
What is the best way to tune an LB7?
Custom tuning like EFI Live offers the best performance and totally customizable settings to accommodate all kinds of different performance mods. If you are only going to lightly modify your LB7, you can also use custom tuning from Efi Live.
Is custom tuning your LB7 Duramax worth it?
Custom tuning also often offers different power levels too. If you want your LB7 Duramax to continue to be reliable, you may want to consider keeping your tuner at lower tune settings. If you keep it at higher settings, you could experience common LB7 problems like a blown head gasket, or you may even limp mode your Allison 1000 transmission.
Is the banks power 66411 the right tune for your LB7?
For LB7 owners who use their truck for work and play, then the Banks Power 66411 is the best investment you can make. Since most engines are designed with one tune, you can switch tunes with the programmer – depending on what you are doing that day.
How good is the Allison Transmission on the LB7?
The Allison 1000 transmission found on the LB7 is fantastic, especially when compared to rival automatic transmissions during the same time period. It isn’t perfect though. On modified trucks, the Allison can fail fairly quickly. If your truck is going to be left stock, the factory Allison transmission will last you a long time.

How much horsepower can a stock LB7 handle?
550 to 600 hpCouple that with a weaker connecting rod and you can draw a pretty strong conclusion as to why the LB7 rods fail in the 550 to 600 hp (1,100 to 1,200 lb-ft.) range. While we tend to talk in terms of horsepower, it's the torque of these engines that does all the damage.
How much horsepower does a 2002 LB7 Duramax have?
The LB7 Duramax diesel is a direct-injected, turbocharged, intercooled, four-valve-per-cylinder V-8 that produces 300 hp and 560 lb-ft of torque.
How can I get more horsepower out of my LB7?
If you want to improve performance, an aftermarket cold air intake can provide pretty solid gains for a cheap price. Aftermarket cold air intakes like the LB7 Duramax Banks Power Ram Air System provide the engine with cooler, denser air which results in more power.
How do I turn on high idle LB7?
5:316:39How-to install a high idle kit in a GM Duramax diesel truck - YouTubeYouTubeStart of suggested clipEnd of suggested clipWhen pushing the set button the idle should raise to above 1200 rpm by pushing the resume button onMoreWhen pushing the set button the idle should raise to above 1200 rpm by pushing the resume button on the cruise. To disable it simply push the button again or tap the brake switch.
Are LB7 fast?
Motor work it is a very fast truck the lb7 is the fastest motor of all the duramax motors.
Is a 2002 Duramax a good motor?
Outside of a number of common problems which are mostly resolved today, the LB7 Duramax is a stout engine with good reliability and performance for its age. While the engine isn't necessarily built to be tuned to produce massive amounts of power, it does a great job of being a solid stock work truck.
How much boost can a LB7 handle?
yes. 32 psi is the max on an LB7 turbo.
How can I make my LB7 Turbo louder?
1:466:23MORE TURBO WHISTLE on a Duramax (Easy Mods) - YouTubeYouTubeStart of suggested clipEnd of suggested clipOn it and. If you remove that there's gonna be a little hole on the intake here that it opens up andMoreOn it and. If you remove that there's gonna be a little hole on the intake here that it opens up and basically you just buy a blocker plate that blocks that off.
How can I make my LB7 injectors last longer?
3:016:24Extend Life of LB7 Injectors (01-04 Duramax) - YouTubeYouTubeStart of suggested clipEnd of suggested clipFresh. So some good fresh fuel. And keeping water out of your fuel is a good way to do. It. AnotherMoreFresh. So some good fresh fuel. And keeping water out of your fuel is a good way to do. It. Another very important thing is to change out your fuel. Filter. Change those things out to the book guys.
How do I high idle my 2002 Duramax?
Start the truck and turn the cruise control to standby, the idle should bump up to around 850rpm. Push the set button at the end of the turn signal switch and the idle should jump to around 1250rpm. Slide the cruise switch to resume and the idle should go to about 1700rpm.
What does a high idle switch do?
The High Idle switch eliminates the use of another person stepping on the accelerator such as in the case of trying to jump start another vehicle. On those hot or cold days you can set the idle up to create a comfortable air temperature for the interior. Turning the High Idle switch off is just one click away.
What is high idle for diesel?
Cummins says to use high idle anytime you idle over 5 min. Plus let the engine start, build full oil pressure then go to high idle to build air.