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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > baseline dyno before or after installing tune?



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      04-30-2012, 03:58 PM   #1
jetblackcoupe
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baseline dyno before or after installing tune?

My PROcede V5 and BMS DCI just came in the mail (thanks to Jeff@topgearsolutions).. Should I get the stock numbers by:

1) dyno, install the tune, then dyno again probably on a separate day
2) install the tune, dyno run, then go to map 0 and dyno again

Also, is there any difference at all between map 0 and the procede completely uninstalled?
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      04-30-2012, 04:01 PM   #2
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dci would affect going back to stock and doing a run.

the legit way for a stock baseline is to actually be stock.
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      04-30-2012, 04:39 PM   #3
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Quote:
Originally Posted by hemi to e90 View Post
dci would affect going back to stock and doing a run.

the legit way for a stock baseline is to actually be stock.
+1

Dyno completely stock first.
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      04-30-2012, 05:14 PM   #4
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Dyno before tune install would be the best approach but there will be very little difference between map 0 and stock. It's more likely there will be no difference at all.

So if it would require a separate visit and a greater expense I would not even bother.

If you were considering waiting to be FBO before going to the dyno for a baseline that would be a different story altogether.
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      04-30-2012, 05:21 PM   #5
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I think map0 is passthrough, meaning the tune is basically not there and not interfering with data the various sensors are sending to the DME.

run for a while on map0 or with the tune to make sure your DME has properly adjusted...
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      04-30-2012, 06:00 PM   #6
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The afr's are different stock vs procede map 0
Dyno stock then dyno with tune and intake!
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      04-30-2012, 06:07 PM   #7
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Quote:
Originally Posted by Beemw335 View Post
The afr's are different stock vs procede map 0
Dyno stock then dyno with tune and intake!
this

you also need time for the tune to adapt once you put it in.
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      04-30-2012, 07:06 PM   #8
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would it matter if I dyno two separate days? I hear lots of talk about testing conditions and ambient temperature.. will it matter that much? because I don't think I'd be able to dyno stock then install both then dyno again same day (it'll be my first time installing)
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