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Old 12-18-2012, 09:23 AM   #13
KMPrenger


 
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Drives: '10 ABM LT/RS, 06 Chevy Colorado
Join Date: May 2009
Location: Jefferson City, Missouri
Posts: 9,316
Quote:
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.
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