Question: tuning 45% overs
- Thread starter DIESELMAFIAPER.LB7
- Start date
K well to update this I'm still having issues with these things I put the pilot fuel back to normal not taken anything out for the bigger nozzles an truck fine now that's it really cold like 10 to - 10 it smokes if I try an idle it up to warm up? But if I just let it idle it doesn't only for a sec when it first starts then clears out also should I play with my pilot timing I believe I'm hitting 30-32 with the pilot fuel ill have to.check the log again ill take a log at idle an show you guys at idle what it does
Yes I would but also seems like its just rich at idle an if the truck is to cold it will sputter when I start it not sure thats something I can tune out it even out after like 5-10 seconds if that then idles normal little smoke but cleans up after a little idle time is this just something I need to get used to with 45% overs or am I missing something extremely obvious 
On edit : I don't any issues threw the gears alot of its just at idle shit other then I have a hard time getting any MPG outta the damn thing around town
On edit : I don't any issues threw the gears alot of its just at idle shit other then I have a hard time getting any MPG outta the damn thing around town
Tell them everything that you have done...from idle on up that way there is a better chance for everyone to help you out. If it were me I would start messing with the multipliers for the cold start and cold idle smoke...add some pressure and maybe a lil bit of timing there. As far as the "rich" idle...I would try more pressure there, maybe more timing if the pressure doesn't clear it up.
I've bumped pressure an timing is at like 0-1° at idle main timing iirc ill have to double check an pilot is around 12-14° at idle maybe ill screw with the timing amounts an I pushed the multiplyers even farther then when you had set them?
I have 60 overs and it took taking down idol cells in main injc down abit, 40 mpa in fuel press base, and timing upped it about a degree in those cells also. As stated earlier the dvt helped alot of finding what pressure the truck preffered. This is off the top of my head... big injectors for me was/is still a hassle
30's aren't bad. Mines adjusted in pilot timing, pressure and pulse. Mine had a small rattle until I logged it at the point it would rattle and made adjustments from there. No haze, rattle gone, and milage is the same as stock injectors. Logging it helps out a ton.
Ya well i have a hard time driving an logging lol how much pilot timing did you take out steve? Also i took out just around idle pilot pulse didnt change anything maybe ill mess with the main injection timing and pulse at idle
my 2 cents on the hole thign is this;
just back down the idle PW its to large. . . i would say do this,you 45 over right? well take 45 divide by 2 = 22.5 now take that number and backdown the PW by 22.5% that should get you close. when you use larger sticks,more press will just shoot more fuel in the cylender. yes press will help the spray pattern,but you got to remember that more press with also flow more fuel!!! dont mess with timing,its all in the PW.
if the timing was working fine befor,then it will work with the larger sticks,its just a matter of finding the right PW at idle.
just my 2 cents
one more thing white smoke is to much fuel,and its not burning good,you said it only white smokes when the truck is cold right? well im going to say you have a pretty nice motor seting in that truck with a lot of work done to it right????? in taking internals.
well if you do i would say that your not going to get all the white smoke tuned out.
just back down the idle PW its to large. . . i would say do this,you 45 over right? well take 45 divide by 2 = 22.5 now take that number and backdown the PW by 22.5% that should get you close. when you use larger sticks,more press will just shoot more fuel in the cylender. yes press will help the spray pattern,but you got to remember that more press with also flow more fuel!!! dont mess with timing,its all in the PW.
if the timing was working fine befor,then it will work with the larger sticks,its just a matter of finding the right PW at idle.
just my 2 cents
one more thing white smoke is to much fuel,and its not burning good,you said it only white smokes when the truck is cold right? well im going to say you have a pretty nice motor seting in that truck with a lot of work done to it right????? in taking internals.
well if you do i would say that your not going to get all the white smoke tuned out.
pw played a part in my 60s, i have tweaked the mess out of my tuning, but idahorob built the tune... i knew enough not to bug him on things i could fix...the idol was hazing a little white smoke and had a little injector knock here and there... fuel pressure and timing were the only things i compensated in and the truck has no smoke and idols smooth. imho timing plays a nice key in it all... but im just a small fish in a big pond, this is something though alot of people struggle with.
im still tuning my 45's so far i have done it with just PW just about got it.
but also my truck is a full time puller so its no big deal if it white smokes a little. . . as long as it goes like hell...and i dont have a timing knock im good. . .
but also my truck is a full time puller so its no big deal if it white smokes a little. . . as long as it goes like hell...and i dont have a timing knock im good. . .
Ill try taking more out of the main pw I took 10% out just to try an no real difference an messed with pilot quantity an took my timing that was -3.6 to -1.8 from 600-1000rpm to 1-3 ° iirc also at idle my smoke is almost non existent its when I idle it up to warm up 1000-1100 it starts puking it at first then settles down to a good haze an it stinks. Also I took 10% from 400-1200 rpm ill take another 12.5 out an see how it works
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just my 2 cents
one more thing white smoke is to much fuel,and its not burning good,you said it only white smokes when the truck is cold right? well im going to say you have a pretty nice motor seting in that truck with a lot of work done to it right????? in taking internals.
well if you do i would say that your not going to get all the white smoke tuned out.
Well I have delipped lb7 pistons, the nozzles, Ported heads, nothing real special bigger Turbo ect
What is fp and timing looking like down there? Also, what pw are u down to now on the idol cells?
fp is 50 mpa timing from 600-1200 1-3.5 deg now and with 10% out of the main pw its
178.000000
218.000000
246.500000
300.000000
318.000000
334.000000
350.000000
in the 50 mpa line down to the 7mm3 line.... now its like this with 22.5% (total) out of it
155.750000
190.750000
215.687500
262.500000
278.250000
292.250000
also how the hell do you just paste the table from efi live into here??? that would make this much easier:rofl:
178.000000
218.000000
246.500000
300.000000
318.000000
334.000000
350.000000
in the 50 mpa line down to the 7mm3 line.... now its like this with 22.5% (total) out of it
155.750000
190.750000
215.687500
262.500000
278.250000
292.250000
also how the hell do you just paste the table from efi live into here??? that would make this much easier:rofl:
how much have you DELIPPED? whats the compression at now? and if im right the lower compression will also play a role in how the fuel burns.
ok let me get this right,the smoke is now at 1000-1200 rpm when its cold?
is the motor building boost at this point? if so how much?
if its not keep pulling PW out at that rpm range.
boost helps the fuel burn as well also if no boost,its hard to burn all the fuel your putting to the cylenders,because of lack of air.
to see what im talking about take a 20oz bottle,and a match,light the match,hold it inside the bottle,it will go out,when it runs out of air,yes their is fuel in the cylenders,but theirs way to much. the air to fuel ratio is still wrong.
yes you can change timing a little like maybe 2-3* but then with as much fuel its putting in the cylenders,it mite start to knock,because the pistion will becoming up on the compression stroke. . . im kinda in the dark because i dont have the tune your runing.
and i know their is a way to take a screan shot of the table with efi live but i cant remember how!
if you want send me the tune you were using BEFOR you started to mod the tables. send to [email protected] ill see if i can help you out a bit
i hope this helps