HELP - Airflow
Thread Starter
Senior Member
Joined: Aug 2008
Posts: 272
Likes: 1
From: South Africa
2008 C63 AMG
HELP - Airflow
Hi guys
I need some help / advice with a few problems I am currently experiencing.
Firstly my car is 08 with PP and has the following mods.
Header, exhaust (decat), Evosport pulley, Software & Carbonio airboxes
Had new software loaded on the car 2 months ago and was very impressed.
In the last 2 weeks my airflow (MAF) has gone down from a peak of 310/315 to 285g/s. This has resulted in a drop of about 30 wkw on the dyno.
When we plugged the car into X-Entry diagnostics and measured airflow we saw that the right hand sensor was reading 1kg less air per minute at idle. Left bank 7.9 and right bank 6.9.
We assumed that on of the resonators on the exhaust was blocked and thus had the exhaust redone with a 3" pipe from headers to back box with x in the middle.
This did no solve the problem, car is still flowing less air.
I also have a problem with the secondary right hand side lambda. Keeps on throwing a error. This problem has been there for a couple of months. Not sure if the airflow is causing the error.
What are the possible problems that could be causing my drop in airflow?
Any advice / help would be appreciated.
Thanks
I need some help / advice with a few problems I am currently experiencing.
Firstly my car is 08 with PP and has the following mods.
Header, exhaust (decat), Evosport pulley, Software & Carbonio airboxes
Had new software loaded on the car 2 months ago and was very impressed.
In the last 2 weeks my airflow (MAF) has gone down from a peak of 310/315 to 285g/s. This has resulted in a drop of about 30 wkw on the dyno.
When we plugged the car into X-Entry diagnostics and measured airflow we saw that the right hand sensor was reading 1kg less air per minute at idle. Left bank 7.9 and right bank 6.9.
We assumed that on of the resonators on the exhaust was blocked and thus had the exhaust redone with a 3" pipe from headers to back box with x in the middle.
This did no solve the problem, car is still flowing less air.
I also have a problem with the secondary right hand side lambda. Keeps on throwing a error. This problem has been there for a couple of months. Not sure if the airflow is causing the error.
What are the possible problems that could be causing my drop in airflow?
Any advice / help would be appreciated.
Thanks
Super Member
Joined: Nov 2008
Posts: 640
Likes: 1
none
Hi guys
I need some help / advice with a few problems I am currently experiencing.
Firstly my car is 08 with PP and has the following mods.
Header, exhaust (decat), Evosport pulley, Software & Carbonio airboxes
Had new software loaded on the car 2 months ago and was very impressed.
In the last 2 weeks my airflow (MAF) has gone down from a peak of 310/315 to 285g/s. This has resulted in a drop of about 30 wkw on the dyno.
When we plugged the car into X-Entry diagnostics and measured airflow we saw that the right hand sensor was reading 1kg less air per minute at idle. Left bank 7.9 and right bank 6.9.
We assumed that on of the resonators on the exhaust was blocked (Say what?!) and thus had the exhaust redone with a 3" pipe from headers to back box with x in the middle. (Seriously?! WTF!?)
This did no solve the problem, car is still flowing less air.
I also have a problem with the secondary right hand side lambda. Keeps on throwing a error. This problem has been there for a couple of months. Not sure if the airflow is causing the error.
What are the possible problems that could be causing my drop in airflow?
Any advice / help would be appreciated.
Thanks
I need some help / advice with a few problems I am currently experiencing.
Firstly my car is 08 with PP and has the following mods.
Header, exhaust (decat), Evosport pulley, Software & Carbonio airboxes
Had new software loaded on the car 2 months ago and was very impressed.
In the last 2 weeks my airflow (MAF) has gone down from a peak of 310/315 to 285g/s. This has resulted in a drop of about 30 wkw on the dyno.
When we plugged the car into X-Entry diagnostics and measured airflow we saw that the right hand sensor was reading 1kg less air per minute at idle. Left bank 7.9 and right bank 6.9.
We assumed that on of the resonators on the exhaust was blocked (Say what?!) and thus had the exhaust redone with a 3" pipe from headers to back box with x in the middle. (Seriously?! WTF!?)
This did no solve the problem, car is still flowing less air.
I also have a problem with the secondary right hand side lambda. Keeps on throwing a error. This problem has been there for a couple of months. Not sure if the airflow is causing the error.
What are the possible problems that could be causing my drop in airflow?
Any advice / help would be appreciated.
Thanks
Uhmmmm... Did you try simply cleaning the filters or replacing the 02 sensor first?
Might have been a slightly less expensive and time consuming route than a new exhaust... Just saying.
Also, the car will always throw a CEL without cats unless you deactivate the rear 02s in the software.
Hope that helps.
Josh
Last edited by C63 Guy; Feb 11, 2010 at 04:01 AM.
Thread Starter
Senior Member
Joined: Aug 2008
Posts: 272
Likes: 1
From: South Africa
2008 C63 AMG
