fuel economy ?

[05 smoker]

ive searched and couldnt find what im looking for so if i missed it im sorry.
anyway im looking at buying a crewcab 4x4 6.0 but i found a dually kingranch i might buy. my ? is im planning on doing a sct tuned by eric 5" exhaust egr delete, etc. what kind of milage diffrence is there from a srw to a dual. dont care about towing milage just driving in town or 70 down the highway. any help will be great
thanks
mike

[late_99_PSD]

About 1-2 MPG

[smokersteve]

Between srw and drw, more like 2. the drw has higher gear ratio that drops mpg, along with the dual wheels of course.

[rotorhead24]

so the dually 350 could see ~21mpg w exhaust and econo tune??

[smokersteve]

Originally Posted by rotorhead24

so the dually 350 could see ~21mpg w exhaust and econo tune??

no the srw would be more capable to get that than the drw.

[05 smoker]

so 19 can be a realistic number with intown driving. my short test drive(20 min) go me 12 and that was with a little playing around and idling time. so you are saying i can expect a 7mpg increase with a custom tune and full exhaust?
thanks for the help so far
mike

[ScottyP5947]

Can't really believe the in cab display, best to hand calculate each tank. The way you drive it will really make the biggest difference, but a tuner will improve things a bit. Do you have the need for a DRW? I like them, don't get me wrong but I would never own one unless I really needed. Parking is hard enough in a SRW CC (longbed?) truck, DRW is a nightmare. You buy 6 tires instead of 4, etc.
just my thoughts!

Scott

[travisH3]

i dont know about 19mpg srw. im reg cab and single rear wheel and i get about 13-14. egr delete, custom tune, straight pipe exhaust, etc.... but i dont have the lightest foot. thats mostly in town, towing prolly 2k pounds 3 days a week. this is my first tuned diesel so the power never gets old. once you get ur tunes u will drive it like u stole it.

[STRKTHS73]

^^^ i also have a reg cab lift 35s an i just hand calculated my last fill up an it was like 15.9 mpg i can see a drw getting like 13 or 14 powerstrokes arent the most fuel friendly diesels lol

[smokersteve]

Originally Posted by 05 smoker

so 19 can be a realistic number with intown driving. my short test drive(20 min) go me 12 and that was with a little playing around and idling time. so you are saying i can expect a 7mpg increase with a custom tune and full exhaust?
thanks for the help so far
mike

19 with more high way miles, not city. city will be between 16 and 12, again, depending on driving, truck specs, and load.