Me78569

Can someone explain to me how a keyway would alter timing more than a % of a * ? I have always been confused on that.

no idea haha, I would assume you would need to pull the cover and rotate the entire vp gear 1 tooth advanced. Doesn't sound fun to me, but yea I guess someone might want that.

The IOD covers a lot of stuff in the cab. I would get the FSM from the downloads section and start chasing wires.

truth. Wonder what a warm truck would idle like at 20*? I know when I tried to idle a cold truck at 11* it wouldn't have it....

I would say our trucks have a rare issue that they are worth more in the real world compared what they should be worth on paper. It's hard for an insurance company to justify that a 16 year old vehicle with 200+k miles is still work 10+k on paper that's nutso. That's why there is agree'd upon value plans.

Is it leaking? If yes replace if no don't worry about it

and old vehicle is an old vehicle. Best thing you can do is keep your reciepts for things and fight with them to get as much as you can. However if the insurance company gave me $9 for my truck I would be on cloud 9.

Never even heard one run haha.

I don't see why not, the VP44 doesn't know it's actual mechanical timing, it just gets a timing command from the ecm and does it. If it is mechanically advanced by 5* then you tell it to do a timing value it will aways be a* + ecm timing = total timing. I won't try it, but surely someone wants to haha. Heck if someone wnated to try I would even write them a tune that idle'd at 7* vs the normal 12*

So you're saying you have a lot of mass? too much ?

What does a "Stage 3" entail?

@Mopar1973Man still running 3* of cruise timing? That will try to get timing at 20* when at cruise.

My v2.2 tune is as follows Power Levels: 6 Fuel Load Timing:2 Low PSI Timing Reduct:2 Timing Reduct Scaling: 100 Light Throttle Timing Adv:2 Light Throttle Timing Load Limit: 30 Timing vs rpm 1500: 16 2000: 18 2500: 23 3000: 25 Timing Max: 26 Pump Stretch: 1750 TPS Pump max: 100 TPS Pump Min 20 Minimum Pump Tap Fueling Percentage:0 Pump Low Boost Scale PSI: 5 Boost Scaling: 40 RPM Limit: 3400 Power Reduction: 35 0 PSI %: 87 1 PSI %: 88 2 PSI %: 89 3 PSI %: 90 4 PSI %: 91 5 PSI %: 92 6 PSI %: 93 7 PSI %: 94 8 PSI %: 95 9 PSI %: 96 10 PSI %: 98 11 PSI %: 100 12 PSI %: 102 13 PSI %: 104 14 PSI %: 106 15 PSI %: 108 16 PSI %: 110 18 PSI %: 114 20 PSI %: 118 22 PSI %: 122 24 PSI %: 126 26 PSI %: 130 28 PSI %: 134 30 PSI %: 138

It's really a balancing act to see how long canbus fueling can be held up past 3200. If you look at the truck wrong with revs that high holding canbus fueling it just shuts off. I'll get it nailed down.

Once canbus falls out wiretap is left "guessing" for lack of a better word. Tyler I did get fueling extended to 3400. Not full fuel but a more delayed ramp down. I am gonna slowly beef up the fueling at the end until we find the limit.

The filter is covering up an issue. Junk the filter and test for AC noise. It's like putting duct tape over a hole in a canoe... it might work for a bit, but at some point it will let loose and the result of the issue is a lot worse in the middle of the lake compared to on shore.

got ya. If you are ok with the smoke level then leave it. Does it smoke on lvl3 driving in the same manner? If it doesn't then bump your wiretap low limit psi to 8psi and drop stretch slightly, but I am running 1750 in my tune and I don't have wiretap smoke. by my tune starts at ~%88...I think

also I can't remember what your fueling setup is anymore. 7 x .010's ?

What RPM is the surging / smoke puffs happening at? 3000+ rpm? I'd prob drop your upper end timing a bit and see if the surging stops. Maybe try 27* maybe 28* really depends on where the popping is happning. If max is at 30* then you will see 26* at 3000 rpm and 30 at 3500. That's a pretty aggressive ramp up while canbus fuel is falling. I am assuming you have studs? your stupid tune has a VERY aggressive timing map haha. I don't know if I would run that aggressive down low

Keep in mind we can ask for whatever we want, the vp44 will do what we ask until phyiscal limitations are hit, IE we can ask for 36* and it will show 36 on the screen, but it will only actually be doing ~30. I can't tell your exactly where the limit is, but I do believe it is above 26* as Tyler sent some OEM data logs with timing approaching 29*. I can't imagine that the ecm would ask for more timing than possible. I also want to point out that is it now possible to mechanically advance the pump by 5*, 1 tooth, and pull back timing in your Quad by 5* down low while keeping timing high up top. You will effectively get a very controlled ~35* of timing if you choose to. It would idle funky, but once you got on the throttle I don't think there would be an issue.

30 is possible according to what I have seen the ECM ask for when cold.

@Carbur8tr I am still working to extend fueling further. as you approach 3500 rpm the ecm get's more and more picky. If you hit 3500 and the canbus message isn't at 0 then truck will actually shutdown.

Yea, if the ecm reprots boost in KPA you would be allowed 255 in a 1 byte value, which translated to psi would be 72.xx (kpa * 2) / 7 = psi. It's actually 6.93492728 or something like that but you get the point

@Mopar1973Man My truck reports map values as a 1 byte string. So long as the max value is under 255 in whatever format it is you shouldn't need more than 1 byte. To read a 2 byte string you would just do A + (B * 256)

that's an interesting one.