Is there supposed to be a check valve/restrictor in the presure sensor line?
#27
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It's not hard to get a "visual demonstration"- connect a meter to the boost sensor input at the ECU and go for a drive, with and without the restrictor. We'll patiently wait for your test results
#28
HAILERS
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ORIFICE
PART NUMBER: 139868
GOES INTO HOSE PART NUMBER: 935104
PAGE 2-J15 AT THIS PLACE http://www.mazdaformance.com/rx7parts.htm
PART NUMBER: 139868
GOES INTO HOSE PART NUMBER: 935104
PAGE 2-J15 AT THIS PLACE http://www.mazdaformance.com/rx7parts.htm
#30
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Originally Posted by HAILERS
ORIFICE
PART NUMBER: 139868
GOES INTO HOSE PART NUMBER: 935104
PAGE 2-J15 AT THIS PLACE http://www.mazdaformance.com/rx7parts.htm
PART NUMBER: 139868
GOES INTO HOSE PART NUMBER: 935104
PAGE 2-J15 AT THIS PLACE http://www.mazdaformance.com/rx7parts.htm
#31
Rotary Enthusiast
Originally Posted by Impreza2RX7
I'll do that Wayne, I doubt it does much at all, hence why I'm trying it..
We were stumped until Dave saw that I had silicone hose going to the pressure sensor. He asked if I replaced the “pill”. I said no, the car never had one…so he found one and installed it. BINGO! My A/F numbers smoothed out. I could not believe that a .01 cent piece of plastic could make that much of a difference. With my A/F numbers smoothed out and steady, I picked up 2 peak RWHP.
#32
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Originally Posted by HAILERS
ORIFICE
PART NUMBER: 139868
GOES INTO HOSE PART NUMBER: 935104
PAGE 2-J15 AT THIS PLACE http://www.mazdaformance.com/rx7parts.htm
PART NUMBER: 139868
GOES INTO HOSE PART NUMBER: 935104
PAGE 2-J15 AT THIS PLACE http://www.mazdaformance.com/rx7parts.htm
The orifiace/pin needle thing is teh 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
The hose is also same for both s4 and s5.
Lable: "hose"
Group number 935104
Mazda P/N 9935-10-4999.
Price as of 28 Feb 05: $12.00
\
#33
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Coincidentaly, the "pill is about 1cm by 1mm. Its insanely small. I didn't notice any big change after i installed it, but its supposed to be there, so its there.
#36
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dang, i need to get one of those, usually sputters between shifts when i first hit the gas in the next gear. doesn't do it all the time, but when it does it's annoying as F***. or if i'm in gear and moving steady at a low rpm and suddenly hit the gas, it feels like you do a quick tap of the brakes before it takes off.
#37
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Originally Posted by HAILERS
ORIFICE
PART NUMBER: 139868
GOES INTO HOSE PART NUMBER: 935104
PAGE 2-J15 AT THIS PLACE http://www.mazdaformance.com/rx7parts.htm
PART NUMBER: 139868
GOES INTO HOSE PART NUMBER: 935104
PAGE 2-J15 AT THIS PLACE http://www.mazdaformance.com/rx7parts.htm
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