I have also found a new issue i ran into yesterday. I have been upping the VTT airmass slowly to get the car to launch hard without pulling back throttle. Well my logged max torque value falls off to...
Type: Posts; User: ATrim
I have also found a new issue i ran into yesterday. I have been upping the VTT airmass slowly to get the car to launch hard without pulling back throttle. Well my logged max torque value falls off to...
I have the MPVI1 pro that i have my LC2 wired to for logging. I have been working on tuning this car for a long time learning the ECU. I just recently found the limit of a stock framed turbo at the...
Yes, WOT and med/high baro tables are quite a bit different. If i change the high baro table on the WOT rows the cam angle being logged changes at WOT so its basing only off that table and not wot...
I have noticed on my logs under WOT im not seeing the WOT main cam timing table numbers, its only reading of the high or medium baro table. E39a ecu , i tried lowering max throttle rotation percent...
Little update since i couldn't stop until i figured this out. I ended up bumping up the peak torque, brake torque limit and over boost limit up more and straight out. I originally had it following...
Trying to figure out what creates the desired boost to fall off, i have most limiters set to not limit. I get Full throttle, very little KR. MAF and VVE tuned and VTT tuned in areas to keep max Tq...
When tuning VVE and disabling MAF to fail, why must the MAF PID be removed from logging? What happens if you tune with a WB and do AFR error but the maf channel is in the log?
LT1z, you know the parts on my car we email each other often. I still am fighting some KR issues and havent taken full advantage of the TB yet.
When i went to the 2.5l NA throttle body i used the max area value off the malibu and the car did not seem to make power when i changed this value, i did not mess with it much just went back to the...
I have been tuning my car some more and have just about all the Torque management turned off. If i turn off traction control and stabilitrac manually and i make a pull, if the car chirps the tires in...
Yep, i would believe you need to do a MAF calibration. I just got this code last week after installing an upgraded turbo and cold air intake. My fuel trims were way off.
I think i'm throwing in the towel on E85, i just can not get a/f or fuel trims stable. Getting random spikes, it goes from way lean off the chart, add 10% to maf calibration and its rich off the...
I guess where i'm confused on is that is a .25 difference from gas to alcohol PE, with being 68-70% ethanol i would have thought the commanded pe eq ratio would have been around 1.17-1.175 and not...
OK, here is where i am at. I disabled all modifiers i thought that could add to PE. used 1.25 in both gas and alcohol PE, logged a brake torque and checked commanded at idle compared to full throttle...
Appreciate all this help, i will go disable all the tables you mentioned to try to pinpoint what tables are being used in fueling on alcohol and let you know what i find out.
I set IVT gains to 1.00, didnt seem to change wot commanded a/f. If i disable closed loop my trims are way off even though it is reading the ethanol content correctly. Is it normal to have to...
I attached a log and config if you want to look. I checked the flex fuel dtc codes, didnt seem to change much. It does read and change stoich depending on alcohol content so I believe that is working...
Next day or two i will reflash and see how close it is to commanded a/f. I will also log to see what other tables its using to calculate a/f on alcohol because i know the 1.029 in PE is not only what...
One more thing, when i was logging the values i posted about up top, i had fuel trims disabled so car would be in open loop so i could see how far off the tune was on e85. Tune i posted i believe...
I have flex sensor active and set to sensor, but just checked and the dtc are set to no report. I attached the file as this is not a stock file. I have no cat on the car currently so I think I...
So i have been reading up and trying out different pid's. Converted my gas scale innovate wide band output to read lambda on the scanner, logging commanded eq ratio which appears to be lambda as...
I think part of my issue is the difference between reading on wideband and commanded a/f. Being that my stoich value table reads from 0-100% ethanol , and when using gas my wideband was converting to...
Just looked at it again, converted my wideband output to read e85 so i can see the a/f ratio error comparison to what the ecu is commanding. Now on gas i had maf calibration within 0-2% difference on...
Yes it changes stoich depending on ethanol content, at around 70% ethanol it is close to 10.7 stoich. 10.7/1.029 = 10.39 but it will command 9.32 under boost so it must be using another table to...
I have added a flex fuel sensor to my Cadillac ATS 2.0T and have been tuning with E85 (70% ethanol)and am not sure how the PE table works for the alcohol PE EQ ratio. When it is on gas it takes the...