I'm finishing up my DET insall and I have a question. I am using the intake piping that came with the engine, and I don't know where one hose goes. On the intake piping there are three feed-nipples - 2 large ones (1" or so diameter) and one small one (like 1/8" diameter).

-one large one goes to the blow-off valve, to recirculate it
-one large one goes to the valve-cover oil vent fitting
-I don't know where the samll nipple goes - it is like 1/8" diameter...can anyone help me with this?


Also, I am using the stock piping that goes from the the compressor outlet to the throttle body. Right after the blowoff valve, there is a small tube that runs to the wastegate. Off of this tube there is a tee, that has a small (1/4" diameter) vacuum hose that is about 3" long. Does anyone know what this line is for? Perhaps the stock boost gauge? (If so, should I hook my boost gauge up to this line?)

If it matters, this SR20DET came out of an Avenir. Any help is greatly appreciated.

the little one on the intake piping is for some emissions crap that usually leads to a similarly small nipple on the stock rubber piping, just cap it and the vacuum line off, they are useless.

the tee off your wastegate is probably for the boost sensor or guage, whatever they had in the avenir, run your boost guage there so your wastegate and eyeballs are seeing the same boost signal.

Cool, thanks a lot