Do headers tend to make your a/f richer or leaner? Since the cam swap and retune im a 10.0 wot, i dont know if im shooting to much meth or what? What will i see after header install, before i get another retune?
Do headers tend to make your a/f richer or leaner? Since the cam swap and retune im a 10.0 wot, i dont know if im shooting to much meth or what? What will i see after header install, before i get another retune?
RCSB 04 Silverado 5.3 Nelson Tune, Maggie 3.2 pulley, Meth, GT2-3, 918 springs, Dynatech LT's,
Gibson Exhaust, Transgo shift Kit, Vette servo, 4.10 auburn LSD, Joe Gibbs wheels
I think youll be a tad lean.
you should go leaner when u put the headers on .so wait ,to make any adjustments if youre at 10.0 youlle probly go up to 11or more.mine did
mods:2004 sierra ext sb,20s ,big brake kit w,hawk pads,air bagged,2006 6.0 lq4 swap,vortec supercharged10psi, air to water intercooled w/ dual electric fans on it ,snow meth injection kit,60lbers, e-fans ,big radiator swap ,cam 218 /222 548/550 comp .hardened prs .1.85 comp roller rockers ,guideplates ,crane double springs,trans 4l65e built .pacesetter l/ts true duals w/x pipe and magnaflows,14 bolt rearend swap ,3.73s,aroemotive fuel pump system w/elec.fuel controller and bypass regulator a/n fittings, taylor 10.5s interceptor gauge,aem w/b a/f ,autometer boost/vac NELSON 93 OCTANE TUNED .
you may have some bad 02 sensors or you need the after cat sensors moved up to the front. I use the rear O2 sensors from a Corvette in mind.
See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709
Could I use o2s out of a Vett in mine? 2000 gmc 5.3
check the shape of the connectors. They may not be the same. You can repin the Vette wiring into your connector if they're both the same type/sex of connector.
See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709
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