2021 7.3 vs 6.7

[PapaRaptor]

Thanks for all the good advice. I put my order in today and went with a 7.3 F350 Tremor. Dealer said truck should be ready around December but will contact me when they have a more accurate timetable.

congrats, coming from an F150 you made a good choice

 

[ECHO-24]

I traded in my 6.7 for a 7.3, I didn't work it hard enough and was replacing ERG coolers way to often.
I miss the MPG a little, but love having the feel of a big gas engine again.

 

[richtor]

I traded in my 6.7 for a 7.3, I didn't work it hard enough and was replacing ERG coolers way to often.
I miss the MPG a little, but love having the feel of a big gas engine again.

What was 6.7 mpg and what year did you have. A friend told me his gets 14 everywhere in his 18 platinum. I get 13 in the city with my 7.3.

 

[ECHO-24]

What was 6.7 mpg and what year did you have. A friend told me his gets 14 everywhere in his 18 platinum. I get 13 in the city with my 7.3.

Had a 2012, only put 70,000 miles on it. max I ever got for mileage was 17, averaged 15.
My new 7.3 I get around 13 also. Love that truck, but I did do a 5 star tune to get ride of the throttle lag, it helped a lot.

 

[plethoragreen]

Had a 2012, only put 70,000 miles on it. max I ever got for mileage was 17, averaged 15.
My new 7.3 I get around 13 also. Love that truck, but I did do a 5 star tune to get ride of the throttle lag, it helped a lot.

What 5 Star tune are you running? Big difference?

I have a 7.3 and have my tunes, but I'm waiiting until I hit 1k miles to load it. I was planning on running the 87 Performance/All-Terrain tune until first oil change at 10k miles then run the 85 due to my elevation (6,000 ft +).

 

[ECHO-24]

What 5 Star tune are you running? Big difference?

I have a 7.3 and have my tunes, but I'm waiiting until I hit 1k miles to load it. I was planning on running the 87 Performance/All-Terrain tune until first oil change at 10k miles then run the 85 due to my elevation (6,000 ft +).

I'm only running pedal boost, drives a lot better. I have all the other 87 tunes also, but this is doing what I was looking for ( no more throttle lag)

 

[plethoragreen]

I'm only running pedal boost, drives a lot better. I have all the other 87 tunes also, but this is doing what I was looking for ( no more throttle lag)

Sounds good. I had 5 Star on my 2013 Ecoboost and the transmission change was really the best part of it. It held the correct gear instead of always trying to upshift all the way and lag the motor. So when you wanted power there was no need to downshift you were already there. I'm looking forward to that as well as running 85.

NA at 6,000+ feet shouldn't need much octane to give factory results and with improved transmission mapping it's it's a win win.

I ran 91 tune in the Ecoboost but those days are over... I'd rather have the stock power on cheap gas.

 

[ECHO-24]

Sounds good. I had 5 Star on my 2013 Ecoboost and the transmission change was really the best part of it. It held the correct gear instead of always trying to upshift all the way and lag the motor. So when you wanted power there was no need to downshift you were already there. I'm looking forward to that as well as running 85.

NA at 6,000+ feet shouldn't need much octane to give factory results and with improved transmission mapping it's it's a win win.

I ran 91 tune in the Ecoboost but those days are over... I'd rather have the stock power on cheap gas.

Yeah, cant worry about MPG in these trucks, so no need to buy 91 octane

 

[oursomedayisnow]

Thanks for all the good advice. I put my order in today and went with a 7.3 F350 Tremor. Dealer said truck should be ready around December but will contact me when they have a more accurate timetable.

You wont be underpowered that’s for sure. I’ve towed a shitload over the past 4 years. Well over 70k miles with a 6.7, we went with the 7.3 and it’s a low rpm beast, step on it and you just smile

 

[Eloy.sedillo.82]

You're not gonna like 9 miles to the gallon if your hauling that thing with any kind of distance or frequently.

I went with the gasser, because I tow a boat 2 times a year, short distances. Sounds like you might be a Diesel candidate.

It's a double edge sword.....7.3 your paying less per gallon but the diesel your fuel consumption is better but paying around $.50 per gallon not to mention how much more it is for oil changes and fuel filters on the diesel. Both have the power you need to get the job done. I went with the 7.3 for these reasons

 

[FrontRangeDave]

I traded in my 6.7 for a 7.3, I didn't work it hard enough and was replacing ERG coolers way to often.
I miss the MPG a little, but love having the feel of a big gas engine again.

Diesel newbie here. Can you tell me how not working your truck hard enough relates to having to replace ERG coolers?

 

[TxTremor]

Diesel newbie here. Can you tell me how not working your truck hard enough relates to having to replace ERG coolers?

For these new emission systems to work properly they need to work at a higher temperature to efficiently burn the exhaust gas to reduce pollutants. When the engine is not working (short trips, longs idles, stop and go, etc) this allows build up in the system that can lead to sensor issues, egr issues, or dpf problems among other things. When the engine is working and getting hot the whole process is working better and cleaning out properly. My experience is with ag/construction equipment but the emissions systems are very similar. These are not the diesel engines of years past they have to be operated a certain way or you might be dealing with lots of expensive repairs down the road.

