- COS#5 valet switch NO2??
- Changing from COS3 to COS5
- Cant load COS
- COS3 pin 56 question
- E40 2 Bar COS scanner to tune PID link issue
- E40 2 bar question
- E40, 2005, 427 Corvette, running E85 and updated to the custom OS
- Help with tune - 2 bar COS3 OLSD
- help with tune co3 50lb whipple
- flashing cel after cos5
- My pcm won't flash a cos.
- 3bar COS only logging to 255kpa
- Help, had a COS made for my car and won't idle.
- Throttle Cracker Active with Clutch In Using COS5?
- Co3 stft with command afr 12.00?
- A0016 Pulling 1.5* - 2.0* more than Commanded.
- Jenvey ITBs - COS 5 on an LS1
- Help me select a COS
- LS1 Nitrous Trigger using OEM PCM
- Accuracy and speed of C0S5 nitrous Adders
- C2909, a rather obscure parameter but cost us 2 days in COS setup...........
- Can HPTuners alter a PCM with an EFLive COS?
- AFR different on 2 widebands
- COS5, how do I setup a 2 step?
- Can I create my own custom OS? I wnat to change the OS number is posible
- COS help
- lost my license
- Vallet Mode/2 Step PCM pin COS5
- What is the best way to achieve COS5?
- COS5 and autoVE
- Custom Operating System Questions - Compatibility, viewing parameters
- LS1B Custom OS
- E38 COS not pulling timing
- No throttle after os swap
- COS5 Questions
- COS Tutorial question...
- Can someone tell me what I'm missing to get it to start?
- custom operating system files
- Boosted truck running too rich
- COS #3 for 2004 silverado bricks pcm
- e40 2bar upgrade
- COS 3 Lean Cruise
- Cos3 01270003 to Cos 5 02020005. Wont start now
- STFT and SOL
- custom e38 os
- newbie tune
- 2 step possible blown motor 😡
- COS for E67
- Truck won't start with cos3. Runs fine with regular file. 12587603/04073003
- Correct way to upgrade from COS 3 to COS 5?
- COS5 egr "not supported"
- Need a favor os 12212156 to cos5
- Supercharged 03 Silverado 5.3L
- cos3-b3618/b3647
- Holden vz ls1 cos
- E40 cos
- how to update the VE map to cutom 2-3 bar table
- High spark and knock after COS3 install
- segment swap in COS5
- Went to a 2 bar, now the trans line pressure is maxxed out
- converting cos5 .tun to .ctz
- 3Bar for 03 Suburban file, MAP scanner values are stuck at 105 kpa
- Cruise control DBW 03190003 OS
- Which OS for my application? LS1B procharged...
- Do I have to have a commercial license to upgrade OS?
- LS1b semi-closed loop operation question (B3647)
- COS5 N2O Timing Table Activation Limits
- 2005 Silverado Installing ethanol content sensor
- Upgrading to COS E40 ECM
- Since GM tuning is ending...
- 2003 LS1B 0411 COS3 loss of Timing when under boost
- Os 04073005
- Need Help with Excessive Timing Retard in Boost - COS3
- complete noob needs help opening a .tun file
- complete noob needs help opening a .tun file
- COS question for LS1B
- Questions AutoVE Tuning my first turboed engine custom os #3 LS1B
- Looking for COS and starter tune for Gen1, '411, SD, cable throttle
- HELP! FEQ_AES_DMA is adding fuel?
- Turbo ls breakup/flutter/ bouncing boost gauge
- P59 COS3 04073003 flex fuel issues
- LS1B 1bar SD COS
- cos5 semi-open e85