Hi guys,

Keeping in mind its the same engines does someone have more info what are the differences? Is it only the software (ECU map) or it have better IC, chargepipe, etc.? If its only the software is there an option for piggyback or something similar to increase the power but not void the warranty (easy to remove non flashing I guess)?

I'm asking that since the price difference for me is more than 6000 euros and if its for the same thing just the software - it kind a sucks. Unfortunately the next engines in the line are have even further price increase (10000 euros for 30e, 16500 for M40i and just for reference - 35000 for X3 M).

I see some stats claiming such possibilities (increase just with software) but would love to check with someone here with more knowledge than me

Not sure how real that data would be but on few sites they state hp/nm close if not even higher than stock 30i are achieved with piggyback.

I was going to say that normally there are always physical differences between the same engines with different factory power outputs but I'm not so sure in this case.

According to realoem the 2.0 and 3.0 petrols share the same injector, turbo and inlet manifold part numbers.

You made me wonder about it and I check RealOEM as well.

Most of the parts are identical between 20i & 30i including flywheel, gearbox, brakes, all pumps, injectors & rail, radiator, intercooler as well. The difference that I saw is output shafts (rear ones only) and pistons & engine due to the compression difference I guess - 11 ratio for B48B20A (20i) vs 10.2 ratio for B48B20B (30i).

What software tunes you might recommend guys - Bluespark, DTUK, RaceChip, JB4 (I liked that on my E92 335i )? Or there are better solutions (warranty friendly ones please - no proper remaps )?

Isn’t boost pressure also different? It would mean different turbo or turbines within the turbo housing.

Boost pressure is of course higher (this is one of the key factors for higher hp/nm). But the turbo itself is identical

The following is from Wikipedia, the high BHP 2.0i in new M135i and Mini has the lower compression ratio different pistons, turbo, etc, but all other power outputs are the same engines and ancillaries. I'm planning a ECU remap from Celtic to take my 20i to same output as 30i.

Compared with its N20 predecessor, the B48 uses a more undersquare design. As per the N20, the block and head are made from aluminium. Other features shared with the N20 include a twin-scroll turbocharger, direct injection, variable valve lift (Valvetronic) and variable valve timing (Double VANOS).

Models
Power Torque Years
135 kW (181 hp)
at 5,000–6,500 rpm 290 N⋅m (214 lb⋅ft)
at 1,350–4,250 rpm 2016–
141 kW (189 hp)
at 4,700–6,000 rpm 280 N⋅m (207 lb⋅ft)
at 1,250–4,500 rpm 2014–
165 kW (221 hp)
at 5,000–6,500 rpm 310 N⋅m (229 lb⋅ft)
at 1,400–5,000 rpm 2016–
170 kW (228 hp)
at 5,000–6,500 rpm 300 N⋅m (221 lb⋅ft)
at 1,250–4,800 rpm 2015–
185 kW (248 hp)
at 5,200–6,500 rpm 350 N⋅m (258 lb⋅ft)
at 1,450–4,800 rpm
190 kW (255 hp)
at 5,000–6,500 rpm 400 N⋅m (295 lb⋅ft)
at 1,550–4,400 rpm 2016–
225 kW (302 hp)
at 5,000–6,250 rpm 450 N⋅m (332 lb⋅ft)
at 1,750–4,500 rpm 2019–

135 kW version
When combined with the electric motor, the 330e and 530e overall output is 185 kW (248 hp) and 420 N⋅m (310 lb⋅ft)

Applications:
2015–2019 F30/F31/F34 320i
2016–2018 F30 330e
2016–2019 F20 120i
2016-present F33|F36 420i
2018–present G01 X3 xDrive20i
2019–present G20 320i
2019–present G20 330e
2017–present G30 530e

141 kW version
In the MINI Cooper S, a temporary overboost increases peak torque by 20 N⋅m (15 lb⋅ft) to 300 N⋅m (221 lb⋅ft).

Applications:
2014–present F56 MINI Cooper S B48A20A
2015–present F22 220i
2016–present F48 X1 20i
2017–present F39 X2 sDrive20i
2018–present G29 Z4 sDrive20i

165 kW version
2016–2019 F20 125i

170 kW version
2014–present F56 MINI JCW Hardtop and JCW Cabrio (320 Nm)[9]
2017–present F56 MINI JCW Clubman and JCW Countryman ALL4 (350 Nm)
2015–present F22 225i
2016–present F48 X1 25i/28i
2017–present F39 X2 25i/28i
2019–current F44 228i Gran Coupé xDrive