 

[abill]

It's a double edge sword.....7.3 your paying less per gallon but the diesel your fuel consumption is better but paying around $.50 per gallon not to mention how much more it is for oil changes and fuel filters on the diesel. Both have the power you need to get the job done. I went with the 7.3 for these reasons

Thankfully, around here diesel finally is, and has been, the same price as unleaded for a while now.

 

[FrontRangeDave]

For these new emission systems to work properly they need to work at a higher temperature to efficiently burn the exhaust gas to reduce pollutants. When the engine is not working (short trips, longs idles, stop and go, etc) this allows build up in the system that can lead to sensor issues, egr issues, or dpf problems among other things. When the engine is working and getting hot the whole process is working better and cleaning out properly. My experience is with ag/construction equipment but the emissions systems are very similar. These are not the diesel engines of years past they have to be operated a certain way or you might be dealing with lots of expensive repairs down the road.

Well that’s unfortunate. I am slated to pick up a 6.7 in a few weeks. Can you provide any advice for an owner who will be using it as his daily driver ( 15k miles/yr) The only towing I’ll be doing is a snowmobile periodically in the winter and hauling hunting pack animals in the fall. But it will going on road trips with a slide in camper all over the west once a month. I got the 6.7 for the extra power going up and down mountains and just driving home is a 4000ft elevation gain. My 04 V8 is a pig.

 

[Marley]

Well that’s unfortunate. I am slated to pick up a 6.7 in a few weeks. Can you provide any advice for an owner who will be using it as his daily driver ( 15k miles/yr) The only towing I’ll be doing is a snowmobile periodically in the winter and hauling hunting pack animals in the fall. But it will going on road trips with a slide in camper all over the west once a month. I got the 6.7 for the extra power going up and down mountains and just driving home is a 4000ft elevation gain. My 04 V8 is a pig.

You'll be fine, sounds like the perfect truck for your needs.

He was referring to low usage, short trips to the post office.
All new diesel engines are susceptible to soot buildup due to emission regulations, recirculating exhaust.

Run it, you'll be fine.

 

[TxTremor]

Well that’s unfortunate. I am slated to pick up a 6.7 in a few weeks. Can you provide any advice for an owner who will be using it as his daily driver ( 15k miles/yr) The only towing I’ll be doing is a snowmobile periodically in the winter and hauling hunting pack animals in the fall. But it will going on road trips with a slide in camper all over the west once a month. I got the 6.7 for the extra power going up and down mountains and just driving home is a 4000ft elevation gain. My 04 V8 is a pig.

I may not be the best to ask as my experience is related to ag/construction equipment, so maybe other owners will have some good tips. What I usually do with my equipment is limit idling, 5-10 minute warm up depending on outside temp and a 2-5 minute cool down period after work before shutdown. Now if it is very cold or they have to break for maybe 10-15 minutes I may let it idle a little longer, but try to limit any unnecessary idling, it seems to help. On a regen, never shutdown during a regen, if you get home and it starts a regen let it finish. I always tell my guys it doesn't matter when but never interrupt a regen always let it do it when it needs to. On your commute every once in a while drop down a couple gears and let the engine work a little, try to simulate pulling a trailer and bump up the RPMs to build some heat. We do this on some equipment that might not always be working hard by dropping down a gear or two and letting the engine rev to build some heat. Lastly always stay on top of your maintenance, use good quality fuel, and keep your air filters clean. Hopefully others with the 6.7 can chime in with tips but this is what I do with my own equipment and I should disclaim that I am waiting on a 7.3 Tremor to be delivered soon so I am no expert by any means. Hope this help some.

 

[ECHO-24]

Well that’s unfortunate. I am slated to pick up a 6.7 in a few weeks. Can you provide any advice for an owner who will be using it as his daily driver ( 15k miles/yr) The only towing I’ll be doing is a snowmobile periodically in the winter and hauling hunting pack animals in the fall. But it will going on road trips with a slide in camper all over the west once a month. I got the 6.7 for the extra power going up and down mountains and just driving home is a 4000ft elevation gain. My 04 V8 is a pig.

Put your foot into it often, it will be fine. Looks like you will keep it working hard.

 

[abill]

I may not be the best to ask as my experience is related to ag/construction equipment, so maybe other owners will have some good tips. What I usually do with my equipment is limit idling, 5-10 minute warm up depending on outside temp and a 2-5 minute cool down period after work before shutdown. Now if it is very cold or they have to break for maybe 10-15 minutes I may let it idle a little longer, but try to limit any unnecessary idling, it seems to help. On a regen, never shutdown during a regen, if you get home and it starts a regen let it finish. I always tell my guys it doesn't matter when but never interrupt a regen always let it do it when it needs to. On your commute every once in a while drop down a couple gears and let the engine work a little, try to simulate pulling a trailer and bump up the RPMs to build some heat. We do this on some equipment that might not always be working hard by dropping down a gear or two and letting the engine rev to build some heat. Lastly always stay on top of your maintenance, use good quality fuel, and keep your air filters clean. Hopefully others with the 6.7 can chime in with tips but this is what I do with my own equipment and I should disclaim that I am waiting on a 7.3 Tremor to be delivered soon so I am no expert by any means. Hope this help some.

I wish it let you know when it was in re-gen though.

Reading through the process though, from the way I understand it... if you kill the truck during a re-gen, no biggie, upon the next engine start it will go right back into the re-gen again once it reaches the correct exhaust temps. Now, with that being said....it is understandable why the "short" trips are really bad... the engine would rarely be able to complete a re-gen.