02-13-2020, 02:50 PM | #1 |
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B58 M40i Engine Tuning
I've been hesitating and finally decided to remap (ECU) my Z4 M40i B58 engine.
Measurements on Dyno: - stock: 353 HP / 577 Nm ( vs EU spec: 340 HP / 500 Nm) => engine delivers more power than BMW's official figures. - stage 1: 410 HP / 630 Nm First impressions: The car has gained a lot of agility, especially in the lower REV's. On dry roads it delivers real super-car performance. However on wet roads it can barely handle the engine's power in first and second gear. Fuel consumption has certainly decreased but actually I can't tell to what extend. Because the gear shifts are a little more 'brutal' I'm considering a software remap of the transmission in the near future. Conclusion: If you consider a sportier and more agile drive, i certainly advise a stage 1 remap. Last edited by Belgian_Bimmer; 02-18-2020 at 02:07 PM.. |
02-17-2020, 01:46 AM | #2 | |
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Drives: BMW Z4 M40i
Join Date: Jun 2010
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I found a complete solution in here (especially you are in Europe) https://www.daehler.com/produkte/bmw...z4/z4-g29.html
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02-17-2020, 02:55 PM | #3 |
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Other complete solution: https://www.ac-schnitzer.de/en/bmw/z...-roadster.html
Car keeps BMW warranty with AC Schnitzer parts, which is not the case with most other tuners.
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BMW G29 Z4 M40i - Black-Sapphire Metallic - Vernasca Cognac Seam Grey Previous: 325i coupé (e36) - 520D (e60) - 530D xDrive (F10) |
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