Cobb AP Boost Lag?

Drizzen · 05-19-2014, 09:57 AM

Hello All,

I've recently installed a Cobb AP on my 2009 335xi 6MT. The only other modification to the car is a DCI.

I've noticed that with the stage 1 tune installed, whenever I go full throttle, the car will boost up to the stock boost (8 psi) and kind of hesitate for a second before increasing the boost to 15psi.

The car isn't throwing any codes and drives completely normal otherwise. It will do it in all gears as well.

Any idea what could cause this hesitation?

I have had all spark plugs and ignition coils changed within the last 5k miles, and even had my valves sand blasted along with new VANOS sensors installed.

Subaru335i · 05-19-2014, 11:17 AM

You have an N54 so maybe the N54 section would be better. Doesnt sound right to me though.

Johnny Boost · 05-19-2014, 03:32 PM

Quote:

Originally Posted by Subaru335i

You have an N54 so maybe the N54 section would be better. Doesnt sound right to me though.

+1 on asking N54 section. And they will ask for you to take logs.

Drizzen · 05-20-2014, 11:17 AM

I moved over to the N54 Section. Didn't mean to post in N55. Thank you for the help.

05-19-2014, 09:57 AM	#1
Drizzen Registered 1 Rep 4 Posts Drives: 2010 335xi Sedan Join Date: Jun 2012 Location: CT iTrader: (0)	Cobb AP Boost Lag? Hello All, I've recently installed a Cobb AP on my 2009 335xi 6MT. The only other modification to the car is a DCI. I've noticed that with the stage 1 tune installed, whenever I go full throttle, the car will boost up to the stock boost (8 psi) and kind of hesitate for a second before increasing the boost to 15psi. The car isn't throwing any codes and drives completely normal otherwise. It will do it in all gears as well. Any idea what could cause this hesitation? I have had all spark plugs and ignition coils changed within the last 5k miles, and even had my valves sand blasted along with new VANOS sensors installed. __________________ 2009 335XI Sedan. Cobb Stage 2 1994 Toyota Supra. 7175. E85
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05-19-2014, 11:17 AM	#2
Subaru335i Private First Class 1 Rep 175 Posts Drives: 2011 335i 6MT Join Date: Mar 2014 Location: Minneapolis iTrader: (0) Garage List 2007 Subaru WRX [0.00] 2011 335i [0.00]	You have an N54 so maybe the N54 section would be better. Doesnt sound right to me though.
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05-20-2014, 11:17 AM	#4
Drizzen Registered 1 Rep 4 Posts Drives: 2010 335xi Sedan Join Date: Jun 2012 Location: CT iTrader: (0)	I moved over to the N54 Section. Didn't mean to post in N55. Thank you for the help. __________________ 2009 335XI Sedan. Cobb Stage 2 1994 Toyota Supra. 7175. E85
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