90clipser

I'm still running the best choice for a BOV ther is for my car, factory. But it's been garage modded which eliminated all of my throttle lift surge. I took my compressor housing to a local machine shop and had them do anti-surge porting on it. It got rid of the surge but the flow going back into my intake is upsetting my MAF... Atleast my turbos safe now.

Yeah, I tried the wastegate and it got worse. So I'm guessing like you mentioned at lower rpms so my demand for that kind of flow is just not there. I've been lookin into ways of getting rid of this and nothings really been helping. I was looking at some anti surge housings and I've realized how the turbobygarret page mentioned the porting of the shroud. I'm sure I could get a local machine shop to port it like the turbonetics housings. Would this help bleed of the pressure problem I'm having at lower boost levels and lower rpms? It's not like I'm getting huge amounts of surge. It's really slight. I'm just over the edge of not having any.

OK, I completely understand everything above. But I have one question. I actually own a DSM. Recently I put a 60-1 on the car. Well I was getting surge when I let off the throttle. Fixed most of that problem by changing my BOV. Well now from 2psi to 10 psi I get surge, from 10psi to 15psi I'm not getting any surge. My BOV is recirculated and my MAF is before my turbo, so I can tell when I get the slightest bit of surge from a log through DSMLink. Is there anyway to get rid of this? Would relieveing my wastegate help any? Before I put it on I made sure that it closed completely and it had a snug fit. Also, how would I go about porting the compressor housing like in the diagram on the turbobygarrett.com page? Would that help in the lower boost areas like how I am getting it or would that only help in the higher boost levels? I want the car to be tuned on 25psi but I need to eliminate the surge before I can touch the tune because it's causing inaccurate MAF readings so I can't adjust fuel. ANY information is extremely appreciated and should be very helpful! Thank you.