MPG increase with Gibson
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Member
Joined: Aug 1999
Posts: 39
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From: Richmond, VA, USA
MPG increase with Gibson
Well guys and gals, I just burned my first tank of fuel with my new Gibson Swept Side installed. I drive mostly "around town".
With the stock exhaust system my truck averaged about 12.5 MPG. With the new Gibson system installed, I just clocked in at 14.8 MPG. That's a 2.3 MPG increase!
The real kicker is that since I've had the Gibson, I've been a little harder on the throttle "playing around" with my new added performance. I am going to watch my MPG like a hawk and I'll report back if things change.
Also, I just installed a shiny new Airaid FIPK last night. This might affect my mileage as well. Overall impressions of the Airaid are good. Definitely a good "seat of the pants" enhancement. One word of caution regarding the Airaid: the instructions clearly state "for offroad use only!". The Airaid is not street-legal in all states since it does not fully comply with federal emission standards. I did not know that when I purchsed mine.
My truck is a '98 5.4L XLT 4x4 SWB Supercab.
--Steve
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1998 F-150 Super Cab XLT, 4x4, SWB, StyleSide, 5.4L, E40D Automatic, Dark Toreador Red, Med Graphite Cloth Captain's Chairs, P255/70R-16 OWL AT Tires, 3.55 LS Axle, Cab Steps, Tow Pkg, Power Color-Keyed Mirrors, Fog Lights, Cast Aluminum Wheels, 6-Disc CD Changer. Aftermarket: Pendaliner SR, Keyless Entry, Delta Deep Aluminum Toolbox, Gibson Swept Side Stainless Steel Exhaust, Airaid FIPK, Banks E40D TransCommand, Custom CB and Amateur Radio Installation. See me and my truck at http://bluecrab.richmond.edu/crab-1.htm
With the stock exhaust system my truck averaged about 12.5 MPG. With the new Gibson system installed, I just clocked in at 14.8 MPG. That's a 2.3 MPG increase!
The real kicker is that since I've had the Gibson, I've been a little harder on the throttle "playing around" with my new added performance. I am going to watch my MPG like a hawk and I'll report back if things change.
Also, I just installed a shiny new Airaid FIPK last night. This might affect my mileage as well. Overall impressions of the Airaid are good. Definitely a good "seat of the pants" enhancement. One word of caution regarding the Airaid: the instructions clearly state "for offroad use only!". The Airaid is not street-legal in all states since it does not fully comply with federal emission standards. I did not know that when I purchsed mine.
My truck is a '98 5.4L XLT 4x4 SWB Supercab.
--Steve
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1998 F-150 Super Cab XLT, 4x4, SWB, StyleSide, 5.4L, E40D Automatic, Dark Toreador Red, Med Graphite Cloth Captain's Chairs, P255/70R-16 OWL AT Tires, 3.55 LS Axle, Cab Steps, Tow Pkg, Power Color-Keyed Mirrors, Fog Lights, Cast Aluminum Wheels, 6-Disc CD Changer. Aftermarket: Pendaliner SR, Keyless Entry, Delta Deep Aluminum Toolbox, Gibson Swept Side Stainless Steel Exhaust, Airaid FIPK, Banks E40D TransCommand, Custom CB and Amateur Radio Installation. See me and my truck at http://bluecrab.richmond.edu/crab-1.htm
Senior Member
Joined: Mar 1999
Posts: 240
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From: HOUSTON,TEXAS,HARRIS
Hey Steve, on the Airaid check the seal where the MAF and mounting bracket are bolted together. Pull filter off and stick a light in there. I just put one on 2 weeks ago and you could see light through there. I called Airaid thinking there should be a gasket and they said there isn't one. I made my own and took care of the problem. DO NOT USE SILICONE.
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98 Nascar Edition, Superchip, Airaid, Flowmaster 70 series, bedliner, in bed tool box, Profile bug deflector and window vents, Class III receiver hitch.
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98 Nascar Edition, Superchip, Airaid, Flowmaster 70 series, bedliner, in bed tool box, Profile bug deflector and window vents, Class III receiver hitch.
Senior Member
Joined: Aug 1999
Posts: 1,628
Likes: 0
From: Clemson SC US of A
Steve,
How can something that does not "emit" anything not meet emmisson standards? This thing only draws in air. I'm confused. Not "Street legal". Huh? I don't buy it.
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97 F-150 SC Lariat, White over gold, 4.6L (Windsor) automatic, 3.55 rear end, electronic 4X4, w/ every option of Lariat and ORP packages except the 17" wheels and the 4X4 decals, MOD so far= K&N air box mod, Gibson Super Truck, clear Bugflector II, Leer TSC 600 hard cover, Bridgestone Dueler OWL ATP 265/75 R-16's, TrailMaster VVS shocks, Smittybilt step bars, "White-white" head lamps.
How can something that does not "emit" anything not meet emmisson standards? This thing only draws in air. I'm confused. Not "Street legal". Huh? I don't buy it.
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97 F-150 SC Lariat, White over gold, 4.6L (Windsor) automatic, 3.55 rear end, electronic 4X4, w/ every option of Lariat and ORP packages except the 17" wheels and the 4X4 decals, MOD so far= K&N air box mod, Gibson Super Truck, clear Bugflector II, Leer TSC 600 hard cover, Bridgestone Dueler OWL ATP 265/75 R-16's, TrailMaster VVS shocks, Smittybilt step bars, "White-white" head lamps.