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BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > Regional Forums > UK > UK Technical Forum > 320si remapping on a rolling road - anyone?



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      02-26-2013, 01:25 PM   #1
Rocket M3
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320si remapping on a rolling road - anyone?

Has anyone on here ever had a 320si remapped on a rolling road, and if yes, with what performance gains?
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      03-11-2013, 03:04 PM   #2
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Had mine done last month. 0% performance gain... The car would revert to its basemap every time the tuner went near the ignition timing.

I have had contact with a guy who ended up with 210hp but that took a new intake, schrick sport cams, a custom exhaust manifold with cat delete. All mods that cost big money. I have asked around a lot but the message is always the same - forget it. If you want more hp get a 335i it will be less expensive.

I still love my SI though I had hoped for some more power.
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      01-13-2014, 05:43 AM   #3
Jan E.
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Do You know what intake he has?

Im looking for something to replace what look like a restrictive original.
And do you know how the car performes with the mods? Less torque in the low range, so have to rev it more maybe?
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      01-13-2014, 06:27 AM   #4
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Don't bother remapping an NA car unless you've done mods that mean it no longer runs well.
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      01-14-2014, 06:39 PM   #5
ade146
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Quote:
Originally Posted by Digitalize View Post
Don't bother remapping an NA car unless you've done mods that mean it no longer runs well.
A very sensible post
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      01-15-2014, 05:30 AM   #6
Jan E.
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Especially in this tread

320si is notorious for not having the optimal stoichiometric mixture. So a 320si are one of the few NA cars I would recommend to check if a MAP is useful

Usually it's enough to get a software upgrade from the dealership. But in some cases that is not enough.
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