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2Addicts | BMW 2-Series forum Technical Topics N55 (M235i) Engine, Transmission, Exhaust, Tuning Pure Turbo n55 upgrade

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      02-12-2017, 02:01 PM   #67
M235iColombia
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Drives: BMW M235i
Join Date: Feb 2017
Location: Bogota, Colombia

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Quote:
Originally Posted by Darkiedm4 View Post
Turbogat? Pretty non existant Both stage1 and stage2 options have more torque over the whole rev range than stock turbo.

Stage1 makes max torque at 3k rpm. For stage2 max torque is around 4k rpm. If you want you can even increase torque to around 4.8k rpm but it depends how you prefer to drive the car and how far you want to go. Stage 2 really has a nasty topend power. You have to sit in the car to feel it lol.

My install was done at PSG in Geel. Great service, good price etc etc. They know their stuff.

I ran stage1 turbo for 20000+ km without issue. Now stage2 is on the car for 1500km also no issues whatsoever.

Tuning wise I am just running JB4 with a lowered ign adv curve on stock flash with limiter removed (tnx BR-Performance for making this happen).
HI Darkiedm4 and everyone

Im new here but no into N55 experiences.

I Just want to know if your speed limiter could be removed and how do you prove it.

I have repro on my ECU. Actually, I did check on the coding my M235i had a speed limiter on 327km/h. But, when I did try to get the speed up to 280km/h the car just die and stay constant on 280.

I have 363whp and 546Nm with oem turbo in Bogotá (8500ft at sea level)

Thank you
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      02-26-2017, 08:55 AM   #68
Mywifes335
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Drives: 2014 FBO M235i
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I've had my Pure Stage 2 with full boltons and meth since July and love it. The big mod this year will ve LSD. But before that, I was wondering if I need to upgrade my LPFP.

I'm currently running a BMS Meth setup with 2 CM5 nozzles. No issues.

I was wondering if any of you guys had upgraded to the LPFP but not the PI? Is it necessary if I do not plan to change my tune in the iterim?

On Map 3 I'm putting down 455whp, with total dyno results below:

505/497wtq on Map 6, 100 octane, meth 21-22psi

Low boost 455whp/414wtq on Map 3, 93 and meth, 18-19psi

Please let me know your thoughts on LPFP.

Thanks!
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SerenVoX146.00
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