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Title: Hopefully easy turbo prob
Post by: RXphil on May 22, 2008, 10:00:38 PM

My FD boosts fine through the 2 turbos except:-

Say i accelerate in 2nd gear all the way to red line( still have prob if i shift early tho)

I change to third gear and no boost at all

If i change to 4th i get full boost again

or if i stay in third and let off throttle to bout 25% ill hear a noise that sounds like a "whoosh" if i throttle then i get full boost

All help appreciated

Title: Hopefully easy turbo prob
Post by: pigeon on May 23, 2008, 09:50:00 AM

sounds kinda like your vacuum chamber is not maintaining vaccum under boost. have a look at the check valve supplying vacuum to the vacuum chamber.

http://www.turborx7.com/images/Technical/vacuum_hose_diagram2.jpg

Title: Hopefully easy turbo prob
Post by: mread4 on May 23, 2008, 05:39:12 PM

I have got the same problem. This weekend will be swopping all vaccum pipes and check valves, so will post with the results early next week.

Title: Hopefully easy turbo prob
Post by: RXphil on May 26, 2008, 06:11:32 PM

Cant wait mate :3gears-lh

Cheers

Title: Hopefully easy turbo prob
Post by: DC-TYPER on May 26, 2008, 06:13:26 PM

i had this, blocked cat in the end

Title: Hopefully easy turbo prob
Post by: mread4 on May 26, 2008, 06:18:30 PM

got a race cat so nice and free flowing.

Title: Hopefully easy turbo prob
Post by: RXphil on May 27, 2008, 07:24:44 AM

And i havnt got a cat, thanks tho

Mazda Rotary Club

General => General Technical => Topic started by: RXphil on May 22, 2008, 10:00:38 PM