boost fade/spike on a C32?
11-24-2015, 08:48 AM
#1
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C32 AMG, E55 AMG, CLS550, G55 AMG, C43 AMG
boost fade/spike on a C32?
hello people,
I got my friend to hook up a boost gauge for me and I'm not sure if I'm having problems with my SC or with boost leak. When I hit the throttle, I will get a boost spike to 14psi for about a second, then it will drop to 12psi then 10psi, then slowly rise back up to 14-15psi. Is this normal? I thought a S/C's boost curve was linear. It does this consistently in every gear.
thanks,
-JW
I got my friend to hook up a boost gauge for me and I'm not sure if I'm having problems with my SC or with boost leak. When I hit the throttle, I will get a boost spike to 14psi for about a second, then it will drop to 12psi then 10psi, then slowly rise back up to 14-15psi. Is this normal? I thought a S/C's boost curve was linear. It does this consistently in every gear.
thanks,
-JW
11-26-2015, 07:49 AM
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It doesn't seem like a boost leak as I always reach max boost at higher RPM's. I just get what I can best describe as a boost spike, a dip, then it rises normally again and stays at max boost. I just want to know why I'm getting a boost curve like a "U".
11-26-2015, 08:29 AM
#6
Is ur gage leaking?
My first gear is 16.73
Second heat 17.56
3 gear 18.67
Those are in the upper rpm
With 65sc needs dcai tune and exchanger
U can check what ur map is doing to figure out boost as well, I think between 230-245
My first gear is 16.73
Second heat 17.56
3 gear 18.67
Those are in the upper rpm
With 65sc needs dcai tune and exchanger
U can check what ur map is doing to figure out boost as well, I think between 230-245
Last edited by Morphh; 11-26-2015 at 08:33 AM.
11-26-2015, 09:02 AM
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2002 C32 AMG, 2013 GLK 350/4, 2015 E63S AMG Wagon
Here is one of my Boost graphs for your reference.
Make sure your ZT unit is properly grounded. Also, if you can log MAP signal from OBD2 and compare it to your ZT readings, that would tell you if your ZT is connected correctly. It will obviously not compare exactly since OBD2 takes fewer reading per second but you are looking for the kind of spikes your are describing.
Make sure your ZT unit is properly grounded. Also, if you can log MAP signal from OBD2 and compare it to your ZT readings, that would tell you if your ZT is connected correctly. It will obviously not compare exactly since OBD2 takes fewer reading per second but you are looking for the kind of spikes your are describing.
