I have a 03 2500HD Duramax 4x4 and im fairly new to diesels, I was wondering what should I do for some upgrades (performance chips, exaust, intake and such) but I don't want to have to upgrade my transmission. Excuse me for my ignorance cause im a newbie. Thanks!!! -

If you do not upgrade the tranny I would be careful, but to start with you can mod the intake already have buy cutting out the triangle shaped section on the front of it...

You can also take the boost tubes off of it and spray them with Duplicolor spray on bedliner material to lower the intake temps.

Straight pipe the exhaust.

Put a smaller tuner like a Banks Ottomind for towing performance without hurting the tranny.


BTW, WELCOME to the site, there is a LOT of useful information here and some good people too!!!! -

bigdaddydiesel's Sig:

'03 GMC 2500HD ext Cab Short Bed LB7, K&N CAI w/AFE Fltr, Banks 6-gun w/ PDA , FASS Pump, 6-Spd Man Tranny w/ Custom Dual Disk Clutch By: South Bend:, Pyro and Boost Gauges in the A-Pillar.
'02 GMC 3500 Dually 4X4 ext cab Long Bed Dually LB7 D-Max, No Mods yet...

http://www.dieselbombers.com/registe...eferrerid=4656

Thanks, oh and P.S. i wouldn't mind some black smoke!! -

get some good exhaust and do the airbox mod. For a tuner I love my EFIlive and would suggest it to anyone. Any good vendor could set you up with a good tranny safe tune, plus if you ever feel the need for more power the possibilities are endless. We all know how addicting power is The scan tool with is is a great thing to have in case of problems, or improve you can use it to improve your tuning. -

uwyo_dmax's Sig:

2003 Chevy LB7/Ally LT3 CC/SB
EFIlive/DSP5
5" Straight Exhaust
6" RCD Lift 35" BFG's
Bose Stereo/DVD Kicker 12"

Airbox mod, exhaust and then a Predator. That will be just fine until you want more. -

No Problem's Sig:

07.5 Chevy CC Dmax-6-8"CST set at 8" -35x12.5x20 Toyo MT's-Jesse James Lawless 8's 20"-PPE-Banks 5" tip-AFE Stage 2 Intake-5 Trumpet Train Horns-Truxedo Lopro bed cover-Custom made bedrails, painted to match OEM color-AMP Research Steps-

that is the only problem with EFIlive is its to easy to add power and fry a trans -

jdugie123's Sig:

04.5 D/A MBRP 4" cool duals with muffler delete, volant air intake, EFI Live, Edelbrock 1792 fuel pump, suncoast level IV, ATS copilot, nicktane fuel filter, 6" RCD, 37" BFG KM2s, 4.56 gears, bushwacker cutout fenders

Well...you can start by getting rid of that LB7 and buying an LLY. BBWWWAAAAHAHAHAHAHA J/K -

DangerousDuramax's Sig:

'05 2500HD CC/SB, LT, 2WD, Black
Click Here For My Garage

When I grow up I want to be just like Dr Evil!!! If I don't grow up I want to be just like Whitmore!!!

Lt. US Navy EOD 88-98 (Desert Storm)
Do everything on purpose for a purpose lest it be a thorn in someone's side and waste of everyone's time.
They can take your life, freedom, and possessions but they cant take your knowledge or your God.

definitely true i just would rather spend that much money once instead up upgrading later on if turns out you want more IMHO. -