CEL - P0171 / P0174 on '15 V8V
Registered User
Joined: Feb 2017
Posts: 107
From: New Hampshire, USA
Rep Power: 16
Awesome solution and great use of a 3D printer! How deep did you make the honeycomb?
Glad to hear your initial report indicates a positive fix. After a few drives my LTFT’s dropped completely down and ranging between 0-3%. Anything between +/-10% is within normal operating conditions.
-Dan
Glad to hear your initial report indicates a positive fix. After a few drives my LTFT’s dropped completely down and ranging between 0-3%. Anything between +/-10% is within normal operating conditions.
-Dan
Registered User
Joined: Apr 2018
Posts: 46
Rep Power: 10
Awesome solution and great use of a 3D printer! How deep did you make the honeycomb?
Glad to hear your initial report indicates a positive fix. After a few drives my LTFT’s dropped completely down and ranging between 0-3%. Anything between +/-10% is within normal operating conditions.
-Dan
Glad to hear your initial report indicates a positive fix. After a few drives my LTFT’s dropped completely down and ranging between 0-3%. Anything between +/-10% is within normal operating conditions.
-Dan
Last edited by AMR248; Jul 12, 2020 at 06:41 AM.
Registered User
Joined: Apr 2018
Posts: 46
Rep Power: 10
a friend, who is an engineer, built them for me! We have to work on fitment and long term results before we can make them available! I“ll let you know!
Last edited by AMR248; Jul 12, 2020 at 02:27 PM.
Thus far we have only seen a similar issue on a V12VS (Bosch ECUs) car. A couple of people have previously reported stuck rich/lean codes but these were resolved by locating air ingress points post-MAF.
An insert to create more laminar flow is something we started looking at. We recently acquired a 3d Printer, so we may actually be able to start 3D printing the entire bracket and include a screen like this as part of the assembly.
An insert to create more laminar flow is something we started looking at. We recently acquired a 3d Printer, so we may actually be able to start 3D printing the entire bracket and include a screen like this as part of the assembly.
__________________
Stuart Dickinson
Managing Director
Velocity Automotive Performance Limited
206 Maple Avenue
Oliver, BC
Canada V2A 4W6
Office: (1)250-485-5126
www.velocityap.com
Stuart Dickinson
Managing Director
Velocity Automotive Performance Limited
206 Maple Avenue
Oliver, BC
Canada V2A 4W6
Office: (1)250-485-5126
www.velocityap.com
Registered User
Joined: Apr 2018
Posts: 46
Rep Power: 10
Thus far we have only seen a similar issue on a V12VS (Bosch ECUs) car. A couple of people have previously reported stuck rich/lean codes but these were resolved by locating air ingress points post-MAF.
An insert to create more laminar flow is something we started looking at. We recently acquired a 3d Printer, so we may actually be able to start 3D printing the entire bracket and include a screen like this as part of the assembly.
An insert to create more laminar flow is something we started looking at. We recently acquired a 3d Printer, so we may actually be able to start 3D printing the entire bracket and include a screen like this as part of the assembly.
Registered User
Joined: Apr 2018
Posts: 46
Rep Power: 10
I recently installed a set of Velocity AP headers, x-pipe, and back box, airbox delete and finally, 100 cell cats. On the first shakedown drive I had no CEL or codes, but after a couple days, and only when I was on the freeway and 'cruising' at 65-70 I saw a couple instances of CEL and codes. The first time there were quite a few - P0130, P0150, P0171, P0174, P1000, and on inspection I found a hose that's tied to gasoline vapor recovery (I think that's what it is...) in the passenger wheel well had the cap come loose. After replacing it I had another instance, again, cruising home on the freeway, showing P0171 and P0174, both which would indicate a lean condition.
After resetting I had a few weeks with no further faults.
Yesterday I drove the car from Denver up into the nearby mountains to see some friends and on returning had a long downhill run on I70 - so basically foot of the gas and going down the mountain at 70ish for a few miles when I had another instance of P0171 and P0174. Has anyone else had issues with this code and conditions before?
Any insight is appreciated.
Thanks!
After resetting I had a few weeks with no further faults.
Yesterday I drove the car from Denver up into the nearby mountains to see some friends and on returning had a long downhill run on I70 - so basically foot of the gas and going down the mountain at 70ish for a few miles when I had another instance of P0171 and P0174. Has anyone else had issues with this code and conditions before?
Any insight is appreciated.
Thanks!
Registered User
Joined: Nov 2010
Posts: 107
From: California
Rep Power: 21
@Stuart@VelocityAP Let me know if you get the 3D printed air straighteners for the GT4 Airbox Delete kit. I have the kit and occasional P0171 P0174 faults.
Ric Vieler :-)
Ric Vieler :-)
@Stuart@VelocityAP Let me know if you get the 3D printed air straighteners for the GT4 Airbox Delete kit. I have the kit and occasional P0171 P0174 faults.
Ric Vieler :-)
Ric Vieler :-)
__________________
Stuart Dickinson
Managing Director
Velocity Automotive Performance Limited
206 Maple Avenue
Oliver, BC
Canada V2A 4W6
Office: (1)250-485-5126
www.velocityap.com
Stuart Dickinson
Managing Director
Velocity Automotive Performance Limited
206 Maple Avenue
Oliver, BC
Canada V2A 4W6
Office: (1)250-485-5126
www.velocityap.com
Thread
Thread Starter
Forum
Replies
Last Post
