Impreza2RX7

I just replaced all of my vac lines with silicone ones, I'll let you know how it goes w/o the restrictor..

WAYNE88N/A

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

HAILERS

ORIFICE

PART NUMBER: 139868

GOES INTO HOSE PART NUMBER: 935104

PAGE 2-J15 AT THIS PLACE http://www.mazdaformance.com/rx7parts.htm

Impreza2RX7

I'll do that Wayne, I doubt it does much at all, hence why I'm trying it..

Kenteth

damn you're the man

wozzoom

You might not notice a difference without the pill, but believe me when I say it is absolutely necessary. I had my car on the dyno at K&D Rotary about 3 weeks ago. During my first couple of runs the A/F numbers were jumping all over the place. The A/F graph looked like a seismic readout from California during the “Big One”.

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.

Kenteth

Thanks Hailers! Yes it took me this long to finaly get my but in gear and order the damn part. FYI for everyone who stumbles on this thread:


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

\

Kenteth

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.

HAILERS

I'll do better on the part numbers next time. Right page though.

Kenteth

No worries, still woulda been a pain if you hadn't had the page number Thanks

fstrnyou

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.

inflatablepets

Thanks for the link.