Okay, explain what you meant by nothing is wasted now you have a dump valve on? Do you actually know how they work and what there purpose is? If you read the thread you will see ive already told you what my car made on a rolling road after remap.
If your mapper is managing to get it to peak at 200bhp so early i would change mappers personally. You should not get anywhere near this on a standard turbo. If you put an abarth/bravo 150 turbo on then you should be around the 180bhp mark or higher.