Harmon Rabb Posted March 18, 2013 Report Share Posted March 18, 2013 I flashed my '13 with the Livernois tune this afternoon. Made a large difference in power, very nice. On my first run, it spun the tires off the line, then chirped on the 1-2 shift. Feels like it's a good bit quicker now. Anyway, upon data logging my car using Torque, I've found something odd. I'm logging both Commanded A/F ratio and Actual A/F ratio. If I punch it off the line, both go to 11:0 and stay there through multiple gears, as long as I stay in the throttle. If I punch it while going over 40mph or so, both go to almost 15:0 and stay there through multiple gears, as long as I stay in the throttle. This is very consistent. The car is not bucking or acting strange, at the times where it goes to 15:0, and it feels exactly the same as when it's at 11:0. Can anyone else with Torque and a Livernois tuned 2013 go try this out and report back if the same happens to them? I'm wondering if Torque is fritzing out, or if there's actually a problem with the tune (which would seem weird, I know Livernois is a top notch tuner). So, please, try data logging your A/F ratio punching it off the line, and then rolling and punching it at speed, say 40mph or 50mph, and report back. Quote Link to comment Share on other sites More sharing options...
Crash712us Posted March 19, 2013 Report Share Posted March 19, 2013 Remember a lower number means richer. Which you would expect to see at WOT. Quote Link to comment Share on other sites More sharing options...
Harmon Rabb Posted March 19, 2013 Author Report Share Posted March 19, 2013 Remember a lower number means richer. Which you would expect to see at WOT. All numbers I posted were at WOT. I'm not looking at part throttle numbers. Quote Link to comment Share on other sites More sharing options...
bnoon Posted March 21, 2013 Report Share Posted March 21, 2013 Wow, that would be hella lean if it's 15:1. Even with direct injection the leanest I've seen stay together is between 12-13:1. Good luck! Quote Link to comment Share on other sites More sharing options...
EcoBoostSHO Posted March 21, 2013 Report Share Posted March 21, 2013 I did this on my 2011 (I know you need a 2013 but thought it would be an interesting data point) and it definitely did NOT go to 15:1...it stays pretty consistent around 11:1 and that was using Torque. I would definitely get that checked out. Quote Link to comment Share on other sites More sharing options...
Harmon Rabb Posted March 21, 2013 Author Report Share Posted March 21, 2013 Post your logs from the runs' date=' Torque can actually save the logs and people can look at them for you.[/quote'] Ok I'll take some. Carefully. Lol. What parameters do you want me to log? I was looking at AFR actual and AFR commanded. So strange that when you hit it off the line it stays right at 11:1, but when you hit it from a move, stays at ~ 14.8:1. After I take that log, think I'm going to flash it back to stock and log it stock. If it does this stock as well, I'm going to be pretty confused. Quote Link to comment Share on other sites More sharing options...
EcoBoostSHO Posted March 21, 2013 Report Share Posted March 21, 2013 Can you get short and long term fuel trims? I don't remember if I could log that in torque or not. It can...it's got "bank 1" and "bank 2"... Quote Link to comment Share on other sites More sharing options...
83racecrew Posted March 21, 2013 Report Share Posted March 21, 2013 I don't have the tune, but I will try to get you a data point with my stock '13. Quote Link to comment Share on other sites More sharing options...
Harmon Rabb Posted March 21, 2013 Author Report Share Posted March 21, 2013 That would be helpful. Got the log, will upload, am sitting in the car flashing it back to stock now then logging it stock. Quote Link to comment Share on other sites More sharing options...
Harmon Rabb Posted March 21, 2013 Author Report Share Posted March 21, 2013 Update: with the stock tune, this problem does NOT happen, and it is always 12:1 or under at WOT, no matter at what speed I punch it. Am going to leave the stock tune for now until I can get this figured out and fixed. I'm disappointed Quote Link to comment Share on other sites More sharing options...
Harmon Rabb Posted March 21, 2013 Author Report Share Posted March 21, 2013 Ok I don't understand this log. I set the display showing the actual and commanded afr's, as well as the LT and ST fuel trims for both banks, turned on logging, made some runs, turned off logging. But the log has time, and then 4 columns of data, wherein each data item in the column is identical. huh? Quote Link to comment Share on other sites More sharing options...
Harmon Rabb Posted March 21, 2013 Author Report Share Posted March 21, 2013 oh hell. that's what's wrong. i didn't have it set up to log anything. i thought it would log what was on the display. ugh. now that i know this problem isn't there with the stock tune, i'm afraid to go back to the livernois tune to get a log. double UGH. Quote Link to comment Share on other sites More sharing options...
Harmon Rabb Posted March 22, 2013 Author Report Share Posted March 22, 2013 Update: I spoke to livernois today. Class act. They are going to load my exact tune in their car, try to replicate what I did, and get back to me. They did tell me, and I believe, that if I was actually running that lean, the car wouldn't have felt good, and would have just stumbled and felt really slow. With their tune, the car was ripping, felt great. Felt like she had an easy high 12 in her. So, we shall see. I'd like to get to the bottom of this, because the stock tune stinks in comparison. Man. Car is so sluggish. Lol Quote Link to comment Share on other sites More sharing options...
Harmon Rabb Posted March 22, 2013 Author Report Share Posted March 22, 2013 Update: LMS had me update my tuner, reload the tune, and try again. The issue is now gone. At WOT now, no matter what speed I'm at when I hit it, the AFR goes to 11:1. So I am very happy that they listened to me, took my concern seriously, and worked with me to fix the issue. Great dudes. Quote Link to comment Share on other sites More sharing options...
Jmr061 Posted March 27, 2013 Report Share Posted March 27, 2013 Probably explains the email I got on 3/22 stating there is an update tune to load. Jason Quote Link to comment Share on other sites More sharing options...
Harmon Rabb Posted March 28, 2013 Author Report Share Posted March 28, 2013 Probably explains the email I got on 3/22 stating there is an update tune to load. Jason No doubt. But hey they fixed whatever the real issue was, as soon as they knew of it. Not much room for us to complain. Nobody's car blew up, so clearly my data log didn't tell the full picture. Quote Link to comment Share on other sites More sharing options...
Jmr061 Posted March 31, 2013 Report Share Posted March 31, 2013 Wasn't complaining, just stating that is explains the update more than likely. Was just wondering what changed and this probably explains it. Their customer service is top notch and I don't think anyone can find something to complain about with their service. Def. top notch! No doubt. But hey they fixed whatever the real issue was' date=' as soon as they knew of it. Not much room for us to complain. Nobody's car blew up, so clearly my data log didn't tell the full picture.[/quote'] Quote Link to comment Share on other sites More sharing options...
fueld13 Posted August 9, 2013 Report Share Posted August 9, 2013 Did anyone ever resolve this or talk with Livernois about this possible A/F condition...Or did everyone just shrug their shoulders and hope things aren't running lean? I'm looking to get a tune after a couple small warranty claims I need to get taken care of and this sudden unresolved thread seams a little ominous! :| It seams like Livernois doesn't participate in the threads anymore either eh? What happened? Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.