hello guys,

i have buy a 20g turbocharger for my evo 8 edm. the turbocharger is a base evo 9 charger with the bigger 20g compressor wheel and a larger turbine wheel(td06).

the turbocharger makes surge at high load or pressure about 21psi...what can i do to decrease or illiminate the surge noise?!

 

has your car been tuned for the new turbo?

 

no i have still the stock map! is possible to risolve with a tune?

 

bump for more info. Iam going to get an evo9 20 g turbo as well.

As far as I know and I have been told that you need a tune.