2004 colorado with 2007 GMC savana van 4.8L motor.
-28lb / hr injectors
-06 GTO intake fuel rails
-06 SSR throttle body Mass air flow sensor gas pedal, E40 computer
-LS2 knock sensors
-injector top at spacers with 1/4 washers
-Luk clutch
-OBX 1 3/4" stainless steel long tube headers, and high flow cats for 06 trailblazer SS
-front o2s heater wired to be constantly on heater codes turned off.
I was comparing my camp specs stock LR4 Gm # 1256097 191/190 .457/.466 114
to the 06 SSR, which is the tune I am using GM# 12574519 204/211 0.520/0.520 116
I have changed the cylinder displacement to what it should be for a 4.8L, I changed the injector settings from 42 lb / hr to 28 lb / hr, thats what I am running.
Is there any tuning required for the different cam etc..
it passes emissions, but it really smells bad on idle, seems to rich, how does this log look? Can high flow cats smell richer than OEM ones? It smells like a old 80s vehicle.
I attached my config file and log, as well as the tune file.
Looks like I am getting knock even though I am running 91 octane gas. Is this from the cam specs? How do I adjust the tune for the different cam?