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Old 05-01-2021, 11:00 AM   #1
Mini-Skoolie
 
Join Date: Apr 2021
Location: Montreal, Canada
Posts: 66
Chassis: Blue Bird
Engine: 6.7 Cummins
Emission delete 6.7 vs 8.3 vs 5.9 Cummins

Hey guys, sorry if it's been posted before, how does an emissions deleted 6.7 stack up against the 8.3 and 5.9, which do you think is best of the 3 (power/reliability/mileage/ease of maintenance) and why? And if you have fuel mileage of a 6.7 deleted please post it up! I'm seeing 12-18 mpg is that accurate?

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Old 05-01-2021, 04:26 PM   #2
Mini-Skoolie
 
Join Date: Apr 2021
Location: Montreal, Canada
Posts: 66
Chassis: Blue Bird
Engine: 6.7 Cummins
The other posts I have found do not go much into details or which engines are better for whichever reasons, so hopefully someone can chime in! I am looking at some newer Saf-f-T liners as I love the look, and an wondering if the emissions delete will allow for a better engine and mileage or is it still better to go with older models.
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Old 05-01-2021, 07:57 PM   #3
Bus Crazy
 
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Join Date: Nov 2014
Location: NM USA KD6WJG
Posts: 1,325
Year: 1991
Coachwork: Bluebird
Chassis: All American RE 40 FEET
Engine: Cummins 8.3
By newer what year models are you thinking?
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Old 05-01-2021, 08:58 PM   #4
Mini-Skoolie
 
Join Date: Apr 2021
Location: Montreal, Canada
Posts: 66
Chassis: Blue Bird
Engine: 6.7 Cummins
Newer compared to what people on this forum recommend. 2010-2014
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Old 05-21-2021, 02:20 PM   #5
Mini-Skoolie
 
Join Date: May 2020
Location: San Diego
Posts: 21
Year: 1996
Coachwork: Thomas
Engine: Cummins 5.9 common rail
How do you plan to accomplish the “emissions delete” on the newer bus?
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Old 05-21-2021, 06:15 PM   #6
Bus Nut
 
Join Date: Jan 2021
Location: On the road
Posts: 348
Year: 2013
Chassis: IC RE
Engine: HT570 / 3500SP
Rated Cap: 4
Quote:
Originally Posted by CompLexxx View Post
Hey guys, sorry if it's been posted before, how does an emissions deleted 6.7 stack up against the 8.3 and 5.9, which do you think is best of the 3 (power/reliability/mileage/ease of maintenance) and why? And if you have fuel mileage of a 6.7 deleted please post it up! I'm seeing 12-18 mpg is that accurate?
No idea with a short bus, but with a full size pusher you'll never see 12-18 mpg, whatever the engine.
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