PP Stage 1 BW and I went from around 7.4 mpg to around 8.0 mpg when I put the new manifold and turbo on. My old oringinal manifold was leaking pretty bad too.
I have worked on it real hard and totally changed my driving habits.
Using www.mygauges.com helped alot too.
Real world MPG
Discussion in 'Trucks [ Eighteen Wheelers ]' started by vijay, Jul 31, 2011.
Page 4 of 5
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Wow, that's a good gain , how do you like that turbo, are you lacking any bottom end power compared to the factory turbo?
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379,PETERBILT, 04 accert, 550+hp on cruise,475 on foot-feed, 13 speed,3.55 rears 22.5 tall rubber running bridgestones, i run the speed limit max 70, 6.25 mpg 3 years running, But i pull a tank and usually @ gross 65% , i do not have of them fuel saving gadgets ,still have the factory mufflers but will change them this fall, I only idle to unload, apu for over nights
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Medium & Heavy Duty Mufflers
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*Tests performed on a Peterbilt® Class 8 truck with a Caterpillar® C-12 engine. Measured on vehicles equipped with a Mega-Flow® Muffler and identical vehicles equipped with OE mufflers over a 6-month period for a total of 312,961 miles.
Key Features of the Mega-Flow® Muffler
- Reduced backpressure without sacrificing acoustics! The Mega-Flow® muffler combines an open-style design with OCF roving to produce a muffler that improves fuel efficiency without impact on acoustics, two key needs of the fleet. Other mufflers currently available address one at the expense of the other.
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The Challenger Thanks this. -
Inter 9200, c-12 with fuel temp and desactived wastegate and walker noisebreaker muffler.Hauling oversize boats one way and empty the other way,yearly ifta report show 7 mpg.
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06 Freightliner Columbia 590k miles, c15 acert msx, 10 sp, 435 hp, 3, 73 ratio, 22,5 tires, single muffler. Mpg 5.5- 5.75, no idling, limited at 65mph , otr close to 80 000 lbs. Not good mpg. I"m looking to do some tuning.
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95 w9, 3406e stock was 475..did free flows, 550 hp cam,different turbo, 550hp program ecm, fuel temp and boost combo off ebay. Now 6.9 mpg pulling bullrack
SHC Thanks this. -
'95 W.Star
3406E @500hp w/temp+boost wire, and free flowing mufflers
18 speed
4.11
11R24.5 Winter deep caps
Pulling tanker @ roughly 100K gross
Average field distance from farm about 5-7 miles
About 15% of the time spent stationary loading or unloading
2.7-2.9 mpg
Luckily we only spend 5-6 weeks out of the year on this job!SHC Thanks this. -
2004 WS 4900EX
C-15 MBN stock tune
3.55 rears
13spd
pulling 16k loaded, 12k empty
going 60mph I average 7.2mpg, but add in a head wind and this 18" bumper screws me bad, about 6.2 average then
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