A mate of mine has just got himself a cheap and nasty turbo off ebay for his Nissan S13.

It doesn't have a take off on the compressor housing so I presumed you would just drill and tap it which I know would work.

However according to a friend of his who has a Norris Designs engine install he has the boost control between the actuator and inlet manifold.

I'm guessing either work but I'd just like to know the reason behind doing it Norris's way.

 

renault 21 turbos have a take off on the hot side pipe from the turbo to cooler could always try it that way

 

cooler charge temps giving consistent air density and less heat for the control valves and actuator to endure .
the air at the turbo can exceed 200 deg C

 

He has no problem with taking it from the compressor housing, I'm looking for a reason why it would be taken from the manifold ?

I suppose the answer may be that it makes no difference at all, I can't comment though as I don't genuinely know

 

I have answered that question for you

 

I posted that after your post Tony but thanks

 

is the turbo externally gated lol?

 

No its not and FUCK ME your avatar is a bit big

 

yes - i know, check my other post