If the low cr have passed is only for co2 and fuel reduction. More cr = more efficiency = less tunability^^
10:1 itās not 11:1 cr max near 13 after detonation.
If you have 9:1 you canāt increased turbo bost +0,2 bar ~+20% of power without any detonations.
Well for the runners we put everything back to the original for technical control.
The police can not open the hood of the car so nothing visible indeed. Stage 2 is perfect :thumbsup:
But in the event of an accident it can cost a lot.
Many countries where the state imposes reductions in CO2 emissions.
People want less fuel consumption.
The x4 M40i look like to the previous b58.
For me itās a x5 M40i engine in the Supra the collector and turbo seem be modified and same cover than new z4.
The new x4 M40i engine 355hp only :dunno:
All spec in https://www.bmwusa.com/vehicles/x-models/x4.html?&origin=bmw_search_brand_google_tier1_national&gclid=Cj0KCQjw2pXXBRD5ARIsAIYoEbd9SLBq_aO35IS6mZf2T8w3tMdDMWrpFHY1lTfpGhv09ZfKne18WqwaAnbREALw_wcB
I do not think so much.
I'm just saying that z4 engine code is already known.
so I show the engine that will output the x5 with this code name.
for the supra it's a mister :dunno: but as the engine z4 and supra seems identical ...
The b58b30 x5 has a compression ratio too high for a sports...
The engine cover are the same as z4 i40m idem for air flow meter sensor.
Perhaps head cylinders and colector mod
For information the EU spec of b58b30m1 x5
I read in several article that bmw confirmed the spec oficially on September 19 for the 4 cylinders and for the auto show in paris for the 6 cylinders.
I have read this for Z4 "But donāt worry, you wonāt have long to wait as the full specification and engine line-up is being revealed on September 19"
There are a special event on September 19?
Extract from https://www.carkeys.co.uk/news/all-you-need-to-know-about-the-new-bmw-z4