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Ranger6202 · 05-08-2013, 01:16 PM

question: i didn't think the harness would make much of a difference, as long as everything plugs in (DBY or Cable and etc...). I agree the O2's will change the tune a little. I'd recommend (rockauto.com) to get a cheap set of o2's for the 5.3.

05-08-2013, 01:16 PM	#107
Ranger6202 Registered User Join Date: Dec 2011 Location: Lyman Wyoming Posts: 109	Re: My swap. 5.3 into a 1990 3/4 ton 4x4 Suburban. question: i didn't think the harness would make much of a difference, as long as everything plugs in (DBY or Cable and etc...). I agree the O2's will change the tune a little. I'd recommend (rockauto.com) to get a cheap set of o2's for the 5.3.