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Mernardi Mernardi is offline
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Default New N55 Pure Stage 2 - No Boost - 08-09-2016, 07:27 PM

Babied the car for the first 100 miles on my new turbo. My tech also re-installed my JB4 with the new turbo. I adjusted all user settings and flashed the large turbo pump back end. Just went to finally give the car some gas and I get no boost. The car was pressure tested and smoke tested so it's not a crazy leak anywhere.

The only code being thrown is 3BCF. I'm not sure what this code is based off of the fault code list.

I attached a short log, don't really want to drive the car as it is. You can see boost is hitting only a max of 3 psi.

Anyone have any idea why boost will not come even close to target? My shop is closed and I am furious right now lol.
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File Type: csv 2016-08-09 20_50_17.csv (9.8 KB, 119 views)
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JamCan335i JamCan335i is offline
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Default 08-09-2016, 07:52 PM

I believe when boost is far off target and PWM is maxed (or near maxed), that chances are there is a boost leak—it would seem yours is quite large at that.


2011 BMW 135i
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Steve @ BMS/Fuel-It! Steve @ BMS/Fuel-It! is offline
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Default 08-09-2016, 09:00 PM

+1



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Video of our Stage 2 LPFP upgrade installation.

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Mernardi Mernardi is offline
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Default 08-10-2016, 06:32 AM

Hmm. The car was pressure tested and held 18 lbs without a problem. It was also smoke tested just to make sure.

I guess the fun begins in trying to track this down lol.
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keyap keyap is offline
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Default 08-10-2016, 12:53 PM

Quote:
The car was pressure tested and held 18 lbs without a problem.
That would suggest something's happened post install. There's no way looking at that log that you would hold 18psi without a problem


UK 2011 - E82- 135i - N55 - DCT

JB4 | BMS OCC | N20 TMap | Fuel-It! PI | AIC6 PI Controller | Fuel-It! Fuel Lines | Fuel-It! Stage 2 LPFP | Continental In-line E Sensor | ER Charge Pipe | Pure Stage 2 Turbo | Pure High Flow Inlet | GFB DV+ | Richter C'less D/Pipe | Berk Race Full Exhaust | MFactory Pro Helical LSD (75% Bias Ratio) | eDiff Disabled Via Coding | MFactory Solid Diff Bushes | Diff Lockdown Bracket | Custom 98G0B BEF | NGK 5992s | KW3 Coilovers

Last edited by keyap; 08-10-2016 at 03:32 PM..
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Newguy123 Newguy123 is offline
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Default 08-10-2016, 02:22 PM

Quote:
Originally Posted by keyap
That would suggest something's happened post install. There's now way looking at that log that you would hold 18psi without a problem
+100.....


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Mernardi Mernardi is offline
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Default 08-10-2016, 03:39 PM

Thanks for the replies. Haven't had time to update today. Issue resolved. Vacuum line somehow came off of the wastegate. Glad it was something simple
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