In general you would run a 1450 us tune 14.5 to 15.5 degrees at 3250 rpms. The higher timing generates the excessive smoke as well. I generally on run 48 to 52 percent timing splits on the big end. Numbers are all relative to where you are in the mapping. If you run the numbers on the timing calculator you would find that you are putting too much in before TDC and would find improved results with less timimg.
Big Injector timing
- Thread starter x MadMAX DIESEL
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That timing calculated never works on my computer. But I'm running 30 down the whole track pretty much. 3700-4500rpm is all 30 degrees when full throttle
You think 35 is to high? Thinking 34-35 and about 1200us. I'm tired of getting beat, bout to abuse it lol
Idk man this thing smokes quite a bit now haha that's why I was thinking about cutting back pulse and changing timing
Yeah I know it. I wasn't sure of where an engine dyno was last off season. Can't use a chassis dyno
GMC_2002_Dmax
The Still Master
Injector latency and pressure drop when the needle lifts off the seat has to be factored as well as pilot timing or lack of.........:thumb:
The timing calculator will figure out in theory a 50/50 split but the CADEG pid will tell you how many degrees the injector is actually dwelled open during the compression/power stroke.
The only true answer without a dyno and cylinder pressure monitoring gauge is your ears and you ass in the seat.
If you can figure out what a fuel rattle, pilot rattle or timing rattle sound like/different then you have something..........
Spend the time, use the map functions in the software and log it.
Good Luck
The timing calculator will figure out in theory a 50/50 split but the CADEG pid will tell you how many degrees the injector is actually dwelled open during the compression/power stroke.
The only true answer without a dyno and cylinder pressure monitoring gauge is your ears and you ass in the seat.
If you can figure out what a fuel rattle, pilot rattle or timing rattle sound like/different then you have something..........
Spend the time, use the map functions in the software and log it.
Good Luck
Should I be looking for a 50/50 split end result? Yes is my lbz. I guess I figured all the hot tunes would be throwing in all the fuel btdc anyways.
So how can I tell what degree it would be. You'd have 90 degrees or 45 really to stay outta if it took a second per degree injection. But were talking milliseconds lol do you have any guess what a 1200 us would be timed with your 60? Would that be as little as 10* or something? I'm really not scared to pull the motor apart and replace everything that needs it. But I don't want to window a block or need to over bore really
Well i am trying to download it on an ipad now and it wont allow it. In the past it wouldnt download without like 500 errors on my computer. So maybe i just need a new computer. But "in theory" running such a low pulse, even with high timing shouldnt have many negative effects as far as pressures etc. right? Basically thinking say 30* 3000stock spray, would put more stress 30* 1500us big sticks cause its actually spraying longer. I was really jw what how much timing these 2.6 3.0 are running. I wasnt sure if it was like 20 or more like 30+, just a very curious question haha
We run more than 30* and 1450us with 400% overs, but 30* and up is in higher rpms...
The problem is to much fuel!!! I recommend increasing injection pressure and decreasing injector energizing times!