Could I run BM3 STG2 with just a dp?

1slow320 · 02-20-2020, 07:54 AM

I'm on BM3 STG1 right now with a catless downpipe, for stage 2 you need a downpipe, intercooler, and chargepipes (but those are optional). I'm in Florida so it's normally hot and humid but when it does get cold outside could I theoretically run STG2 without the intercooler or would that be bad?

rjd_F30 · 02-20-2020, 07:55 AM

You can, but you really shouldn't especially in Florida.

1slow320 · 02-20-2020, 03:12 PM

Quote:

Originally Posted by rjdnyy224

You can, but you really shouldn't especially in Florida.

That's what I mean. But some days in winter it does get cooler and I was wondering if I could on those days

Cpatel · 02-20-2020, 04:26 PM

You're going to blow the stock chargepipe on stage 2 because of the added boost.
The stock chargepipe is plastic and blows on stock boost pretty frequently.

Be ready

rjd_F30 · 02-20-2020, 05:20 PM

Quote:

Originally Posted by 1slow320

That's what I mean. But some days in winter it does get cooler and I was wondering if I could on those days

You can, but you really shouldn't. You'll run into heat soak problems and increase knock risk.

1slow320 · 02-21-2020, 10:06 AM

Quote:

Originally Posted by rjdnyy224

You can, but you really shouldn't. You'll run into heat soak problems and increase knock risk.

Yeah that's fair enough I'll just wait until I can get the 2 together

DoiyaSan · 02-21-2020, 02:49 PM

It looks like you own a 320i so I strongly recommend you against going stage 2. The engine is more fragile that the low compression version, and the boost target and torque of stage 2 will cause issues. Stage 1 is maximum.

I think the forum already had some N20s with BM3 that blew.

mike@x-ph.com · 02-22-2020, 02:08 PM

Quote:

Originally Posted by 1slow320

I'm on BM3 STG1 right now with a catless downpipe, for stage 2 you need a downpipe, intercooler, and chargepipes (but those are optional). I'm in Florida so it's normally hot and humid but when it does get cold outside could I theoretically run STG2 without the intercooler or would that be bad?

You could but no point in doing so.

Your car will not be making more power since ECU will lower ignition timing to keep the temp in check

Your stock charge pipe will not last long with that kind of boost either

02-20-2020, 07:54 AM	#1
1slow320 New Member 0 Rep 20 Posts Drives: 2014 F30 320i Join Date: Aug 2019 Location: Florida iTrader: (0) Garage List [0.00]	Could I run BM3 STG2 with just a dp? I'm on BM3 STG1 right now with a catless downpipe, for stage 2 you need a downpipe, intercooler, and chargepipes (but those are optional). I'm in Florida so it's normally hot and humid but when it does get cold outside could I theoretically run STG2 without the intercooler or would that be bad? __________________ 2014 F30 320i \| BM3 Stage 2 \| xHP Stage 3 \| Euromotive Catless Downpipe \| GPlus FMIC \| MAD Chargepipe \| GFB DV+ \| 335i Muffler & Resonator Delete
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02-20-2020, 07:55 AM	#2
rjd_F30 Brigadier General 2000 Rep 3,680 Posts Drives: 2013 335i 6MT Join Date: Jun 2017 Location: New Jersey iTrader: (0)	You can, but you really shouldn't especially in Florida. __________________ Instagram: rjd_f30 \| Current: EBII 2013 335i 6MT RWD & Sprint Blue 2008 Audi RS4 \| Retired: 2013 328i, 2000 XTerra, 2022 Civic Si \|
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02-20-2020, 04:26 PM	#4
Cpatel Private First Class 40 Rep 178 Posts Drives: N26 328i Join Date: Oct 2018 Location: USA iTrader: (0)	You're going to blow the stock chargepipe on stage 2 because of the added boost. The stock chargepipe is plastic and blows on stock boost pretty frequently. Be ready
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02-21-2020, 02:49 PM	#7
DoiyaSan Noob 2 Rep 13 Posts Drives: F30 320i xdrive Join Date: Feb 2020 Location: New York, USA iTrader: (0)	It looks like you own a 320i so I strongly recommend you against going stage 2. The engine is more fragile that the low compression version, and the boost target and torque of stage 2 will cause issues. Stage 1 is maximum. I think the forum already had some N20s with BM3 that blew.
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