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Z4 N20 Stage 1

Specific discussion about the E89 2009 Z4 (sDrive35is, sDrive35i, sDrive30i, sDrive23i)
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animator
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Z4 N20 Stage 1

Post by animator » Mon Dec 04, 2017 11:54 pm

Hey peeps,

Had my Z4 remapped today. Can highly recommend getting it done if you run with a 2.0T. It runs much more smooth now than it did before.

https://www.dropbox.com/s/hdtjpgh103pst ... 4.mp4?dl=0
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buzyg
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Z4 N20 Stage 1

Post by buzyg » Tue Dec 05, 2017 1:01 am

Can't argue with that. :thumbsup:
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Smartbear
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Z4 N20 Stage 1

Post by Smartbear » Tue Dec 05, 2017 1:47 am

Looks nice & smooth, how many bhp is it now?
Rob
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e89 Sdrive 20i, plenty of mumbo & good economy-the thinking bears z4
e89 Sdrive 30i, this ones busted, pass me another...
e85 3.0si sold

animator
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Z4 N20 Stage 1

Post by animator » Tue Dec 05, 2017 1:54 am

240hp

The dark red is the old curve the brighter is the remap.

Lower green the old and the higher is the new :)

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Smartbear
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Z4 N20 Stage 1

Post by Smartbear » Tue Dec 05, 2017 8:35 am

animator wrote: Tue Dec 05, 2017 1:54 am 240hp

The dark red is the old curve the brighter is the remap.

Lower green the old and the higher is the new :)
So what does “hk” stand for on the left side?
Rob
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e89 Sdrive 20i, plenty of mumbo & good economy-the thinking bears z4
e89 Sdrive 30i, this ones busted, pass me another...
e85 3.0si sold

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Kugaman1
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Z4 N20 Stage 1

Post by Kugaman1 » Tue Dec 05, 2017 10:29 am

Where did you get tbat done?
Am considering getting a remap but theres very little choice in NE Scotland so I will need to travel I think!

animator
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Z4 N20 Stage 1

Post by animator » Tue Dec 05, 2017 1:18 pm

Smartbear wrote: Tue Dec 05, 2017 8:35 am
So what does “hk” stand for on the left side?
Rob
hk = hp in danish.. Before the remap he did a pull too see how much power it had stock. After the remap he did another pull and compared them on the same sheet. See how wobly the darker red line is in the higher RPMs. Its the wastegate which works much smoother now also.

It went from 190 hp / 300 nm to 240 hp and 360 nm. You could take it to 260 hp 400 nm but i didnt look so much at number i looked at the lines and lambda numbers mostly.
Kugaman1 wrote: Tue Dec 05, 2017 10:29 am Where did you get tbat done?
Am considering getting a remap but theres very little choice in NE Scotland so I will need to travel I think!
In Copenhagen, Denmark. I will go with you if you come here with your car :P

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SteveSmith
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Z4 N20 Stage 1

Post by SteveSmith » Tue Dec 05, 2017 2:05 pm

I thought torque and bhp always crossed over at 5250rpm?
28i M Sport - Alpine White / Canberra Beige, 19" M359’s, H&R’s / Eibachs, BMS Stage 1 - 271bhp, Front Splitter, CF Rear Lip, Alcantara Steering Wheel and Brembo 4 pots

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Z4 N20 Stage 1

Post by Smartbear » Tue Dec 05, 2017 2:58 pm

SteveSmith wrote: Tue Dec 05, 2017 2:05 pm I thought torque and bhp always crossed over at 5250rpm?
They should do if the graphs are extrapolated correctly :?
Mine measured 179bhp on the initial run but the evolve Dyno is known to be conservative.
Rob
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e89 Sdrive 20i, plenty of mumbo & good economy-the thinking bears z4
e89 Sdrive 30i, this ones busted, pass me another...
e85 3.0si sold

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Z4 N20 Stage 1

Post by animator » Tue Dec 05, 2017 3:21 pm

Guess it depends on what gear you make the run in? This was done in 4th he also made one in 5th to 260 km/h where it showed 243 hp at 5271 rpms.

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Z4 N20 Stage 1

Post by Smartbear » Tue Dec 05, 2017 3:23 pm

animator wrote: Tue Dec 05, 2017 3:21 pm Guess it depends on what gear you make the run in? This was done in 4th he also made one in 5th to 260 km/h where it showed 243 hp at 5271 rpms.
Mine was tested in 4th as well :thumbsup:
Rob
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e89 Sdrive 20i, plenty of mumbo & good economy-the thinking bears z4
e89 Sdrive 30i, this ones busted, pass me another...
e85 3.0si sold

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