Considering an ECU remap for your BMW 3 Series 335i 306hp? A Stage 1 remap can take this F3x - 2011 - 2015 petrol engine from 306 BHP to 365 BHP and from 400 Nm to 520 Nm of torque (naturally aspirated). This engine scores 5.5/10 for remap suitability. Get a free personalised quote from a trusted remap professional and find out exactly what your BMW 3 Series can achieve.
Comparisons are calculated from our own recorded Stage 1 figures.
The BMW 3 serie 335i 306hp is a 3.0L naturally aspirated petrol engine producing 306 BHP and 400 Nm from the factory. With a typical Stage 1 remap, output increases to approximately 365 BHP and 520 Nm — a gain of around 59 BHP (19%) and 120 Nm (30%).
This engine has moderate remap suitability, with gains weighted towards torque — you will notice the difference most strongly in mid-range pulling power and in-gear acceleration. The tuning headroom is classified as high, based on the percentage gain available from the factory output.
From a technical perspective, the transmission is many variants use zf 8-speed automatic (where fitted); manuals also exist. at this torque level, transmission and driveline servicing history becomes especially important..
Considerations: Naturally aspirated engine: gains are usually limited; results vary widely.. Unusually high gain for NA engine: treat as an estimate and verify against the exact engine variant.. High tuned torque: check transmission torque capacity and service history.. Large torque increase: drivetrain condition (clutch/gearbox) becomes more important at this level.
All figures shown are typical estimates based on aggregated Stage 1 data for this engine variant. Actual results depend on vehicle condition, mileage, and the chosen tuning method. We recommend discussing your specific vehicle with a qualified remap professional.
| Engine | BHP | Gain | Torque | Gain | Score |
|---|---|---|---|---|---|
| 316D 116hp (1995cc) | 116 → 190 | +74 | 260 → 400 | +140 | Excellent (8.5/10) |
| 316i 136hp | 136 → 210 | +74 | 220 → 310 | +90 | Good (6.5/10) |
| 318D 136hp (1995cc) | 136 → 190 | +54 | 320 → 400 | +80 | Excellent (8.5/10) |
| 318D 143hp (1995cc) | 143 → 190 | +47 | 320 → 400 | +80 | Excellent (8/10) |
| 320D 163hp | 163 → 220 | +57 | 380 → 440 | +60 | Good (7.5/10) |
| 320i (1600cc) 170hp | 170 → 220 | +50 | 250 → 315 | +65 | Moderate (5.5/10) |
| 328D 180hp | 180 → 270 | +90 | 380 → 500 | +120 | Excellent (8/10) |
| 320i 184hp | 184 → 260 | +76 | 270 → 420 | +150 | Good (6.5/10) |
| 320D 184hp | 184 → 220 | +36 | 380 → 440 | +60 | Good (7/10) |
| 320D 200hp | 200 → 220 | +20 | 420 → 440 | +20 | Moderate (5.5/10) |
| 325D 218hp (1995cc) | 218 → 270 | +52 | 450 → 500 | +50 | Good (7/10) |
| 328i 245hp | 245 → 280 | +35 | 350 → 430 | +80 | Moderate (5/10) |
| 330D 258hp | 258 → 300 | +42 | 560 → 650 | +90 | Good (7/10) |
| 335D xDrive 313hp | 313 → 365 | +52 | 630 → 710 | +80 | Good (6.5/10) |
| 335i Active Hybrid 340hp | 340 → 400 | +60 | 400 → 520 | +120 | Moderate (5.5/10) |
| M3 431hp | 431 → 500 | +69 | 550 → 650 | +100 | Moderate (5/10) |
| M3 Competition 450hp | 450 → 500 | +50 | 550 → 680 | +130 | Moderate (5/10) |
Get a personalised remap quote for your BMW 3 Series. We'll connect you with a trusted professional in your area.
All figures shown are typical estimates based on aggregated Stage 1 data for this engine variant. Actual results depend on vehicle condition, mileage, and the chosen tuning method.
We recommend discussing your specific vehicle with a qualified remap professional before proceeding.