185 kW version
2015–2018 F30 330i
2015–2019 F31 330i
2016–present G30 530i
2016–present F22 230i[10]
2016–present F32/F33/F36 430i
2018–present G01 X3 xDrive30i
2018–present G02 X4 xDrive30i
2020–present G01 X3 xDrive30e (PHEV Version)

190 kW version
2016–present G11 730i/730Li
2017–2019 G11 740e xDrive/740Le xDrive (combined with 82 kW electric motor for total output of 240 kW)
2017–present G32 630i
2019–present G20 330i
2019–present J29 Toyota Supra (Japanese SZ-R models)
2019-present G29 Z4 Sdrive30i

225 kW version
This engine features a reinforced crankshaft with larger main bearings and new pistons with a lower 9.5:1 compression ratio. This allows the engine to take more boost pressure from a larger turbocharger, which blows compressed air through a reworked intake tract.[12] Revealed in May 2019, this engine is shared with the new MINI Countryman,Clubman JCW and MINI JCW GP models. Increasing from previous outputs by as much as 55kw/75hp and 100nm to 450nm.

2019–present F39 X2 M35i
2019–present F40 M135i xDrive
2019–present F54 Clubman JCW
2019–present F60 Countryman JCW
2019–present F44 M235i xDrive Gran Coupé
2020–present F56 MINI John Cooper Works GP

Most of the parts including injectors, turbocharger, wastegate, crankshaft, rods, piston, valves are identical. So it seems the only difference is in the software, which makes the pricing difference between the 20i and 30i even more hilarious.

Be careful.
The lower compression ratio is really vital in order for the engine to be able to handle the increased boost pressure from the turbo charger.


Turbo engines run lower static compression ratios to increase the amount of power they can reliable generate on pump gas.
Increasing the static compression ratio greatly increases the temperature of the air:fuel mixture. The increased mixture temps increase the chances of detonation as well as pre-ignition.
By lowering the static compression ratio from 10:1 to 8.5:1 you are going to reduce the mixture temps.
The lower temperatures allow you to run more ignition timing advance, which makes significantly more power than increasing the compression ratio in a turbo engine.
Most OEMs have developed cam phasing (VANOS, AVCS, etc.) to improve the dynamic compression ratio at lower loads. My Subaru WRX STi can increase its compression ratio by a full point (i.e. 8.3:1 → 9.3:1) by advancing the intake cam.
This is known as “torque fill” and helps to get better driveability, economy, and emissions performance out of the lower static compression.

Credit: Alan LaFrance, Owner / Author at Come and Drive It

Indeed, everything in the 302hp B48 is different for a reason.

My plan was to take my 20i (181hp) to the factory output of a 30i (248hp) and no more.

Although Celtic Tuning sell a re-map to take output from 181hp to 278hp I wouldn't want to go to this as it's getting too close the 302hp B48 which as said is completely different inside to take the stress of the higher output.

andrew0871 wrote

Indeed, everything in the 302hp B48 is different for a reason.

My plan was to take my 20i (181hp) to the factory output of a 30i (248hp) and no more.

Although Celtic Tuning sell a re-map to take output from 181hp to 278hp I wouldn't want to go to this as it's getting too close the 302hp B48 which as said is completely different inside to take the stress of the higher output.

My idea exactly. If we can do 40-50hp to became 230-240 - this is absolutely fine. Pushing it to 270-300 might be too much heat-wise indeed...

Rain, did you tune your car at the end? I'm waiting for my new X3 at the moment and I have exactly the same question as you.

Rain wrote

Hi guys,

Keeping in mind its the same engines does someone have more info what are the differences? Is it only the software (ECU map) or it have better IC, chargepipe, etc.? If its only the software is there an option for piggyback or something similar to increase the power but not void the warranty (easy to remove non flashing I guess)?

I'm asking that since the price difference for me is more than 6000 euros and if its for the same thing just the software - it kind a sucks. Unfortunately the next engines in the line are have even further price increase (10000 euros for 30e, 16500 for M40i and just for reference - 35000 for X3 M).

I see some stats claiming such possibilities (increase just with software) but would love to check with someone here with more knowledge than me

Not sure how real that data would be but on few sites they state hp/nm close if not even higher than stock 30i are achieved with piggyback.

Intercooler part:
G01 20i/25i: FMIC with direct air cooler, like B48A20
G01 30i: TMIC with indirect water cooler

Turbocar wrote

Rain, did you tune your car at the end? I'm waiting for my new X3 at the moment and I have exactly the same question as you.

Not yet. For now I'm kind a afraid of losing warranty

Did you tune yours? Should be able to hit anything between 240-280 hp if all the info from the mappers is correct