what is the best o2 housing for my turbo setup? the one the HF manifold or the 02 housing off the dsm downpipe? and also what would give me best reading on my air fuel guage?? give me some advise please.. thanks

 

nobody can help me out??

 

Either or is fine.

Just put it where ever you want. It won't make a difference either way.

 

I've read that you dont want to put your O2s upstream of the turbine as the pressure there will cause distortion in the reading. Any WBO2 manual will say something to that affect. I don't know for sure that it'd make any difference in your case, but since you have the choice i'd put it in the downpipe...