Constant 30FF but lots of power?

montegokid94 · 07-11-2015, 07:22 PM

No matter what now I'll get a 30FF and a 2AAF codes within minutes of driving.

Boost leak test done and no leaks found. Everything looks good.

Not to mention in map 5 the car holds around 16.5-17 PSI on 93 with just bolt ons and stock IC.

Walnuts blasting was done. While power delivery improved and MPG improved I am still getting these codes. Sometimes idling in traffic I feel jolts in the car like almost someone tapped me. Spark plugs and coils are okay and injectors are fine and not leaking...

I honest think the fuel pump is to blame. I've been getting random fuel codes for almost a year now but never any long cranks. The 30FF I have no clue at this point I want to replace the boost solenoids....

924er · 07-11-2015, 07:58 PM

Boost solenoid

blackturbo · 07-12-2015, 08:30 PM

Try the solenoid

i recently had the code and vacuum lines were to blame but i was gonna try solenoids after if it didnt work

Mayuri Krab · 07-13-2015, 09:22 AM

vacumm line most likely, I had that issue and turned out one of the lines connected to the bottom of one of those vaccum bottles was frayed, replaced most of the lines with some generic 4mm vaccum hoses and no more 30FF codes since.

Jeff@TopGearSolutions · 07-13-2015, 10:07 AM

You can still hit boost target and still have a small leak. If it's not a physical leak in the system then its usually the boost solenoids.

007_e350 · 07-13-2015, 03:27 PM

does the boost build slow ? I think 30FF is triggered if actual boost does not meet targeted value in 3 secs... I have a slight leak in valve cover but still don't get 30FF, its gotta be something major or try removing the JB4 or current tune and check

montegokid94 · 07-14-2015, 04:34 PM

It hits boost pretty fast I need to do logs asap so you guys can see what's actually going on

07-11-2015, 07:22 PM	#1
montegokid94 Banned 38 Rep 263 Posts Drives: 4 wheels Join Date: Jun 2014 Location: Everywhere iTrader: (9)	No matter what now I'll get a 30FF and a 2AAF codes within minutes of driving. Boost leak test done and no leaks found. Everything looks good. Not to mention in map 5 the car holds around 16.5-17 PSI on 93 with just bolt ons and stock IC. Walnuts blasting was done. While power delivery improved and MPG improved I am still getting these codes. Sometimes idling in traffic I feel jolts in the car like almost someone tapped me. Spark plugs and coils are okay and injectors are fine and not leaking... I honest think the fuel pump is to blame. I've been getting random fuel codes for almost a year now but never any long cranks. The 30FF I have no clue at this point I want to replace the boost solenoids....
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07-11-2015, 07:58 PM	#2
924er Colonel 351 Rep 2,049 Posts Drives: e92 335i '10 Join Date: Feb 2014 Location: Socal iTrader: (0)	Boost solenoid __________________ '10 e92 N54 DCI intakes, ER chargepipe, TIAL BOV, VRSF 5in FMIC, BMS Downpipes COBB e30
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07-12-2015, 08:30 PM	#3
blackturbo Captain 59 Rep 645 Posts Drives: 335i Join Date: Jul 2013 Location: vancouver iTrader: (1)	Try the solenoid i recently had the code and vacuum lines were to blame but i was gonna try solenoids after if it didnt work
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07-13-2015, 09:22 AM	#4
Mayuri Krab The Cheap Arse Asian 48 Rep 585 Posts Drives: E90 335i & R33 Skyline GTS-T Join Date: Jun 2013 Location: Perth, Australia iTrader: (0)	vacumm line most likely, I had that issue and turned out one of the lines connected to the bottom of one of those vaccum bottles was frayed, replaced most of the lines with some generic 4mm vaccum hoses and no more 30FF codes since. __________________ 07 BMW E90 335i \|JB4 + MHD Backend Flash (Pump) \|AR Catless DPs\|ER CP + Forge DVs\|BMS DCIs + OCC\|RB PCV valve + cap\| 93 R33 Skyline GTS-T \|SAFC-II piggyback\|3" Turbo Back Exhaust + Highflow Cat\|FMIC\|Boost Tee\|Apexi POD\| Shitty Chinese spec tires = sideways action everywhere
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07-13-2015, 10:07 AM	#5
Jeff@TopGearSolutions 3474 Rep 79,211 Posts Drives: C6 Z06, 09 335i, 10 335xi Join Date: Dec 2008 Location: www.TopGearSolutions.com iTrader: (37)	You can still hit boost target and still have a small leak. If it's not a physical leak in the system then its usually the boost solenoids.
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07-13-2015, 03:27 PM	#6
007_e350 Lieutenant Colonel 226 Rep 1,909 Posts Drives: 335i 2008 MHD'd / x5d E70 Join Date: May 2013 Location: left lane iTrader: (3)	does the boost build slow ? I think 30FF is triggered if actual boost does not meet targeted value in 3 secs... I have a slight leak in valve cover but still don't get 30FF, its gotta be something major or try removing the JB4 or current tune and check __________________ Mods: 7" VRSF FMIC, Forge DVs, RB PCV, BMS Oil Cooler, VRSF DPs, MHD, JB4g5, OFT DIYs: Walnut blasting : Trans Oil at 45k, w Filter at 65k : Diff Oil Flush @ 45k : WP&TS @ 69k : Alternator @ 79k --- E70d Alphabet Soup del 44.4k : JR Stg2.25 tune : Buzzken Catted Exhaust : Trans fluid drain/ fill (3 Qrts), both Diffs fluids flushed Wheels: Style 95s on PSSs (Sold): AG 359s on S04s : 162s on Blizzaks : Rohana RF1 Matt black
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07-14-2015, 04:34 PM	#7
montegokid94 Banned 38 Rep 263 Posts Drives: 4 wheels Join Date: Jun 2014 Location: Everywhere iTrader: (9)	It hits boost pretty fast I need to do logs asap so you guys can see what's actually going on
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