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420i F36 M Package, pushing 300+hp without damaging the engine
| 05-24-2024, 01:25 PM | #1 |
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Hi everyone, i own a 420i f36 with a b48 as engine, is it possible to tune it up to 300+hp without shortening the lifespan of my engine/damaging it in general? thanks in advance
Last edited by YurisBMW; 05-24-2024 at 01:33 PM.. |
| 05-24-2024, 06:03 PM | #2 |
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Drives: Monaco Blue 335i
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Hi,
You’ll need a tune and aluminum charge pipe. I recommend these: Charge Pipe JB+ Tune With these you’ll safely be around 300 at the crank, provided the rest of the engine is up to date as far as maintenance. I would recommend going through the cooling and ignition system first (all coolant hoses, reservoirs, spark plugs, ignition coils.
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| 05-25-2024, 01:57 AM | #3 | |
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| 08-19-2024, 03:22 PM | #4 |
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I don't think so, I've seen alot of threads about b48b20a engines having weak pistons. The issue seems to be the high compression rate of 11:1 that doesn't alow for safe tuning in general. Even going for 20% more power could be risky.
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| 08-19-2024, 08:16 PM | #5 | |
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B48a20a engine is used in many Mini models and 320i and does have a higher compression ratio. It _could_ be tuned to 260 hp and even that would be a stretch. b48b20b is the engine you want to tune. It's used in 330i and Mini JCW/GP. It has lower compression ratio and stronger pistons. |
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