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Old 12-18-2012, 09:23 AM   #13

KMPrenger's Avatar
Drives: '10 ABM LT/RS, 06 Chevy Colorado
Join Date: May 2009
Location: Jefferson City, Missouri
Posts: 10,625
Originally Posted by Texas_RS View Post
So the bbk long tubes doesn't give you check engine lights and no tune is required? If so, I'm sold!
LTs will almost certainly throw a CEL over time, and a tune is needed to correct that.

That said, we have had guys run LTs without a tune for quite awhile with the CEL on without issue. Car still runs great, its just that the rear 02 sensors are sniffing more emissions, but I don't think the rear 02s will make any adjustments to the A/F ratio. I think that is done via the front 02 sensors.

But a tune is still a good idea of course.
CAR IS SOLD! Waiting on 6th gen IPF Tune, Custom Magnaflow Exhaust, Vararam intake, MACE Ported Manifold, RX Ported TB, "Black Ice" manifold insulator, Elite Catch Can, ZL1 repro wheels, ZL1 Springs, DRL Harness, Front GM GFX, Heritage grill, Street Scene lower grill, NLP Spoiler, ZL1 rockers and much more!
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