New Gen 4 Owner

[Bug Out]

mine shows 18ish, but if I hand calc it , its always 2MPG less. So to make myself feel good, I give out the readouts number...

My 05' 5. 9 6 spd w/4:10's, kept under 2K RPM, I'd easily get 20MPG-empty that is...

 

[TimothyLong]

TLong, I forgot to mention... With all the gitup and go these new ones have, the temptation to "go around " or pass the less then speed limit folks is almost hard not to do. . Especially those little snotty kids with their " fast and furious" little vacuum cleaner sounding zip zip cars, buzzing around like they have 'uncontrollable horses" under the hood... LOL

Oh, I agree 100%! I tend to refer to those annoying things as "Fart Cans"!

 

[TimothyLong]

What were you getting on your 03? 18-20 is pretty darn good for a new motor.

On my '03 I was getting about 17-18 mpg untuned, but with the Banks Six Gun at level 4 I was getting 21-22 mpg+. I agree that 18-20 mpg is good for a new engine. If this one does like the 5. 9L's did, I should expect to see an increase after about 5K - 10K miles.

 

[Joseph Donnelly]

DEF does have a shelf life which gets short in heat, so don't stock up on it.

 

[AH64ID]

On my '03 I was getting about 17-18 mpg untuned, but with the Banks Six Gun at level 4 I was getting 21-22 mpg+. I agree that 18-20 mpg is good for a new engine. If this one does like the 5. 9L's did, I should expect to see an increase after about 5K - 10K miles.

Did you hand calc the Banks numbers?

 

[TimothyLong]

Did you hand calc the Banks numbers?

No, it was per the on-board computer.

 

[TimothyLong]

DEF does have a shelf life which gets short in heat, so don't stock up on it.

Yes, I did see that on the box. I have it out in my shed right now and we're (hopefully) into our autumn temps, so heat shouldn't be an issue.

 

[LHarper]

Tim, great looking truck. With going to the 285 size tire, do you get any rub or even close to it? I have a truck coming and planning on changing the stock tires and am considering going up one size. Just do not want any rub issues. Thanks

 

[AH64ID]

No, it was per the on-board computer.

The mileage is not as good as you think it was then. The 3rd gen's aren't very accurate to begin with, and power adders like the Banks six-gun the accuracy falls off even more. The Six-Gun took the ECM signal and modified it to get the performance. Basicially at all times the ECM thinks you are burning less fuel than you really are.

I hear good things about the 13's EVIC accuracy thou, honestly anything with a 6. 7 is pretty accurate compared to a 3rd gen 5. 9.

 

[TimothyLong]

Tim, great looking truck. With going to the 285 size tire, do you get any rub or even close to it? I have a truck coming and planning on changing the stock tires and am considering going up one size. Just do not want any rub issues. Thanks

Thanks! No rub issues with a 285. Even with the Mopar mud flaps installed there is still plenty of room.

 

[TimothyLong]

The mileage is not as good as you think it was then. The 3rd gen's aren't very accurate to begin with, and power adders like the Banks six-gun the accuracy falls off even more. The Six-Gun took the ECM signal and modified it to get the performance. Basicially at all times the ECM thinks you are burning less fuel than you really are.

I hear good things about the 13's EVIC accuracy thou, honestly anything with a 6. 7 is pretty accurate compared to a 3rd gen 5. 9.

Yes, I am aware of the short comings of the on-board computer fuel mileage calculations in the gen 3's. Just some rough calculations that I did when I refuled told me that I was getting less than what was shown. Even at that, the tuner was giving better mpg. Didn't know that the Six-Gun hijacked the ECM signal that badly though.

 

[Bug Out]

I'm leaning on going to 285/70-17 myself most likely Nittos as the rating per tire is 3750lbs. Have you checked with the dealer to see if they can reflash the speedo to a 285/70-17?



per the tire size calc I found, those are only 3. 5 % larger then stock, less then the 4. 5% difference from the 18's the 3500 has.

 

[TimothyLong]

I'm leaning on going to 285/70-17 myself most likely Nittos as the rating per tire is 3750lbs. Have you checked with the dealer to see if they can reflash the speedo to a 285/70-17?

per the tire size calc I found, those are only 3. 5 % larger then stock, less then the 4. 5% difference from the 18's the 3500 has.

No, I haven't checked with a dealer yet about a reflash for the TPMS thresholds. Read a lot of complaints about it in other forums though. I will be heading to the dealer this coming week. I will make some inquiries and post what I am able to find out.

 

[LHarper]

Thank you Tim.

 

[TCDiesel]

No, I haven't checked with a dealer yet about a reflash for the TPMS thresholds. Read a lot of complaints about it in other forums though. I will be heading to the dealer this coming week. I will make some inquiries and post what I am able to find out.

Nah... just have the Dealer lower the minimum PSI, the label is on the Door for the minimum setting , the One's (2500) I look at were 50PSI, My 3500s don't require TPMS.

 

[TimothyLong]

Nah... just have the Dealer lower the minimum PSI, the label is on the Door for the minimum setting , the One's (2500) I look at were 50PSI, My 3500s don't require TPMS.

Todd, that's the plan if they can do it.