im new to this and would like someone to look at my ve tables and maybe help me out a little bit




thanks if you need more info on the engine or any more tables just let me know
Thanks
Chris

 

They look ok to me, but we need more info. what engine specs? and will you explain to me how you got that to pop up in to "picture mode"? I've been trying to figure this out for a while now,lol

 

thanks its in a pickup it is a 383 with tpi full length headers, world sr torquer heads, full roller 1:6 rockers, a comp cams roller cam http://www.compcams.com/Company/CC/c...?csid=207&sb=0 all i did for the tables to be in a picture like that was hit print screen with the window of the table opened and then paste it to paint save it there and then put it on photo bucket and paste the img code on here. thanks for the help
Chris

 

SWEET!! I've been trying to figure out how to do that for quite a long time, thanks. Here's what my tables look like, albeit i'm still tuning it myself. I can"t believe how much fuel I STILL have to pull out. It's running quite rich,lol

 

are these any better or not?

 

well to be honest the best question for me to ask is how does it run? Do you have a wideband O2? Your VE tables appear ok to me but every engine is different so VE is dependent upon what the engine it self wants. I can tell you run in closed loop due to how smooth your tables are, I myself run in open loop only but I might switch to closed loop to learn how to tune better.

 

it runs pretty good on the first set of tables it kinda runs rich i most say im kinda cheating im tuning with an ebl. im going to hook my wbo2 to it sometime this week i hope. im just new to this and dont know what to really look for i just take what the ebl gives me and smooth them out some in tuner pro

thanks for the help
Chris

 

you will LOVE the EBL with a wideband. Makes life ALOT easier.

 

glad to hear it are you using the ebl too?

 

These are not EBL maps, but this is what I ran on my TPI 350 Vortec in my G20 Van.





When I first started tweaking the VE tables, I started with STOCK AUJP 350 stuff. The ported vortecs, mild cam, and Tri-Y headers wanted MUCH more fuel from as little as 45-50 KPA map than the stock TPI. I could not believe how much more fuel I had to add in the 45-85 KPA map. The fuel changes in the 85-100 KPA MAP were suprisingly little under 5,200 rpm.

 

fast do you think my tables are ok or is there some place i should work on them?

 

Oh yeah,been using it for quite a while now. I recommend it to everyone.

 

so far i like it and rbobs customer service is really good

 

Yea I do think you need some tweaks. Notice how my tables are all smooth and flowing. The engine does not realistically do what your table does. That is a "brick wall". The fuel curves should be nice and smooth. In fact the VE tables should very closely mimick your TQ curve.

I have always had good luck modeling an engine on DD2000/2003 and shaping my 100 KPA values very near modeled VE and then working down to lesser KPA values a few % per 5 KPA. So at 100 kPA if it showed 95%, I would put in 95%, at 95 KPA, I might have 93%, at 90 KPA 90%, so on and so forth. Saved me MEGA time trying to figure out the fuel table. In fact it worked so well I tried it on my 5.7 Hemi Ram when I swapped the cam, using my SCT software. When I got to datalogging it, I was within a few percent across the entire board with one guess.

 

i will just keep doing ve learns then and see were that takes me? are the ve learns in the ebl pretty good?

 

The VE learns are very good, but they still need some hand smoothing in places where you are not hitting, otherwise some bizarre engine operarting condition might cause issues. AKA engine braking down a mountain in 2nd gear pulling a trailer, haha. But all jokes aside, they work well, but respond best to driving in many conditions over a good distance. Try to hit all the speed/load conditions. Lug the engine a little if possible, accelerate briskly at moderate RPM when possible, drive slowly, cruise, accelerate slowly, cruise at higher than normal rpm, decelerate at higher than normal rpm, just try to hit all the fuel tables. You might also increase the throttle postion for PE so that you can get more of the map.

 

ok then i will run one when i go to work tomorrow its 40 miles one way on the i state but it should be better then just around town

 

Especially if its under varied driving conditions. I would make two logs, one to work and one from work. Might do good to reflash the unit between.

 

However I would definately consider modeling your engine on DD2000 or preferably DD2003 if you have acess to it. I would then reshape your VE tables to the predicted VE/TQ curve. Its never done me wrong and is able to get you in the ball park much quicker.

This was just a complete guess tune on the Ram. At WOT the air/fuel ratio dips to 12.3:1 leaning slightly to 12.6:1 @ 5,000 and finally richening to about 12:1 at 6,500. The commanded air/fuel ratio is 12.5:1. Just goes to show how well it works for me. I think the very top-end difference is due to intake/exhuast restriction that is not accounted for in the program but present in the truck.

http://www.youtube.com/watch?v=tJ2I6GZFcho

 

Look at table #2 4000-5000 rpms 65-100 kpa. There is a significant drop in fuel table. May be difficult to data log in that area legally/safely in higher gears. You can pull the dips up with mouse and by placing curser on then it will identify rpm/map. Smoothen function helps too but manually will get you there faster.

Edit: corrected rpms/map

 

dont mean to ***** it up with a lot of pics but i just dont want to blow it up lol

fast i will try and get around dd and run my engine on there thanks for the help guys

thanks
Chris

 

If Robertfrank looks at the table posted by fast 355, he should see why he has to pull out so much full. Robert you are still on the lower table giving it 85% pulse. I'd anticipate you'll need to pull more out there as well.

I could see that up higher and under load, but not at that level on your chart

Note the smooth flow of Fast355 charts. They should not look hacked like a knife on a leather coat. Should be no gross changes from place to place, no sharp peaks and lost valleys. Looking like a mountain range is not a good thing. It looks scary to me.

That slash on the back side of Gumm's high table doesn't look healthy either. I wouldn't want my engine risking lean out at those loads and RPM's. Gentle curves, not cliffs.

My preemptive apologies if others more worldly than I see it differently. Please correct me if you see something wrong with my comments

 

my tables drop off like that cuz my pickup doesnt see over 4500 rpm so i dont change the tables over like 5000 rpm

 

Yea that was my thought, you are never going to see high rpms. Maybe makes no diff. I would still smoothen it out just for looks. There is a smoothning factor in EBL as well as TP. Doing VE Learns will sometimes shows a not so smooth table as you may not hit all the VE cells so a manual smoothening is needed posibly beyond what EBL does. No big worry as the 02 feedback puts motor at stoich redardless of table as long as you are within range of 115-160 BLM. Having a good table just reduces time the ECU needs to arrive at stoich and also benefits other calcs that VE table needs to be referenced to.

 

Lake, I'm still in the process of getting mine dialed in. I've found that my engine likes to run a tad on the rich side in open loop. I've tried to lean it out in some areas but it falls flat on it's face with anything over 14.0. At cruise it's sits at a good 14.7 but sometimes it dips down to 12.8 even in cruising. So I still need to get things adjusted,lol