What type of power loss will a leaky throttle cause
 

I have a car on an FP Red car use to pull hard but feels lazy as hell now. I even had to change my VE from being in low 100 to low 90s. Is this causing a big power loss for my VE to change this much?

depends how bad the leak it, you should do a boost leak test.

thanks for the quick reply its pretty bad boost drops quickly on the boost leak test...and the boost controler is leaking and not from the little hole in the hallman mbc.....but i eliminated boost controler and throttle leak is big....car feels slow and even had to make big change to my VE

its a stroker car that went from like 105 ve to 91 ve due to boost leak

The throttle body seals are a pretty easy install. I made a pressing tool with a screwdriver and some tape. The first time, I bent them and had to reorder new ones :lol:

if that's where you are leaking, then you have a massive boost leak! Those can leak bad. I couldn't hold more than like 3 psi without them letting it all out

You found a boost leak. You should fix it..