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zombiescustoms · 03-26-2008, 04:04 AM

89 454 TBI Burban, just did a 300 mile trip and got a solid 10 MPG thinking of putting a TB spacer, injector spacer and an adjustable fuel pressure reg on , supposed to help mileage.

03-26-2008, 04:04 AM	#16
zombiescustoms Registered User Join Date: Mar 2008 Location: Abingdon, MD Posts: 74	Re: Fuel efficiency...what MPG do you get? 89 454 TBI Burban, just did a 300 mile trip and got a solid 10 MPG thinking of putting a TB spacer, injector spacer and an adjustable fuel pressure reg on , supposed to help mileage.