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      07-07-2020, 12:44 PM   #1
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A little throwback here
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      07-14-2020, 03:08 PM   #2
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A little throwback here
With bm3 did you have to upgrade the boost pipe? And charge pipe?
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      07-14-2020, 08:46 PM   #3
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With bm3 did you have to upgrade the boost pipe? And charge pipe?
I didn't but some people upgrade charge-pipe only
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      07-15-2020, 12:13 AM   #4
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With bm3 did you have to upgrade the boost pipe? And charge pipe?
I didn't but some people upgrade charge-pipe only
And it didn't blow under aggressive driving?
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      07-19-2020, 01:55 PM   #5
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And it didn't blow under aggressive driving?
Not for me in 2-2.5yrs but others yes
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      07-21-2020, 07:03 PM   #6
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Not for me in 2-2.5yrs but others yes
hoping ill have that same luck i just ordered the bm3 tune. I can't tune yet my cars in the shop getting a full paint correction ceramic coat. so this weekend I'm gonna have some fun. looking into a catless down pipe as well.
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      08-31-2020, 02:30 PM   #7
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2017 X4 M40i

Thank you for the vids. I recently tuned the wifes 2017 X4 M40i and around the same time added a VRSF charge pipe. Her stock charge pipe had blown about a month before the tune, so for the week we had the stock CP on there I had the same issue I'm about to explain:

I added the BM3 N55 OTS Stage 1, 93 Oct. At WOT at about 6500 rpm, I get a turbo stutter, like I've hit a wall, then at 7000 rpm when the gear shifts it goes away. I recall having a similar issue on my E70 X5M years ago with a tune, but always blamed that crappy 6sp trans. I can paddle shift at 6500 and no issues, it's just that last little 500 rpm surge. I tried to go back in and see if I loaded the Stg 1, 91 Oct if it would do it, but I'm not going to buy another license for that. I have a tuned 2015 N55 Stage 1, 93 Oct, 335i now and do not have this issue. Now she thinks her car is going to blow up or something Thoughts?
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      09-09-2020, 10:35 AM   #8
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Quote:
Originally Posted by Minez View Post
Thank you for the vids. I recently tuned the wifes 2017 X4 M40i and around the same time added a VRSF charge pipe. Her stock charge pipe had blown about a month before the tune, so for the week we had the stock CP on there I had the same issue I'm about to explain:

I added the BM3 N55 OTS Stage 1, 93 Oct. At WOT at about 6500 rpm, I get a turbo stutter, like I've hit a wall, then at 7000 rpm when the gear shifts it goes away. I recall having a similar issue on my E70 X5M years ago with a tune, but always blamed that crappy 6sp trans. I can paddle shift at 6500 and no issues, it's just that last little 500 rpm surge. I tried to go back in and see if I loaded the Stg 1, 91 Oct if it would do it, but I'm not going to buy another license for that. I have a tuned 2015 N55 Stage 1, 93 Oct, 335i now and do not have this issue. Now she thinks her car is going to blow up or something Thoughts?
Need to see a log
Most likely you either have old spark plugs and you're noticing a misfire.
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