View Single Post
      11-17-2019, 01:24 PM   #4
smartbear
New Member
0
Rep
7
Posts

Drives: facelift z4
Join Date: Feb 2014
Location: chelmsford

iTrader: (0)

Quote:
Originally Posted by lucifer_product View Post
The different between 20i and 28i is compression ratio 11:1 and 10:1 .
So max boost in 28i is 22PSI (from data that I found ) and 20i that I monitor is 12PSI
In the uk this is incorrect, all the 2litre turbo z4’s have the 11:1 compression ratio. Check realoem.com and you will see all the engine parts are identical.
Can you post a link to the data you say you found?
Rob
Appreciate 0