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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 02-24-2010, 06:26 AM   #1
m-teknik
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rev limiting

I have 2004 330i and I miss E30 325i rev limiter. As you know some BMW's have smooth rev limit and some have vibrated. I hope that I described well. So I desire that kind of vibrated rev limiter on my E46. Is it possible to do this with any chip etc?

a few examples for vibrated rev limiter:


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Old 02-24-2010, 10:14 AM   #2
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Seems like a waste of time and money to me.
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Old 02-24-2010, 10:15 AM   #3
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You shouldnt be hitting your rev limiter.
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Old 02-24-2010, 12:40 PM   #4
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Originally Posted by m-teknik View Post
I have 2004 330i and I miss E30 325i rev limiter. As you know some BMW's have smooth rev limit and some have vibrated. I hope that I described well. So I desire that kind of vibrated rev limiter on my E46. Is it possible to do this with and chip etc?
I can see how it's cool and I'm not sure how it would be implemented (DME tweaking maybe?) but keep in mind the stock M54 oil pump doesn't like to hang out at red line for too long due to harmonic issues.
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Old 02-24-2010, 01:45 PM   #5
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................. But keep in mind the stock m54 oil pump doesn't like to hang out at red line for too long due to harmonic issues.
yes.
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Old 02-24-2010, 02:50 PM   #6
m-teknik
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I can see how it's cool and I'm not sure how it would be implemented (DME tweaking maybe?) but keep in mind the stock M54 oil pump doesn't like to hang out at red line for too long due to harmonic issues.
thanks for your helpfull respond. I drive in high revs for only street acceleration. Not too long. I am looking for reasonable cheap solution. Didn't anybody else need this ? I only wanted to get (my previous car) E30 325i's acceleration behaviour with E46 safety and comfort.
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Old 03-01-2010, 02:47 PM   #7
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The vibrated type simply cuts spark at Xrpm the. I think this is harder on everything in your engine considering its full bore to nothing and back in .05 sec... but it dos sound cool.
Most newer car i have been in are smooth, I THINK they cut fuel. actually I'm sure i read that somewhere but cant remember where

If you want that sound without killing your engine you should get a studder box. Summit or Jegs will have them.
you can set what rpm you want it "studder" at say 2500. I don't think it will do any good on an a/t but they are made to help you launch with a m/t.

Also your computer might not appreciated being undermined.
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