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Old December 27th, 2017, 04:07   #19
Veteran Member
Join Date: Nov 2005
Location: Great Britain
Fuel Economy: 35-45mpg

Your 11 blade billet wheel must have been a better design to what i have used! To be honest, the 11 blades many have used are slower to build boost from low revs and a lot noisier than 6+6 jobbies however if its nice and shiny they must be better! Efr turbos are a lot different and the upgrades doesnt just end at the compressor side!

Gtx series are better suited to petrol engines as they make boost higher up the rev range! If a billet wheel is designed the same as the cast wheel it replaces but its lighter then it will spool better however there are so many variables and most turbos are upgraded with wheels with different trims and larger exducers too! There are many ways to skin a cat...
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