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At your level of tune, there is no significant benefit to uprating the other components*.
You don't need a 3.3bar fuel reg- even at 300hp+, my car is on a stock reg. If you alter it, then it may compromise the ECU mapping.
Likewise there is no need to uprate the wastegate actuator; indeed you may cause problems if you do. The only "uprating" is to incresae the springing, but you can't do that too much without making the base boost too high.
*There may be some benefit upgrading the dump valve if your old one is a bit worn and tired. An atmos will work fine with your car.
You don't need a 3.3bar fuel reg- even at 300hp+, my car is on a stock reg. If you alter it, then it may compromise the ECU mapping.
Likewise there is no need to uprate the wastegate actuator; indeed you may cause problems if you do. The only "uprating" is to incresae the springing, but you can't do that too much without making the base boost too high.
*There may be some benefit upgrading the dump valve if your old one is a bit worn and tired. An atmos will work fine with your car.