View Single Post
Old 05-11-2017, 09:53 AM   #119
Darrel Goheen
Member
 
Darrel Goheen's Avatar
 
Join Date: Jan 2011
Location: Hays, KS
Posts: 379
Likes: 226
Liked 70 Times in 31 Posts
Default Re: Fuel injection? Open or Closed loop?

Quote:
Originally Posted by Ed Wright View Post
Me too. Once I have run it, and got my A/F right on the row for that Baro, next time I run there (Great Bend, KS, Noble, don't use the same row in my VE table as Ennis, Houston, etc. Don't have to touch it. I have just about quit logging every run. Never have to touch it anymore.
In low gear, Closed Loop doesn't make corrections fast enough. If off at (for instance)7000, the ordectuon would end up at 7500, when it's referencing the 7500 cel, which needed no correction. I ended up trying to set the delay so corrections would not start until 2nd gear. I got it so Closed Loop was not making corrections in the upper gears anyway. I just put it back into Open Loop. With the IAT sensor, it's always dead nuts. The car repeats really well. Wish the driver did.
I'm getting very little correction at WOT. I've tried shutting off closed loop but it barely runs in the pits then so I have to turn it back on. I just need to get that area tuned in OL. So if you go to say Denver would you turn CL back on for a couple passes or just select the whole table and take a percentage of fuel out? Do you save a tune for every track? In CL I think my launch AFR is way messed up because of 2 step. As soon as I launch it adds quite a bit of fuel. Here's my thought at this point and please correct me if I'm wrong. Footbrake a couple passes to get launch area AFR close, turn off CL and get pit area tuned and then slowly adjust AFR according to data log? Racing gets critical now starting with Topeka Nationals.
__________________
Darrel Goheen 785-623-7021
Stock Eliminator 585 94 Camaro Z/28 LT1/ET 585 67 Chevelle 427
Tehnician for JustAnswer.com

Last edited by Darrel Goheen; 05-11-2017 at 09:57 AM.
Darrel Goheen is offline   Reply With Quote