BMW 3 Series 335i - N55 Twinscroll - 306hp Remap

Name: BMW 3 Series 335i - N55 Twinscroll - 306hp ECU Remap
Brand: BMW

Expected gains of +54 BHP and +120 Nm torque

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BHP+54 hp (18%)

Standard

306 hp

Tuned

360 hp

Torque+120 Nm (30%)

Standard

400 Nm

Tuned

520 Nm

Suitability

Good (7/10)

Gains Profile

Torque-focused

Headroom

High

BMW 3 Series 335i - N55 Twinscroll - 306hp ECU Remapping

Considering an ECU remap for your BMW 3 Series 335i - N55 Twinscroll - 306hp? A Stage 1 remap can take this E90/E91 - 2005 - 2010 petrol engine from 306 BHP to 360 BHP and from 400 Nm to 520 Nm of torque (turbocharged). This engine scores 7/10 for remap suitability. Get a free personalised quote from a trusted remap professional and find out exactly what your BMW 3 Series can achieve.

How this engine compares

37thof 141 BMW 3 Series engines by power gain
81%of the 9,842 engines we hold gain data for see a smaller power increase
87%of engines with torque data see a smaller torque increase

Comparisons are calculated from our own recorded Stage 1 figures.

Assessment

The BMW 3 serie 335i - N55 Twinscroll - 306hp is a 3.0L turbocharged petrol engine producing 306 BHP and 400 Nm from the factory. With a typical Stage 1 remap, output increases to approximately 360 BHP and 520 Nm — a gain of around 54 BHP (18%) 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 5/6-speed automatics (where fitted); manuals also exist. at this torque level, transmission and driveline servicing history becomes especially important..

Considerations: Turbo petrol: fuel quality and cooling can influence repeatable performance.. 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.

Considerations

!Turbo petrol: fuel quality and cooling can influence repeatable performance.

!High tuned torque: check transmission torque capacity and service history.

!Large torque increase: drivetrain condition (clutch/gearbox) becomes more important at this level.

Other 3 Series E90/E91 - 2005 - 2010 Engines

Engine	BHP	Gain	Torque	Gain	Score
316D 115hp	115 → 180	+65	260 → 400	+140	Excellent (8/10)
316i 122hp	122 → 136	+14	160 → 177	+17	Moderate (4.5/10)
318D 122hp	122 → 155	+33	280 → 340	+60	Good (7.5/10)
318D 136hp	136 → 180	+44	300 → 390	+90	Excellent (8/10)
318D 143hp	143 → 180	+37	300 → 390	+90	Good (7.5/10)
318i 143hp	143 → 157	+14	190 → 216	+26	Moderate (4.5/10)
320D 150hp	150 → 200	+50	330 → 400	+70	Good (7.5/10)
320i 150hp	150 → 175	+25	200 → 215	+15	Moderate (4.5/10)
320D 163hp	163 → 215	+52	350 → 420	+70	Good (7.5/10)
320i 163hp	163 → 175	+12	200 → 220	+20	Moderate (4/10)
320i 170hp	170 → 182	+12	210 → 230	+20	Moderate (4/10)
320si 173hp	173 → 185	+12	200 → 220	+20	Moderate (4/10)
325D 177hp	177 → 214	+37	400 → 452	+52	Good (6.5/10)
320D 177hp	177 → 215	+38	350 → 420	+70	Good (7.5/10)
325D 197hp	197 → 233	+36	400 → 490	+90	Good (7.5/10)
325i - N52 - 211hp	211 → 232	+21	250 → 275	+25	Moderate (4/10)
325i - N53 - 211hp	211 → 265	+54	270 → 315	+45	Moderate (5.5/10)
330D 211hp	211 → 270	+59	500 → 595	+95	Good (7.5/10)
325i - N53 - 218hp	218 → 265	+47	270 → 315	+45	Moderate (5/10)
325i - N52 - 218hp	218 → 232	+14	250 → 275	+25	Moderate (4/10)
328i 230hp	230 → 274	+44	300 → 325	+25	Moderate (4.5/10)
330D 231hp	231 → 275	+44	500 → 620	+120	Good (7.5/10)
330D 245hp	245 → 300	+55	520 → 600	+80	Good (6.5/10)
330i 258hp	258 → 274	+16	300 → 325	+25	Moderate (4/10)
330i 272hp	272 → 292	+20	320 → 340	+20	Moderate (4/10)
335D 286hp	286 → 350	+64	580 → 680	+100	Good (6.5/10)
335D 306hp	306 → 340	+34	600 → 680	+80	Good (6/10)
335i - N54 - 306hp	306 → 370	+64	400 → 500	+100	Good (7.5/10)
335i - N54 PPK - 326hp	326 → 370	+44	450 → 500	+50	Good (6/10)
M3 420hp	420 → 440	+20	400 → 430	+30	Limited (3.5/10)

Technical Specifications

Fuel Type: Petrol
Aspiration: Turbocharged
Displacement: 3L
Capacity: 2979 CC
Type: Car
Engine Family: BMW 3.0L N55 NA Petrol

ECU & Transmission

Likely ECU Low confidence: Bosch MS45/ME9 (varies)
Gearbox Medium confidence: Many variants use ZF 5/6-speed automatics (where fitted); manuals also exist. At this torque level, transmission and driveline servicing history becomes especially important.

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MakeBMW

Model3 Series

GenerationE90/E91 - 2005 - 2010

Engine335i - N55 Twinscroll - 306hp

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.