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BMW 1 Series E87 - 2007 - 2011 135i - N55 - twinscroll 306hp Stage 1 Chip Tuning · ECU Remap

Name: BMW 1 Series E87 - 2007 - 2011 135i - N55 - twinscroll 306hp Stage 1 Chip Tuning
Brand: BMW

Catalog reference — not a measured result for this vehicle.

How much bhp does BMW 1 Series E87 135i - N55 - twinscroll 306hp chip tuning add?

Catalog reference: power 306 → 365 bhp, difference +59 bhp (19%); torque 400 → 520 Nm. Actual results depend on vehicle condition and measurement.

Power306 → 365 bhp+59 bhp (+19%)

Torque400 → 520 Nm+120 Nm (+30%)

Figures are typical ranges; exact results depend on the vehicle's hardware and dyno measurement.

Stage 1 Remap EGR Delete DPF Delete AdBlue / SCR Delete DTC / Fault Code Removal

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BMW 1 Series E87 - 2007 - 2011 135i - N55 - twinscroll 306hp

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Reversible: Yes, the original software is kept

BMW 1 Series E87 - 2007 - 2011 135i - N55 - twinscroll 306hp — Stage 1 Remap

Stage 1 re-calibrates the ECU software — boost, fuelling and ignition maps — within the factory hardware's safe tolerances. No hardware changes are required.

DPF Delete, EGR Delete, AdBlue / SCR Delete

BMW 1 Series E87 - 2007 - 2011 135i - N55 - twinscroll 306hp — Software deactivation of the diesel particulate filter (DPF/FAP) functions and fault codes. Verified software is used for AdBlue / SCR Delete, NOx Sensor Delete and EGR Delete fault solutions.

Solutions for this vehicle

BMW 1 Series 135i - N55 - twinscroll 306hp Pop & Bang tuning

BMW 135i Stage 1: all generations →

Stage 1 Remap

Software that optimises the engine's power and torque maps within safe limits.

EGR Delete

Software deactivation of the exhaust gas recirculation (EGR) valve control and fault codes.

DPF Delete

Software deactivation of the diesel particulate filter (DPF/FAP) functions and fault codes.

AdBlue / SCR Delete

Software deactivation of the AdBlue/SCR dosing system and its fault/warning functions.

DTC / Fault Code Removal

Switching off selected diagnostic trouble codes (DTC) in the ECU software.

OUTSIDE TÜRKİYE?

Where can this be done near you?

Prime Chiptuning applies the software at its own centres in Türkiye. Abroad, our partners carry out the work with the same files, and workshops can order the file directly.

ENGINE FAMILY

About the BMW 3.0 turbo petrol (N54, N55 and B58: 335i, 340i, 535i, 540i, M140i, M240i, X5 40i)

BMW's six-cylinder turbo petrols, the N54 (2006–2013, twin turbo), N55 (2009–2017, single twin-scroll turbo) and B58 (2015 onwards), power the 1, 2, 3, 4, 5, 6 and 7 Series, X3, X4, X5, X6 and Z4 from 306 to 387 hp and are famous for their response to software.

How a Stage 1 remap works on the BMW 1 Series E87 135i - N55 - twinscroll 306hp

Stage 1 recalibrates boost, ignition, fuelling and torque maps. The gain spreads across the whole rev range and is very clear in the mid-range. The automatic gearbox torque capacity is respected; knock-sensor data and fuel quality bound the calibration.

Pre-remap checklist

High-pressure fuel pump and injectors (a known issue on the N54 / N55).
Ignition coils and spark plugs.
Turbo wastegate play and boost leaks.
Oil consumption, PCV and cooling system (water pump, thermostat).

This section is based on Prime Chiptuning workshop experience; the power and torque figures come from the catalogue measurement above.

ECUs used in BMW vehicles

If you know your ECU family, its page lists exactly which solutions are available for it.

