Originally Posted by
whattadobo
atp quick tap showed up today, boost seems to come in alot sooner.
I am reading +pressure while cruising though, I dont know if thats normal or what.
in the next few days Ill be switching my screamer outlet, for the typical aftermarket outlet. Ill miss it, but itll be nice.
How would a quick tap change boost response?
You're reading positive pressure because you're reading before the throttle body. That is not typical gauge placement. Basically, the turbo is compressing air, which is losing absolute pressure as it cools through the intercooler and experiences head loss across the mostly closed throttle plate.
In other words, positive pressure at turbo compressor outlet is normal in cruise.