This exhaust matches the open loop only catless L31. My 2003 L31/5spd 4x4 GMT800 Sonora had the same type of setup but did use front 02s only. Factory EGR deleted, LS truck airbox and 85mm MAF on that one.
This exhaust matches the open loop only catless L31. My 2003 L31/5spd 4x4 GMT800 Sonora had the same type of setup but did use front 02s only. Factory EGR deleted, LS truck airbox and 85mm MAF on that one.
Last edited by Fast355; 03-03-2024 at 07:25 AM.
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