again and sorry of I missed it but is this WHP or engine power?
"The car produced 475hp at the flywheel and 340 ftlb torque."
The TP's will cause you to have lower boost as said before but the WHP numbers shouldn't be down? You should be making the same power just at lower PSI,
Only thing I can comment it why TP's? I stayed with the stock cats and made over 450WHP( 457) but I changed some things and one of them was not the pulley. I would toss the stock cats back on , unless you want to keep the boost down under 10 since it seems a some of us had issue with engine failures with PSI over that. I did :/
And Why did you move the charge pipe? I didn't have any idle or off throttle issues and had an upgraded BPV. I did how ever have UPREV MAF's tho.
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14 Q50 AWD, ARK, ECUTEK (SEB), Takda, 
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