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If you want it to spool earlier, stick with the factory turbo and get a catless downpipe or high flow cat and a full 2.5" exhaust, and a tune.
 

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Do you have RPM numbers for that setup?
It's good for spooling about 300-400 rpm earlier. Mash the throttle at 2500 rpm and it's near instant full boost.
 

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How complicated would it be to make our cars a twin scroll setup? That’s the fastest spool no?

Man, an N54, N55 or B58 would make for an awesome swap job!
 
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