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      12-11-2015, 05:47 PM   #1
Stuart@BMRAutowerkes
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M235i Tuning

Hi all just want to share some advancements we've been making with the N55 engine with regards to tuning.

As we know the M235 utilises the N55 engine with a claimed flywheel power of 245kw... real world though, they seem to be dynoing rather high as we see results from 215-225rwkw, indicating that they are likely a tad underrated. Conversely, the 335i/435i that are rated at 225kw flywheel seem to be spot on dynoing around 185-195kw at the rear wheels.

This is one of our customer's cars who has had a JB4 for about 12 months now and recently got in touch with us to see if there was anything new we could do for more power. We suggested removing the piggyback and going for a proper flash tune. (The car also has a downpipe with high flow cat)

The method was:
1. Powerrun 'as is' with the JB4 in to set a benchmark (237rwkw)
2. Remove JB4 and do a stock run (220rwkw - not far off the very first dyno run we did with this car approx 18months ago of 217rwkw)
3. Upload flash tune for final run (261rwkw)

Both us, and the customer are very pleased with the results. If anyone is interested in more info or would like to get this dyno to their M235i get in touch with us via www.bmraw.com.



For 220i & 228i tuning see this thread

Last edited by Stuart@BMRAutowerkes; 06-02-2016 at 03:10 AM..
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      12-11-2015, 07:44 PM   #2
Amack
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Sorry for a silly question here. The flash tune, is this detectable for warranty?

And how pedantic are BMW going to be re: Flash tunes?
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      12-14-2015, 10:00 PM   #3
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Quote:
Originally Posted by Amack View Post
Sorry for a silly question here. The flash tune, is this detectable for warranty?

And how pedantic are BMW going to be re: Flash tunes?
Yes it's detectable if left on there.

We can flash your car back to stock if you need to visit BMW.
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      12-14-2015, 11:48 PM   #4
Amack
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Whats the cost for a Flash tune?
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      02-17-2016, 04:48 PM   #5
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F30 335i Flash tuned

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      02-18-2016, 12:27 AM   #6
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Interesting post Stu, My car made 205rwkw stock and 230rwkw with the Dinan tune on a dyno dynamics dyno. I'm surprised your stock reading is high. I am going to install an ESS Etronic and see what that makes and then i might flash it after that as well to test results. I'll let you know, if you want. I'm surprised with JB4 results though.
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      02-18-2016, 08:12 PM   #7
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Nice results Stuart! I have not forgotten about my car... just a bit snowed under.
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      02-18-2016, 08:36 PM   #8
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Quote:
Originally Posted by andrew@southernBM View Post
Interesting post Stu, My car made 205rwkw stock and 230rwkw with the Dinan tune on a dyno dynamics dyno. I'm surprised your stock reading is high. I am going to install an ESS Etronic and see what that makes and then i might flash it after that as well to test results. I'll let you know, if you want. I'm surprised with JB4 results though.
The 'stock' run above had the high flow cat DP in it remember, hence the slightly higher reading of 220rwkw.
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      02-18-2016, 09:54 PM   #9
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Quote:
Originally Posted by Stuart@BMRAutowerkes View Post
The 'stock' run above had the high flow cat DP in it remember, hence the slightly higher reading of 220rwkw.
I think your dyno has always been a bit on the happy side though. Good gains over stock is that main thing that can be confirmed.
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      02-21-2016, 08:55 PM   #10
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Is this for NSW customers only, or is there a way to reflash interstate?
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      02-26-2016, 06:22 AM   #11
den525
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Here's some free advertising for you Stuart!

Got my flash tune done at BMRAutowerkes today (plus my mate's M135i as well). Both cars are stock except for M235i with a Milltek Cat-back exhaust. The M135i with resonator delete and custom muffler from HiTech.

In the 2nd pic, the M135i is compared with a JB4 tune as well.

M235i
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M135i
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There was also another M135i there with a catless DP which did 270kw.

Always great spending some time with the boys at BMR always some great chat and banter.
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      02-28-2016, 05:55 PM   #12
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Thanks for posting up Dennis, hope you're enjoying the car
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      06-03-2016, 12:33 AM   #13
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Quote:
Originally Posted by Bakks View Post
Is this for NSW customers only, or is there a way to reflash interstate?
Stuart - can you please advise?
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      06-03-2016, 06:21 PM   #14
Stuart@BMRAutowerkes
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Quote:
Originally Posted by Bakks View Post
Stuart - can you please advise?
PM sent
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      07-02-2016, 02:37 AM   #15
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Quote:
Originally Posted by Stuart@BMRAutowerkes View Post
PM sent
You able to PM me some details through too please?
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      07-02-2016, 02:53 AM   #16
Amack
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Although I havent had stu do a flash tune on my car, he has sorted me out with numerous mods and would highly recommend dealing with him. Future mods will def be a flash and will be seeking the guidence from brm autowerks.
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      07-05-2016, 05:30 AM   #17
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Hi There

Could you send thru some details and pricing please
Also do you have anyone in Brisbane?

cheers
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      12-13-2016, 08:26 PM   #18
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Quote:
Originally Posted by DanielGr View Post
You able to PM me some details through too please?
Stuart@BMRAutowerkes Hey mate, can you PM through some further details on the tunes for an M235i?
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      12-13-2016, 10:46 PM   #19
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Thanks for reminding me that I have a JB4 sitting in the boot of the car waiting for the guys at BMR to put in.... I have to get it done soon!
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      12-18-2016, 07:01 PM   #20
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Quote:
Originally Posted by MY 235 View Post
Thanks for reminding me that I have a JB4 sitting in the boot of the car waiting for the guys at BMR to put in.... I have to get it done soon!
Leaving it in the boot and get a flash tune!
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