Any Nissan ITB Gurus Here?

[wgknestrick]

I need some information about Nissan and how they handle vacuum connections on their ITB turbo engines (RB26DETT and "black top" - I think SR20's).

I basically need to know what they separate from the MAP sensor connections, Do they run speed density?, brake booster, etc. If you have any good links describing their ITB systems that would also be great.

Any help is greatly appreciated for a Subaru guy


Bill

[Honest_Bob]

You should be able to find anything about the sr20 at www.sr20forum.com

[Ender81]

You're like an evil genius

[Specnomore]

The only sr20 I know of with ITB's is a Gti-r engine. They still use a maf based system though. Pretty much all the vacuum sources are behing the throttle plates on each port. There are some guys who have converted over to map and speed density, but they used the AEM ems systems.

[the mike]

I know the guys that did ITB's on NA KA24 cars used a MegaSquirt to control the engine, and that the MAP was located in the board(provided that I read the writeup correctly). As far as running it on other systems, I have no idea.
They used GSX-R 750/1000 ITB's for the setup and I think they use one port for each fed off a main feed with one fitting on the end. This is where they ran the vacuum for the brake booster as well. I'll try to find the article.

[the mike]

Found the write up I was looking for...
http://www.zilvia.net/f/showthread.php?t=91288



http://www.zilvia.net/f/showthread.php?t=109523&highlight=GSXR