Bucking in 4th and steady state 40 mph

[CSG]

This is my daily tune 

Power levels 6

Rpm 3400

Valet 50%

Max stretch 1700

Tps max 100

Tps min 0

Min pump tap 0

Low boost 8

Boost scale 40

Max load timing offset 2

Low psi reduct 2

Timing scale 100

Light throttle advance 2

Light throttle limit 35%

Rpm timing 14, 17, 20, 23, 25

0 84

1 84

2 85

3 86

4 87

5 88

6 89

7 90

8 92

9 94

10 96

11 98

12 100

13 104

14 108

15 112

16 116

18 120

20 124

22 128

24 132

26 136

28 140

30 150

 

[Me78569]

what boost level does this happen at?

 

I dont think it is timing related, likely fueling or lash related.  

 

Does it buck on the default tune?  Does it buck on lvl 3 vs lvl 5?

[CSG]

Yes it's worse on the default tune. I've been running it on level 3 and it does it. I'll have to try the upper levels to see if it's any better

[Mopar1973Man]

You might try dropping the Light Throttle Limit to 25-30% so it drops out of cruise timing sooner. Then on the Low Boost timing I would go up to 3 or 4 degrees so it retards enough on heavier loads. If your hanging on high cruise timing to long transition to performance timing might be coming on too late. Just a crazy thought.

[CSG]

I put the setting you're and it is better I still hear a little but don't feel it. Boost is anywhere from 05 psi when it happens

[Me78569]

@Mopar1973Man is getting the hang of thing tuning wise haha.  Mike hit the nail on the head, you were in cruise timing rather than performance timing that caused too much timing in that situtation.  


What load % are you at when you hear it now? above or below the ligh tthrottle limit

[CSG]

Load is at 22-26

2 lbs boost

1550-1775 rpm

It seems to go away once I hit 3 lbs boost or 30 % load

[Me78569]

What load % do you cruise at moving down the road at your typical "cruise" state