I changed a majority of my vac lines recently and everything sees to be running fine. I just saw a post that suggested there is a restrictor pill in the factory va boost line. I did not see this pill? Is this inside the stock line or is it obvious? I am thinking I am running without this pill now and may need it.
Some insight here would be appreciated.

 

Yes, it's in the vacuum line.
If you pinch the hose along the length, you should feel it.
If that vacuum hose has been replaced, then it's probably not there.

This is just to dampen the vacuum signal to the boost sensor.
It's just to prevent premature triggering of the overboost fuel-cut.
It looks like you don't have to worry about that (RTEK mentioned in your .sig), so I wouldn't worry about it.


-Ted

 

In case you need it, the part no. for the pill is 8931-13-986.

 

I am getting some wierd hesitations though when at WOT. I will get one and try to see if it softens this out.
Thanks for the info....I just searched a bit better and found the part number info previouly posted.

The orifice (restrictor pill) is the same for both s4 and s5 models.
Lable: "Orifice"
Group number is 139868
Mazda P/N: 8931-13-986
Price as of 28 Feb 05: $2.00

 

You can make one out of anything that will fit snugly into the vac line. Drill a 0.5mm (0.020" )hole through it and you're done.

 

The WOT mis-fires are probably caused by something else:

1) Worn out spark plugs or wires.
2) Loose injector connector.
3) Low or erratic fuel pressure from the pump, pump wiring, pickup strainer, fuel filter.
4) A bad spot in the sweep of resistance values from the TPS.