Mazdamaniac if u read what i wrote, then u will understand what'ss it for.

 

I red whut U rote and it be meaningless.

 

 

i thought option mag is in chinese/japanese? if you scan n post we wont understand it

 

its in chinese, yes. but at least people believe what i say.

 

I'm sure we have members that can translate but would there be a good translation for the difference between boost controller and bypass valve?

 

no offence, people means everyone.

here is the pages taken from option magazine.

 

more pages.

 

I would try mounting a cheap camcorder and a light under the hood to record the throttle and bybass valve operation.
That will tell you if one is slow to react to gear changes.

Or - Connect a long branch vacuum line to the bypass valve hose. Route it inside the car with a boost gauge. Then you could observe the operation of the bypass valve.

Edit: It's probably something simple like a restriction in the hose to the bypass valve actuator.

 

I have a artical from a old http://www.banzaimagazine.com/index.htm mag from the UK about the Pee-shoter SC from Blitz P-70 on a MT RX-8. It was made for the non-us market. I'll see if I can find that mag and upload them today.