lb7 performace options??

dirtymax02

New member
Apr 10, 2012
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So many performance options wich one should start with a bone stock lb7.....and a race valve for my rail is it something i should buy? Thanks in advance
 

duramax hd

Member
Feb 27, 2009
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CT
Im assuming your talking about the valve you put inline between the wastegate the turbo? No real serious gains from that. Save the $20. First and foremost, get gauges! Boost and EGT minimum. Then get an efi live tune/tunes from a reputable tune builder. My recommendation is Ridgerunner Diesel. Then get the trans built and get a lift pump on it and you have yourself 12 second truck!
 

Dirtymaxx03

Active member
Aug 4, 2009
3,109
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here is the common progression.
exhaust
tuning (efi live)
gauges (boost and pyro)
lift pump
built trans

after that things start to get really expensive
 

MACKIN

Smell My Finger...
Aug 14, 2006
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Connecticut
All depends what you want to do and ho much money you want to spend . You can add a small amount of performance or go all out.

With a LB7 assuming you have a 02 with your screen name you can go as simple as a canned down loader or a plug and play box. Everyone pushes EFI Live for good reason ,its loaded with options more than just tuning if you want to do your own tuning but it's more money also. Money you will need to do your transmission. Most sell it with a tune or two you can use safely I assume but again it depends on where you want to go and how deep are your pockets. If you plan on doing your transmission right away and want over a 100 additional HP then it may be the right choice.

As long as you keep it under 100 additional HP (at 90 and above you will do transmission damage eventually) like say a 50 HP tow tune and call it a day. No other mods are necessary. There is plenty of Edge boxes out there on the cheap ,good place to start, as people have upgraded to more power. It's a simple plug and play box.

Anything above that you will have to build the transmission. Like it or not thats what you will have to do to actually use the gains that you desire. That isn't a cheap upgrade even if you do it yourself or with help from someone. With help and a DIY your still looking at 3K plus for a kit and a TC.

Upgrading the exhaust can be done once you cross the 100 HP gain from a muffler delete to a free flow system. Also you could go with a upgraded air intake system for more air or just do the swiss cheese method on your stock air cleaner box. With that you will get more turbo whistle.

Bottom line it's your wallet that dictates at what level you will achieve. The Allison build up is the first big ticket item that has to be done like it or not. If you don't think so I'll sell you my Edge box on the cheap ,swiss cheese your intake set the Edge on the highest setting drive it like you stole it with a HUGE smile on your face until you limp your transmission THEN build your transmission and go for a ride!

You think you were blown away you aint seen nothing! This is of course if you've never ridden in a Juiced up Duramax. Might sound lame with all the performance modifications available today where these trucks have crossed the 1000 HP levels but being a newbie you'll be amazed!
 

JRODS*LB7

New member
Feb 1, 2012
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SE Massachusetts
like Mackin said and i agree with him totally eventually your goin to have to do a rebuild when it comes to 90hp + but a trans doesnt have to come first.:thumb:i did forget to mention guages those are deff important
 

Chevy1925

don't know sh!t about IFS
Staff member
Oct 21, 2009
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Phoenix Az
put a built trans in it, just get it out of the way and then add all the tunes, exhaust,intake, IAH delete, egr delete/up pipe (if cali emission), modded turbo horn, down pipe, and on and on and on and on and on. :D

but seriously, most dont ever plan to run big power but when you eventually limp that trans from a tune, its only a tune and lift pump away from making 500hp once you build the trans.