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Discussion Starter · #17 ·
Well that's no good... how do I find that out?
 

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your truck is going into limp mode the allison transmissions dont push enough pressure to tha clutch packs in overdrive so it slams it down a gear and goes into limp mode and powersdown shift kits do help but one of the biggest things besides a whole new built tranny is an ats co pilot you can control the whole transmission with this your torque converter lock up etc ATS Diesel Performance Co-Pilot - GM Duramax - TruckCustomizers.com theres a look at it it does seem like u have a ats torque converter buts thats not a garuntee i doubt tha tranny is built bein that its goin into limp mode my opinion would be to get your ecm flashed and get a efi live tune installed and have tha tranny tuned to handle tha tune bein put in its fairly cheap and effective next would be tha co pilot if further problems
 

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Discussion Starter · #19 ·
Thanks a lot...!
 

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Moved to introductions section.:drink

Welcome to the DF!:drink
 
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