Thread: ls3 GMPP Crate motor first start
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Old 12-30-2020, 05:57 AM
dhutton dhutton is offline
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Originally Posted by XLexusTech View Post
of note.. o2's are in headers.. headers are on..
O2 sensors will not read correctly with open headers. They will read lean which will make the car run pig rich....

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XLexusTech (12-30-2020)