What comes next?
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11 Second Club
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Joined: Nov 2004
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From: Michigan (Macomb or Lansing)
What comes next? Ok so I did a bunch of playing with my tune and logging. I used the wideband method. I got my VE table pretty close, i am not getting much a/f error but my ltfts are all negative, range up to like -14 average. Since i did the a/f method, can i just ignore the ltfts? Or do you have suggestions?
I set my PE table up. High 12s and it seems to work well. The a/f that at WOT.
My car finds idle at 850 more often than not but occasionally, it will rev too low and i have to save it, also i have to give it some gas at cold start.
What should i do?
Also, I am getting zero KR, so, should i increase timing across the board until i get kr and then back off?
What else should I look into?
I set my PE table up. High 12s and it seems to work well. The a/f that at WOT.
My car finds idle at 850 more often than not but occasionally, it will rev too low and i have to save it, also i have to give it some gas at cold start.
What should i do?
Also, I am getting zero KR, so, should i increase timing across the board until i get kr and then back off?
What else should I look into?
if you are running the stock timing table (you have not gotten the car tuned before) then bump timing at WOT in the upper areas like 4200rpm and up to say 25 from the original 19 i believe..or take baby steps a go to like 22
if you did the VE tuning what you should be able to do is set your PE all to 1 value, like you did. watch your fuel trims and create a MAP in whichever tuning software you are using and long the fuel trims based on different MAP and rpm values just like the VE table... copy and paste results...smooth them out and go again. that will get rid of your weird fuel trims.
for weird idle and cold starts... try using the base spark in neutral and in park tables and set them all to 23 from i think 800(could be less) to 1krpm... you must set ALL the tables to this to get it to run 23 degrees (you could also try less, just raise it from its stock value) and you must also change your high octane table i think with those tables.
if you did the VE tuning what you should be able to do is set your PE all to 1 value, like you did. watch your fuel trims and create a MAP in whichever tuning software you are using and long the fuel trims based on different MAP and rpm values just like the VE table... copy and paste results...smooth them out and go again. that will get rid of your weird fuel trims.
for weird idle and cold starts... try using the base spark in neutral and in park tables and set them all to 23 from i think 800(could be less) to 1krpm... you must set ALL the tables to this to get it to run 23 degrees (you could also try less, just raise it from its stock value) and you must also change your high octane table i think with those tables.
Thread Starter
11 Second Club
iTrader: (14)
Joined: Nov 2004
Posts: 1,653
Likes: 1
From: Michigan (Macomb or Lansing)
Did i do the VE table wrong (hptuners btw)? I copied the A/F ratio error histogram then i did paste special, multiply by percent in the VE table.
So you are saying, now after I did that, i can special paste-> add the LTFT table on top of the VE table and i should be good?
So you are saying, now after I did that, i can special paste-> add the LTFT table on top of the VE table and i should be good?
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Thread Starter
11 Second Club
iTrader: (14)
Joined: Nov 2004
Posts: 1,653
Likes: 1
From: Michigan (Macomb or Lansing)
I am at school now so i don't have a chance to tune the car but what ive found out that i wasn't truly in open loop because i was getting ltfts in the first place. You are correct, if i was tuning correctly and i got those -15 id be off by that much. I started my tune over and now i think i am doing it right.
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