BOSCH EDC16C31 BOSCH EDC16C35 BOSCH EDC17CP02 BOSCH EDC17C41 BOSCH EDC17CP45 BOSCH EDC17C56 BOSCH EDC17C06 BOSCH MG1CS003 All ECU families →

BMW 1 Series — Power Calculator

Engine	Power	Gain
116D 115hp	115 → 180 bhp	+65 bhp
116i 122hp	122 → 135 bhp	+13 bhp
118D 136hp	136 → 180 bhp	+44 bhp
118D 143hp	143 → 180 bhp	+37 bhp
118i 143hp	143 → 155 bhp	+12 bhp
120D 163hp	163 → 215 bhp	+52 bhp
120D 177hp	177 → 215 bhp	+38 bhp
120i 170hp	170 → 185 bhp	+15 bhp
123D 204hp	204 → 245 bhp	+41 bhp
125i 218hp	218 → 250 bhp	+32 bhp
130i 265hp	265 → 285 bhp	+20 bhp
135i - N54 306hp	306 → 362 bhp	+56 bhp

Frequently asked questions

How much bhp does BMW 1 Series E87 135i - N55 - twinscroll 306hp chip tuning add?

Catalog reference: power 306 → 365 bhp, difference +59 bhp (19%); torque 400 → 520 Nm. Actual results depend on vehicle condition and measurement.

Will chip tuning damage the engine?

No. Values stay inside the safety margin the manufacturer leaves; engine, gearbox and turbo limits are not exceeded. Every file is verified with a road test and data logging. If the car needs maintenance first (worn injectors, blocked filter, weak clutch) we tell you before starting.

Will my fuel consumption go up?

With the same driving style it usually drops, because you hold the same speed at lower revs and less throttle. If you use the extra power, consumption naturally rises. It is down to your right foot.

How long does it take? Do I leave the car?

Most cars take 1–2 hours and you get the car back the same day; no need to leave it. Some models need the ECU removed, which takes longer — we tell you when booking.

Can I go back to stock later?

Yes. The original file is read and archived before any work. We restore the factory software free of charge whenever you ask.

Does it void my warranty?

Changing engine software can affect the manufacturer warranty. If a dealer finds a fault to be software related, they may refuse that claim. We want you to decide knowing this. Your original file stays with us and can be restored before a dealer visit.

Will it pass the roadworthiness test?

Stage 1 power software does not touch emission hardware. Work on emission systems is offered only for uses permitted by law; road use and inspection compliance remain the owner's responsibility.

How much does BMW 1 Series E87 135i - N55 - twinscroll 306hp chip tuning cost?

Price depends on the vehicle, the ECU and the solution chosen. Send us your vehicle details on WhatsApp and we will quote straight away. Inspection and measurement are free.

How is the work done?

We scan for faults and read the original software first. The file is adapted to your car's hardware, written, and verified on a road test. The original is archived.

Is DPF Delete possible on the BMW 1 Series E87 135i - N55 - twinscroll 306hp?

Yes. Our library contains a verified DPF Delete solution for the BMW 1 Series E87 135i - N55 - twinscroll 306hp. Once your original file is read, compatibility is checked and the job is applied.

What is checked on the BMW 1 Series E87 135i - N55 - twinscroll 306hp before remapping?

Before working on the BMW 3.0 turbo petrol (N54, N55 and B58: 335i, 340i, 535i, 540i, M140i, M240i, X5 40i) we check: High-pressure fuel pump and injectors (a known issue on the N54 / N55). Ignition coils and spark plugs. Turbo wastegate play and boost leaks. Oil consumption, PCV and cooling system (water pump, thermostat). If something needs attention, maintenance comes first; the remap is applied to a healthy engine.

⚠ Software work on emission systems is offered only for uses permitted by applicable law (motorsport, off-road use, export, fault diagnosis, etc.). Road use and inspection compliance of the vehicle remain the owner's responsibility.