I'm having a problem getting part throttle rattle out in my truck, I've been tuning it myself since day one and never had this problem unti lthe new motor that is only 15.5:1, any clues ? do I actually need more timing ?
Tuning a low compression motor
- Thread starter xcablb7
- Start date
I am sure he means 50 MPa. You'd have to have terrible timing or something to inject 50 mm3 and just idle...
not really, some bought tunes i've seen in friends trucks rattle worse than this, i just don't want to be hurting it anyone is welcome to look at it and tell me what they think, power is more than i could ask for considering i'm still running stock injectors, just trying to get the driveability better
I would like to see what you did? As for pressure I would keep it the same for now
this is a issue at 18-2400 rpm?
this is a issue at 18-2400 rpm?
[email protected]
I won't be home for a while though, but I know you just need minor tweaking.
Some people need to remove time some need to add ? Every truck is different
best to just call and I'll try to help,I ain't a great tuner but I do understand the tables
403-318-6071
I won't be home for a while though, but I know you just need minor tweaking.
Some people need to remove time some need to add ? Every truck is different
best to just call and I'll try to help,I ain't a great tuner but I do understand the tables
403-318-6071
ok i'll send it to you now prob call you tomorrow starting to fall asleep at the keyboard here lol
stock injectors,
cam specs
.453in .470 ex
266 285
112 lobe sep
simon i tried that email @yahoo.com said no such address ?
cam specs
.453in .470 ex
266 285
112 lobe sep
simon i tried that email @yahoo.com said no such address ?
little update, truck now has 80% over injectors and i've been battling this rattle all along, jeff toman sent me a base tune to start with and i've played with it in almost every area. i finally found a good compromise from a few tables:
tbiq, max injected fuel quantity, and pilot quantity,
i got it to a point that when the truck was cold i noticed very little rattle so i did a few logs and tried to watch what changed as the truck warmed up.
what i found was the pilot inj quantity was higher because of its ect multiplier and right at the point it was dropping is where the rattle was coming in.
i raised the quantity a bit and the rattle is all but gone.
i'm going to play with the main inj timing a little bit to get a little better mileage
just thought this might help anyone with a similar issue
tbiq, max injected fuel quantity, and pilot quantity,
i got it to a point that when the truck was cold i noticed very little rattle so i did a few logs and tried to watch what changed as the truck warmed up.
what i found was the pilot inj quantity was higher because of its ect multiplier and right at the point it was dropping is where the rattle was coming in.
i raised the quantity a bit and the rattle is all but gone.
i'm going to play with the main inj timing a little bit to get a little better mileage
just thought this might help anyone with a similar issue