2010 with CEL codes

Maddmexy

Greenie N00B Member
Hello, I am new to this group. I just bought a 2010 and it has a modified exhaust and cold air intake. I do not have any info on what else it may have other than what I can visibly see. The car does have the following codes:
P0171
Sy a tem too lean
P0037
Ho2s heater control circuit low
P0069
Map-barometric pressure correlation
P0137
O2 circuit low voltage
P0101
Mass or volume air flow circuit range/performance

It was suggested to get a tune. Is there something I shouldook into first?
 
How much of the exhaust is modified? Cat back test pipe downpipe? Which cai and is it actually a cai or is it a sri
 
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