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Go Back   E46Fanatics > Tuning & Tech > Driveline, Engine & DME Tuning

Driveline, Engine & DME Tuning
Talk about driveline improvements, NA tuning and DME tuning your E46 BMW here. This includes diffs, intakes, exhausts, chips, software and OBD tuning.

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Old 08-17-2014, 12:09 AM   #1
sieskei
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Join Date: Jul 2014
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My Ride: E46 325iA
M54B25 swap intake with B30

Hi guys,
I'm new here and I want to ask you a few things.

I want to replace the part of the m54b25's intake system with b30.
This modification include intake manifold + disa, throttle body, hoses and may be MAF and top of air box from b30.

1. If I swap the throttle body will it be controlled correctly?
2. I'm not sure I need a B30's MAF?
I guess the diameter is larger and can I use adapter (from larger to smaller hose) and stay with mine?
I also think that if I replace MAF sensor will need a remap / reflash.

What do you think about it?
10x in advance!
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Old 08-17-2014, 01:36 PM   #2
HakenTT
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Don't do it. Makes the engine run worse.
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Old 08-17-2014, 02:46 PM   #3
sieskei
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Quote:
Originally Posted by HakenTT View Post
Don't do it. Makes the engine run worse.
Why, can you explain?
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Old 08-17-2014, 03:35 PM   #4
Rob43
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Quote:
Originally Posted by HakenTT View Post
Don't do it. Makes the engine run worse.
He is not a good source of info on this.

Quote:
Originally Posted by sieskei View Post
Why, can you explain?

Contact "Iceman00" on this, he probably has the most & best info.

EDIT: Also contact "jared_wiesner", he did this on his 328.

Good luck,
Rob43
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Last edited by Rob43; 08-18-2014 at 02:17 PM.
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