If it's not really about tuning or wiring. Then it belongs in here.
Looking forcsdvise on turbine housing selection.
Combination is so far.
10 to 1 compression
kelford 184st csms
efr9174.. not sure which housing to select t4 1.05 or 1.45
hello what is the car being used for and what is your aim with it the 1.05 is a large exhaust housing for a street car i would normally use a .82 to give great response the 1.05 would be more for curcuit and the 1.45 for full drag spec
Used for roll racing and some drag racing. Only available in 1.05 and 1.45
With "roll racing", if you aren't using some form of "anti-lag" to spool the turbine, you're probably going to be better off with the smaller option to 'get the jump' on your opponent, if you go for the larger you may have to resort to the 'run him down' tactic.
As it seems you're still in the selection process, I'd suggest having a talk with the tech' guys from the various companies and/or retailers, as the development of turbo's is constantly bringing out further refinements in their performance.
The 'charger is just part of the installation, exhaust manifold and charge cooler can also have a big influence on how the package works.