Originally Posted by Harrison_Berger
I have been pondering the benefits of filling a kegger for my own driving and I think that my mileage should improve as well. Filling the plenum is supposed to move the power band down, if you have more power at a lower rpm it means that you need less rpm to maintain a given speed. I try to cruise at 1500rpm-1500rpm, but this puts me at just at about 35mph-45mph, and most of my driving is is in 40/45 mph zones, so I am hoping that when I fill my plenum I will be able to maintain my 1500 rpm goal and be able to keep up with traffic.
Does this sound logical?
No it's wrong. The RPM of the engine in a certain gear will be the same at the same speed. If you're in OD at 45 doing 1500 RPM with a stock kegger, you'll be doing 1500 RPM at 45 with a modded kegger. Axle and driveline rotation will not be affected by the intake, just throttle response.
Where the change comes in is throttle position. If you're at, say 30 percent throttle to maintain 45 MPH and 1500 RPM with the stock kegger intake, but you mod it and now you're at 25 percent throttle to maintain the same speed and RPM, you're using a tad less fuel. (mind you these numbers are probably not accurate in correlation with eachother just using as reference)
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2000 Dodge Ram 1500 Single Cab, 5.9 Auto, 4.10's, Auburn LSD, Edelbrock headers, 2.5" true duals with crossover, MSD Superconductors, APS Plenum Kit, Level10 Trans kit, Trans-Go shift kit, 2-4 BellTech Drop, SS/T rims, Toyo Proxes ST 285-60-17's, Sir Michaels Roll Pan and tailgate handle relocator, Keystone bumper cover with light openings, PIAA fogs, painted grille shell, painted Street Scene Speed Grille Inserts, SCT XCAL-2, Alpine head unit, Infinity Components front, Infinity Coaxials back, Infinity 500W 4 channel amp, Infinity Basslink, new dash, steering wheel, and guage bezel.
1996 Dodge Ram 1500 Club Cab, 5.9 Auto, 4.10's, Detroit Locker, Race Truck Trends Nascar Bumper, Painted SS/T Stripes, Alpine HU, Alpine Sound Field Processor, MTX Thunderform. 5.9L bored .030 over, Sealed Power coated pistons, balanced and polished crank, Comp 210 Cam, MP Timing Chain tensioner, Melling HV oil pump, 1.92 oversized valves and mild porting, Pacesetter Longtube Headers, FMS 24lb Injectors, Level10 Transmission kit, Trans-Go shift kit, 5 gear OD Planetary. Way more to come.