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Old 12-30-2011, 04:01 PM   #13
Banned User
Join Date: Apr 2008
Location: Dallas, TX
Posts: 2,217
My Ride: E30-E46-E90-E90M-F30
Originally Posted by E46Mango View Post
How do you know you won't run lean with smaller injectors and restrictive tune with increased cylinder volume and cause irreversible heat damage?? (just a theory)

be careful!

yes running lean is a big concern for me that is why I am going to hook it up to my GT1 and see the 02 reading. If I am going to run lean then I have no choice but to droppe in the 330 purple injectors and send my car off to get a custome tune.

There are a few members on here than swap out their M52TUB25 and M54B25 to the b30 version and ran on their stock tunes and reported no issues so I am hopefull. I think Angie swap out her 2.5 for a 3.0 and ran stock tune for a while.
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