E46Fanatics - View Single Post - Whats needed to swap from B25 to B30 intake?
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Old 04-15-2019, 08:08 AM   #9
zfiles1701
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Join Date: Oct 2018
Location: Chapin, SC
Posts: 22
My Ride: 2002 325it wagon
Year: 2002
Model: 325it sport wagon
Transmission: ZF 5hp
Originally Posted by armenh7 View Post

I mentioned the maf since a bigger maf reads more airflow


I understand! I also put in the bigger maf but from my log readings without another bigger cam it is not really necessary

Actually, I'm putting in a B30 intake cam. From what you guys are saying, looks like the bigger B30 maf and upper intake boot would make a difference. Is that correct?
And, does that mean I'll need to change my intake air filter box too?
Thanks
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