I recently got my 99.5 1.8t FWD chipped and am only boosting at 11psi. i fixed all of the vac leeks and such. Still only 11psi. I took the hose from the N75 off the wastegate... okay so now it boosts at 18psi and probably higher. what i want to know is does the wastegate need to be replaced or is it the N75 that needs to be replaced?!?! (wastegate does rattle a little when i let off the gas... or atleast i think its the wastegate) Other questions is can i put an MBC inplace of the N75... if No then why not? just wondering because i dont really understand what the N75 does. What is the problem.

 

its the n75, never the wastegate. Yes you can change the n75 for a mbc np. But you need to make sure your wastegate is tight and doesnt rattle otherwise your losing flow to create boost

 

Sorry to jack your thread but I have 1 question...

 

that is the regulator for the pcv. The n75 has a plug and 2 vac lines going into it. It is located just behind that regulator

 

no, thats the pcv valve

 

here is the n75 next to my mbc. You can see i removed the lines for the mbc

 

K thanks, with this leads me to my next question. What is the pcv valve, sorry?

 

cincytt how is it that i can tighten the wastegate? are there any writeup or ...? other question is which MBC should i purchase? would i be better off with MBC or a new N75?

 

thats not the valve, that the regulator for it. It controls the amount of flow back into the intake. It really should be tossed and a catch can installed the moment you buy the car imo

 

I apologize SouRce4 but I have another question. Is it possible to take the Pcv out and just made a coupler and recirculate all air into it?