Anyone blown an N54 from BPU mods?

boostd92 · 06-03-2010, 11:32 AM

I'm going to be buying an '07/'08 335 coupe soon and have been reading, reading, reading to get up to pace with what's going on.

I have read pages and pages of threads and I've yet to come across someone who's blown up their motor with BPU mods.

I'll probably do a Procede (whatever v. is latest when I get the car), catless dp's, exhuast, FMIC, DCI, and that will probably be it (and an upgraded clutch when the time comes).

The car I can afford will probably be out of warranty. Have these N54's been pretty durable running 15psi with full BPU?

AltecBX · 06-03-2010, 11:37 AM

Yes, this engine(N54) is over-engineered. If you want to run 15+psi in Chicago, you might want to look into getting methanol.

Bagelfast · 06-03-2010, 11:40 AM

No really any blown engines... Not even blow turbos.. Basic mods tuned properly with the right octane and mods to support eachother have been very reliable in power and engine wise.

boostd92 · 06-03-2010, 11:44 AM

I just picked that example (15psi) out of the air from whatever I've been reading. Shooting for a numeric amount of boost is a silly goal. I just want whatever's safe on 93 octane with the above mods. It'd be nice to make as close to 400whp as possible, but I won't use meth.

I had a boost sensing switch in my meth kit fail on me in a previous vehicle and blew the motor. I don't like adding extra complexity any more than I have to.

joec500 · 06-03-2010, 12:31 PM

the engine itself is solid the known issues are:

Injectors
High Pressure Fuel Pump
VANOS, seems to be mostly in older builds (2008 and before)
Turbo Rattling (turbos generally operate fine, it's just they start rattling)

Most of the above, except for the HPFP seem to be resolved with updated part#'s

Overall this car is not too bad when compared to other euro cars with this power potential.

IL X5 M60i · 06-03-2010, 01:16 PM

Quote:

Originally Posted by AltecBX

Yes, this engine(N54) is over-engineered. If you want to run 15+psi in Chicago, you might want to look into getting methanol.

Not true I know pleanty of people around here running 15+ psi for thousands of miles without meth. It helps but not necessary.

OP, I'd go JB3 but that's just me. Proceed is nice too but just my opinion

GeorgiaTech335coupe · 06-03-2010, 01:20 PM

Quote:

Originally Posted by boostd92

I had a boost sensing switch in my meth kit fail on me in a previous vehicle and blew the motor. I don't like adding extra complexity any more than I have to.

Procede only raises boost and lowers ignition when it is sensing meth flow. Otherwise it is running a boost and ign retard that is safe for just pump, so you don't need to worry about this.

cotmfk · 06-03-2010, 02:53 PM

I have not heard of one yet.

06-03-2010, 11:32 AM	#1
boostd92 Captain 62 Rep 759 Posts Drives: '11 E92 M-Sport Join Date: Jun 2009 Location: Chicago, IL iTrader: (1) Garage List 2011 BMW 335i M-Spo ... [7.26]	Anyone blown an N54 from BPU mods? I'm going to be buying an '07/'08 335 coupe soon and have been reading, reading, reading to get up to pace with what's going on. I have read pages and pages of threads and I've yet to come across someone who's blown up their motor with BPU mods. I'll probably do a Procede (whatever v. is latest when I get the car), catless dp's, exhuast, FMIC, DCI, and that will probably be it (and an upgraded clutch when the time comes). The car I can afford will probably be out of warranty. Have these N54's been pretty durable running 15psi with full BPU?
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06-03-2010, 11:37 AM	#2
AltecBX Colonel 325 Rep 2,663 Posts Drives: BMW 335xi Sedan; BMW M3 ZCP Join Date: Nov 2007 Location: NYC iTrader: (0) Garage List 2018 BMW M3 ZCP [0.00] 2007 BMW 335Xi [0.00]	Yes, this engine(N54) is over-engineered. If you want to run 15+psi in Chicago, you might want to look into getting methanol. __________________ 335xi Sedan 6AT \| Weather(70-85°F) \| N54 Tune Comparison Chart \|\| N54 Turbo Upgrade Comparison Chart -PROcede Rev. 2.5 ~ v5 (3/17 maps) / JB4 (8/21 maps) / COBB (Stg2+FMIC LT Aggressive maps) †Procede Map2(UT 45 - IGN 40) Aggression Target 2.0 \| 0-60 in 4.0sec \|\| †Cobb E30 LT (35% Ethanol/65% 93 Octane) \| 0-60 in 3.9sec AR Design Catless DP \| BMS DCI + OCC \| ETS 5 FMIC \| Alpina B3 Trans Flash \|235/265 19" Michelin PSS
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06-03-2010, 11:40 AM	#3
Bagelfast Lieutenant Colonel 127 Rep 1,546 Posts Drives: BMW Join Date: Sep 2008 Location: USA iTrader: (0)	No really any blown engines... Not even blow turbos.. Basic mods tuned properly with the right octane and mods to support eachother have been very reliable in power and engine wise.
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06-03-2010, 11:44 AM	#4
boostd92 Captain 62 Rep 759 Posts Drives: '11 E92 M-Sport Join Date: Jun 2009 Location: Chicago, IL iTrader: (1) Garage List 2011 BMW 335i M-Spo ... [7.26]	I just picked that example (15psi) out of the air from whatever I've been reading. Shooting for a numeric amount of boost is a silly goal. I just want whatever's safe on 93 octane with the above mods. It'd be nice to make as close to 400whp as possible, but I won't use meth. I had a boost sensing switch in my meth kit fail on me in a previous vehicle and blew the motor. I don't like adding extra complexity any more than I have to.
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06-03-2010, 12:31 PM	#5
joec500 Brigadier General 125 Rep 3,004 Posts Drives: it has 4 wheels Join Date: Jul 2008 Location: San Francisco iTrader: (10)	the engine itself is solid the known issues are: Injectors High Pressure Fuel Pump VANOS, seems to be mostly in older builds (2008 and before) Turbo Rattling (turbos generally operate fine, it's just they start rattling) Most of the above, except for the HPFP seem to be resolved with updated part#'s Overall this car is not too bad when compared to other euro cars with this power potential.
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06-03-2010, 02:53 PM	#8
cotmfk Major General 2073 Rep 6,140 Posts Drives: M3 Join Date: Mar 2009 Location: Somewhere between DC and FL iTrader: (12)	I have not heard of one yet. __________________ When you say impact instead of affect/effect, you are communicating that you don't understand the difference between the two words, and are too lazy to learn.
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