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Posted

I didnt want to mix up the threads by posting unrelated information so I figured I would start a new one.  This thread is for figuring out what works and what you find your truck likes.  

 

I did some more datalogging as of late and found that a more aggressive timing curve later in the rpm band, say 2500 + rpm, seems to pull harder up top.  Previous I was running tunes that maxed timing at 26*.  I took 2 tunes copied them and ran them back to back on the same stretch of road, same conditions.   I was not using wiretap for this so I will leave those details out

 

First Tune 29* max

Quote
Race 29*  
Number of Power Levels 6
RPM Limit 3700
Valet Mode  
Maximum Valet Mode Power 35
   
Timing Parameters  
Fuel Load Timing 1
Low PSI Timing Reduct 5
Timing Reduct Scaling 80
LightThrottle Timing Adv 1
Light Throttle Limit 35
Timing Equilzer  
1500RPM 16
2000RPM 19
2500RPM 24
3000RPM 27
MAX 29
Boost Level Fueling - CAN Bus  
0 PSI 88
1 PSI 90
2 PSI 92
3 PSI 94
4 PSI 98
5 PSI 102
6 PSI 106
7 PSI 110
8 PSI 114
9 PSI 118
10 PSI 122
11 PSI 126
12 PSI 130
13 PSI 134
14 PSI 138
15 PSI 142
16 PSI 146
18 PSI 150
20 PSI 150
22 PSI 150
24 PSI 150
26 PSI 150
28 PSI 150
30+ PSI 150

 

Second Tune 26* max

Quote
race 26*  
Number of Power Levels 6
RPM Limit 3700
Valet Mode  
Maximum Valet Mode Power 35
   
Timing Parameters  
Fuel Load Timing 1
Low PSI Timing Reduct 5
Timing Reduct Scaling 80
LightThrottle Timing Adv 1
Light Throttle Limit 35
Timing Equilzer  
1500RPM 16
2000RPM 19
2500RPM 22
3000RPM 25
MAX 26
Boost Level Fueling - CAN Bus  
0 PSI 88
1 PSI 90
2 PSI 92
3 PSI 94
4 PSI 98
5 PSI 102
6 PSI 106
7 PSI 110
8 PSI 114
9 PSI 118
10 PSI 122
11 PSI 126
12 PSI 130
13 PSI 134
14 PSI 138
15 PSI 142
16 PSI 146
18 PSI 150
20 PSI 150
22 PSI 150
24 PSI 150
26 PSI 150
28 PSI 150
30+ PSI 150

 

29v26..PNG

 

The interesting thing is the tunes are the same except for the timing above 2500 rpm.  If you look on the graph rpms hit that 2500 rpm mark at about line 20-21, each line is ~.3 seconds so 3 lines = 1 second.    You can see where timing jumps and also where boost jumps. 

 

Now keep in mind the graphs are not exact so take them with a grain of salt, but everything appears to show that the tune with higher timing up top gives faster time to 50 mph, and a faster ramp up of boost.  The higher timing tune appeared to reach 50 mph nearly 1 second faster.

 

as always studs are a good idea, but I am fairly sure anyone can run this timing above 2500 rpm.    If people are not blowing their heads off left and right with other tuners then there is no reason why this type of timing curve will hurt with the Quadzilla. 

 

 

Food for thought, open to other thoughts.

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3 hours ago, Dodgeih said:

Anyone want to do full auto swap for my nv4500????? PLEASE!!! 

I have one off a real low mile 01 but it may or may not be full of water. Its in my parts truck at the moment.

8 hours ago, dirty830 said:

I have one off a real low mile 01 but it may or may not be full of water. Its in my parts truck at the moment.

 

Ha, know of anymore hurricane trucks laying around?

1 minute ago, Carbur8tr said:

 

Ha, know of anymore hurricane trucks laying around?

I wish. this was actually a drug mule truck and was wrecked into a river then sat at a impound lot 15 years.

I've been looking for a while but seems like a lot of the yards over towards Houston are keeping fairly tight reigns on their inventory. 

I know of an 01 4x4 with a 5 speed coming in to a yard local to me. I always thought about doing the swap, But I think a built automatic is what I prefer. 

I always wanted a six speed... until I got a six speed lol

Just now, dirty830 said:

I always wanted a six speed... until I got a six speed lol

 

 

With NV5600 I have to shift 1 extra time before I hit 60mph.    Shifts are not as smooth as a nv4500 either.

  • Owner

6 speed gains you nothing on the highway being the top two gears at the very same ratio as a 5 speed. Just for point of reference I'm typically in 4th gear by 30 MPH. So 1st to 4th on a 6 speed is all rowed out before you reach 30 MPH. Being 5th gear is the same as my 4th on NV4500.

 

image.jpeg

I love my 6 for towing which I don't do a lot, but driving around not as much. Taking off in 2nd without slipping the clutch almost impossible and taking off in 1st is too low but I'm used to it now. Built auto would be great too but but then my wife would probably want to dive it :shifty:

  • Author

Give me a 5/6 speed anyday.  I dont need to go 0-100 fast,  a good 3rd gear pull is enough for me.  The auto gearing is just too wide for my taste while towing.   towing up the pass ( 35 mph speed limit) sucks.  little to low in 3rd and screaming in 2nd.  I dont need the power I have in 2nd.

@Me78569 I agree with you on the towing aspect between an auto and manual. The gearing spread is just all wrong to tow well. A 5 speed auto would be great.

Probably would never handle the power and abuse, but I think a CVT trans behind a Cummins would be neat. My wife's Mini Cooper has the CVT and it just winds out and goes.

I just want to go fast and do boosted launches

I stand corrected. I have a 6-speed coming in.

5 hours ago, Me78569 said:

Give me a 5/6 speed anyday.  I dont need to go 0-100 fast,  a good 3rd gear pull is enough for me.  The auto gearing is just too wide for my taste while towing.   towing up the pass ( 35 mph speed limit) sucks.  little to low in 3rd and screaming in 2nd.  I dont need the power I have in 2nd.

 

That's why I got second gear lockup. Sooooo much better. I still want a manual though.

3 minutes ago, kzimmer said:

 

That's why I got second gear lockup. Sooooo much better. I still want a manual though.

Drive down to Carroll Iowa..we'll swap! Lol

5 hours ago, Dodgeih said:

I just want to go fast and do boosted launches

Central wi

I love my 6 speed. buttery smooth. 

55 minutes ago, Silverdodge said:

Central wi

That's not to far..depending where, 6hrs one way.... Pm me if you're really interested in something

6 hours ago, Dodgeih said:

Drive down to Carroll Iowa..we'll swap! Lol

 

Haha, for the amount of fuel I could probably find one here!

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Welcome To Mopar1973Man.Com LLC

We are privately owned, with access to a professional Diesel Mechanic, who can provide additional support for Dodge Ram Cummins Diesel vehicles. Many detailed information is FREE and available to read. However, in order to interact directly with our Diesel Mechanic, Michael, by phone, via zoom, or as the web-based option, Subscription Plans are offered that will enable these and other features.  Go to the Subscription Page and Select a desired plan. At any time you wish to cancel the Subscription, click Subscription Page, select the 'Cancel' button, and it will be canceled. For your convenience, all subscriptions are on auto-renewal.