Tuning · BMW 135i (E82 / E88)
135i
N55
The original 135i with the N55, the E82 coupe and E88 convertible. Hand-calibrated from Stage 1 through to hybrid and big-turbo builds.
Engine
N55
Stock
302 bhp · 400 Nm
Stage 3 ceiling
302 bhp
About this tune
The E82 / E88 135i (LCI N55 production, 2010-2013) is the original 1 Series hot hatch, replacing the older N54 twin-turbo from the pre-LCI cars. Stock is 302 bhp / 400 Nm, sent rear-wheel through the ZF 6HP automatic or a 6-speed manual. Available as the E82 coupe and E88 convertible. The compact body and analogue chassis make it one of the most rewarding N55 cars to tune, Stage 1 alone transforms the car.
BMW 135i tuning
The E82 Coupe and E88 Convertible with the LCI N55 ran from 2010 through 2013, the last years of the E-body 1 Series before the F20 generation. Both come rear-wheel drive with a choice of ZF 6HP automatic or 6-speed manual. Stock output is 302 bhp / 400 Nm. Note: pre-LCI E82 and E88 ran the N54 twin-turbo — this page covers LCI N55 cars only. The analogue steering rack, compact dimensions and N55 hardware ceiling make the E82 one of the more rewarding platforms in the range to tune, and Stage 1 transforms the mid-range without any hardware work. Stage 2+ at 440 bhp / 600 Nm keeps the stock turbo; beyond that, the N55 scales to around 800 bhp on a hybrid or big-turbo build with supporting fuelling.
The E82 / E88 135i runs the N55 MEVD17.2 DME alongside the 6HP auto or 6-speed manual — both specific to the E-series, unlike the ZF 8HP in F-series N55 cars. Samuel tunes the E82 Coupe and E88 Convertible to the same spec: Stage 1 lifts the N55 to 380 bhp · 500 Nm over OBD, no hardware required, on BM3, MHD or MG Flasher. Stage 2 adds downpipe, intake or panel filter and intercooler for 420 bhp · 550 Nm; Stage 2+ goes further with the B58 TU fuel pump at 440 bhp · 600 Nm. Every map is hand-calibrated for the specific car, its fuel grade and installed hardware — not a base file loaded and left.
Configurator
Build your 135i tune
Choose your stage — Stage 1, Stage 2 or Stage 3 — add the options that fit your car, and send the full build to Samuel for a custom remote remap. He'll quote, schedule, and personally calibrate within 24 hours of confirmation.
Add a stage or add-on
£0
Engine guide
135i N55 tuning on the E82 / E88: the engine in full
The N55 in the 135i is the same unit fitted to the M235i, F30 335i and F32 435i — one turbo, one MEVD17.2 DME, the same stage targets across the family. Samuel's E82 / E88 calibration accounts for the E-series gearbox options (6HP auto or 6-speed manual) rather than the ZF 8HP, and the compact E-body exhaust geometry. Stage 1 reaches 380 bhp · 500 Nm from the OEM hardware; Stage 2 adds airflow upgrades for 420 bhp · 550 Nm; Stage 2+ with the TU fuel pump lands at 440 bhp · 600 Nm. Every map is log-reviewed after the first flash before sign-off.
Stage 1
380 bhp · 500 Nm
No hardware required. The MEVD17 DME is flashed via the OBD port. BMW 135i N55 Stage 1 unlocks 380 bhp and 500 Nm from the OEM hardware (up from 302 / 400 stock). The BMW 135i E82 chip tuning starting point, and the natural first modification for owners of the LCI N55 hot hatch.
Every 135i tune Samuel produces is calibrated individually for the specific car, fuel grade and installed hardware, not a base map loaded and left. BMW 135i tuning done correctly accounts for the E82 / E88 chassis behaviour, the ZF 6HP automatic or 6-speed manual gearbox calibration, and UK fuel quality; the map is reviewed against your data logs after the first flash and revised before sign-off.
Compatibility
This 135i tune runs on Bootmod3, MHD or MG Flasher — all three flash the N55 over OBD. Compare platforms or see full N55 compatibility.
135i specs & stage targets
BMW 135i tuning at a glance
- Engine
- N55
- Body styles
- E82 Coupe · E88 Convertible
- Chassis codes
- E82 / E88
- Production
- 2007–2013
- Drivetrain
- Rear-wheel drive
- Stock output
- 302 bhp · 400 Nm
- Tuning ceiling
- ~800 bhp on the right hardware
| Stage | Target |
|---|---|
| Stage 1 | 380 bhp · 500 Nm |
| Stage 2 | 420 bhp · 550 Nm |
| Stage 2+ | 440 bhp · 600 Nm |
| Stage 3, Hybrid Turbo | Up to 800 bhp depending on spec |
| Stage 3, Big Turbo Kit | Up to 800 bhp depending on spec |
FAQ
135i tuning — frequently asked questions
This page covers the E82 Coupe and E88 Convertible with the LCI N55 (2010–2013), not the pre-LCI N54 cars. Both share the N55 3.0L turbocharged inline-six and run the same core calibration — every tune Samuel delivers is built for your specific car, fuel grade and installed hardware, not a base file.
Most E82 / E88 135i cars are out of factory warranty at this stage, but if you hold an extended plan, a tune can be attributed to a failure if BMW investigates. Samuel's 135i maps stay within the mechanical limits of the N55 hardware and are reversible to stock before any dealer visit. A personal call either way.
BM3 is the most established for the N55 and the best pick if you want realtime monitoring through the app. MHD was the dominant N55 platform before BM3 caught up and still provides a detailed data-logging toolset for Stage 1 through Stage 2+. MG Flasher is a clean alternative for owners already in that ecosystem. The map Samuel builds is the same across all three; the choice is about your flashing tool.
The E82 and E88 use either the ZF 6HP automatic or a 6-speed manual. xHP covers the 6HP on E-series cars differently to the 8HP on F-series N55s — check xHP's compatibility notes for your specific gearbox before adding it. If you're on the 6-speed manual there is nothing to tune there.
Yes — once you've driven the car, send your data logs back through BM3, MHD or MG Flasher and Samuel reviews them before sign-off. If the calibration needs revision for your fuel grade or hardware, the file is updated. That review step is what makes it a hand-calibrated tune rather than a file delivery.
Keep exploring
Keep exploring 135i tuning
Other N55 models we tune: M2 (N55), M235i, M135i, 335i, 335i (E90), 435i.
Engine guide
N55 tuning
Every N55 BMW we calibrate, with the full Stage 1, 2 and 3 breakdown for the engine.
Learn moreStages
Stage 1 & Stage 2 explained
What separates Stage 1 from Stage 2 on the 135i, the real-world gains and the hardware each one needs.
Learn morePricing
How tuning is priced
How the licence, off-the-shelf maps and custom calibration are priced. We quote your exact spec, never a fixed menu.
Learn moreGuide
What is bootmod3?
New to remote flashing? A plain-English explainer on the platform and how a custom map reaches your car.
Learn more