Quote:
Originally Posted by gringo
Why is this so funny?
With direct injection, fuel doesn't get a chance to clean the back of the intake valves like it does in port injection. Over time, the back of the intake valves build up carbon deposits that can impede air flow into the cylinder making combustion less efficient.
Since the OP has the LFX which has direct injection, I think it would be a good idea to invest in a catch can.
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OP's car is 2011; LFX came out in 2012--but they are both direct injection. 2011 LLT doesn't have the integrated exhaust manifold, therefore has capability to have headers installed--good for OP!
OP--Please read threads pertaining to LLT and tendency to have unexplained oil loss; check oil level at least every time you gas up. Low oil level can/will lead to timing chain issues and resulting engine failure.