Cannot believe I am running with no Boost for 8 months

kahuna001 · 05-19-2018, 05:09 PM

Bought a 2009 135i last year and have no clue what power 300 HP meant. The car was running fine. Bought a COBB and flash it to stage 1 and cannot boost more than 7lb. Getting the P30FF but the car still runs. Shut off engine and the code cleared. For day to day driving it was fine. As soon as you step on the gas and pull ..the check engine light comes on. Flash it back to stage 0 and it was fine. No check engine light.
Came to term that somewhere somehow something must be wrong. Finally .. cannot take it anymore. Ordered some 3.5mm silicone vacuum hose and 2 boost solenoids.

Changed most of the vacuum hose on the left side of the car. When I took the right side ( air box ) out. Found the culprit. A broken hose and was disconnected from the intake. Wow. Replaced that and went for a quick drive. My GOD.. a Beast now. Boosting to more than 15lbs now.

Long story short... check / change your vacuum hose.

N55darksoul · 05-19-2018, 05:13 PM

That is scary I better check everything...power left on the table is not good...

Dat Aus · 05-20-2018, 12:10 AM

Was it the hose that connects to the intake manifold just behind the throttle body?

kahuna001 · 05-20-2018, 04:35 AM

Quote:

Originally Posted by Dat Aus

Was it the hose that connects to the intake manifold just behind the throttle body?

Yes.

YearOneOne · 05-20-2018, 05:30 PM

Make them all aluminum that should help lol

kahuna001 · 05-28-2018, 07:14 PM

I upgraded the air filter too after I did all the vacuum hoses.

05-19-2018, 05:09 PM	#1
kahuna001 Enlisted Member 18 Rep 41 Posts Drives: 2005 Elise /2009 135i Join Date: Mar 2017 Location: UNION iTrader: (0)	Cannot believe I am running with no Boost for 8 months Bought a 2009 135i last year and have no clue what power 300 HP meant. The car was running fine. Bought a COBB and flash it to stage 1 and cannot boost more than 7lb. Getting the P30FF but the car still runs. Shut off engine and the code cleared. For day to day driving it was fine. As soon as you step on the gas and pull ..the check engine light comes on. Flash it back to stage 0 and it was fine. No check engine light. Came to term that somewhere somehow something must be wrong. Finally .. cannot take it anymore. Ordered some 3.5mm silicone vacuum hose and 2 boost solenoids. Changed most of the vacuum hose on the left side of the car. When I took the right side ( air box ) out. Found the culprit. A broken hose and was disconnected from the intake. Wow. Replaced that and went for a quick drive. My GOD.. a Beast now. Boosting to more than 15lbs now. Long story short... check / change your vacuum hose. Attached Images
	Appreciate 2 Dackelone10525.50 Cavpilot2k1023.00 Tweet Quote

05-19-2018, 05:13 PM	#2
N55darksoul Private First Class 78 Rep 173 Posts Drives: 2012 - 135i Join Date: Apr 2018 Location: Mars iTrader: (0)	That is scary I better check everything...power left on the table is not good...
	Appreciate 0 Quote

05-20-2018, 12:10 AM	#3
Dat Aus First Lieutenant 117 Rep 376 Posts Drives: '08 135i Join Date: May 2016 Location: Adelaide iTrader: (0)	Was it the hose that connects to the intake manifold just behind the throttle body?
	Appreciate 0 Quote

05-20-2018, 05:30 PM	#5
YearOneOne Captain 361 Rep 727 Posts Drives: 13 135i mineral grey Join Date: Jun 2016 Location: Maryland iTrader: (1)	Make them all aluminum that should help lol
	Appreciate 0 Quote

05-28-2018, 07:14 PM	#6
kahuna001 Enlisted Member 18 Rep 41 Posts Drives: 2005 Elise /2009 135i Join Date: Mar 2017 Location: UNION iTrader: (0)	I upgraded the air filter too after I did all the vacuum hoses. Attached Images
	Appreciate 0 Quote

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search