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Bmw B38 Dyno

By the Editorial Staff

March 24, 2026

BMW 118i B38 Dyno Test - 134bhp/136hp Performance Tuning
BMW 118i B38 Dyno Test - 134bhp/136hp Performance Tuning Image via bluesparkautomotive.com
BMW 118i B38 Dyno Test - 134bhp/136hp Performance Tuning
BMW 118i B38 Dyno Test - 134bhp/136hp Performance Tuning Image via bluesparkautomotive.com

Another great rolling road dyno test here, with this BMW 118i after we installed our Bluespark 3 Channel Pro Petrol chip tuning box. The allure of German engineering is exemplified in the BMW 118i, particularly the 2019 model with its B38 engine, something that we have worked with and tuned many times here at Bluespark HQ. A detailed look at the BMW B38 three-cylinder engine, covering reliability, efficiency, tuning potential, and the models that use it.

BMW S38-B38 final dyno 333rwhp - YouTube
BMW S38-B38 final dyno 333rwhp - YouTube Image via www.youtube.com

Another great rolling road dyno test here, with this BMW 118i after we installed our Bluespark 3 Channel Pro Petrol chip tuning box.The allure of German engi. The JB4 is the most advanced and highly featured tuning system available for your B38, B46, and B48 powered BMW. Power gains are up to 40hp to the wheels (55hp crank) for a B48.

3 Silindir BMW Ne Kadar Hızlanabilir ? / Dyno ve 100-200 hızlanma / BMW ...
3 Silindir BMW Ne Kadar Hızlanabilir ? / Dyno ve 100-200 hızlanma / BMW ... Image via www.youtube.com

Guide to Tuning the BMW B38 Engine "All you need to know about tuning mods and performance parts on the BMW B38 engine!" Introduced in 2013, the B38 is part of BMW's modular engine family, signaling a departure from conventional powerplant design philosophies. The successor of the N13 engine comes the B38 engine, coming as a 3 cylinder 1.5 turbo. This engine comes in various models of the BMW range badged as the 18i commonly on the F series facelift LCI models & G series.

BMW 118i B38 Dyno Test - 134bhp/136hp Performance Tuning
BMW 118i B38 Dyno Test - 134bhp/136hp Performance Tuning Image via bluesparkautomotive.com

Being 1 cylinder less than the previous N13 doesn't phase this newer variant still hosting a huge potential in tuning. Stage 1 Tuning 170BHP / 300NM (99RON ONLY) Stage 2 Tuning 190BHP / 330NM (99RON ONLY) Requires Downpipe and Intercooler. BMW i8 B38 TUNING.

BMW 118i B38 Dyno Test - 134bhp/136hp Performance Tuning
BMW 118i B38 Dyno Test - 134bhp/136hp Performance Tuning Image via bluesparkautomotive.com

Tuning a car is a delicate thing. Whether it's an ECU remap, a new turbo or a full-on stage three tuning, you need to make sure each component is working at optimal efficiency under careful supervision of a sufficiently smart engine management system. The JB4 is the most advanced and highly featured tuning system available for your B38, B46, and B48 powered BMW.

BMW B38/B46/B48/B58 JB4 Tuner - NV Performance
BMW B38/B46/B48/B58 JB4 Tuner - NV Performance Image via nvperformance.co.za

Power gains are up to 40hp to the wheels (55hp crank) for a B48, gains with bolt-on parts, higher octane, E85 mixtures, and larger turbos are even higher. We review and look at B38 tuning and provide tips on the ultimate modifications. BMW B38 are good project engines and with the ultimate uprated tuning mods like remapping, turbo kits and camshafts you will substantially increase your cars bhp.

BMW B38/B46/B48/B58 JB4 Tuner - Burger Motorsports BMS-JB4-B345X-FGX ...
BMW B38/B46/B48/B58 JB4 Tuner - Burger Motorsports BMS-JB4-B345X-FGX ... Image via www.znmperformance.com

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