Recently installed my GFB Respons valve - Whenever I let off the gas my Vacuum on my boost guage dips to ~24 then back up to ~19, I don't think it ever dropped below ~20 on the stock DV - any idea what would cause this? I haven't adjusted the spring, didn't think I needed to. Any input would be great, thanks!

 

I'm not really sure but why did you get rid of the stock valve? It'll do fine on the stock turbo and it's pretty damn loud with an intake.

 

Honestly, I heard one in person on a IX and it sounded SOO GOOD. I wanted to do 90% DV and 10% VTA, + the Respons is suppose to have faster response time than the stock DV.