Duramax Lifetime Supporter
Join Date: Jul 2010
you dont need to put in bigger injectors. stock injectors can make 500-550hp with good tuning. With the lb7 the injectors have been know to be a very common failure. but you will blow through a tranny towing that much weight with 50-90 horsepower over stock.
07.5 GMC LMM CCSB 6"lift, efi live spade from duramaxtuner, cobalt gauges, dpf delete and straightpiped, airbox modded, pcv reroute, egr blocked, fprv shim kit, bags and compressor, custom traction bars.
SOLD-lb7 ECSB lifted w/efi live