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Trevor I think what I will do is put the car climbing the same hill at the same rev's, at the same time and see what the maxium number I get at each test points, that should work out pretty close. What would be interesting is if we took a reading at the throttle body (maxium loss) then removed the exhaust and see if the vacuum increases, which should mean the car is taking more air.
I had to purchase a second gauge that would read high enough. This one will read -100 Kpa or -15psi. If our intakes are above that we have real problems. What I have read says should aim below 8 psi, the lower the better.
Tony
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1995 - SVX 700,000 K Mine, DMS Struts to lift car 2in. Tyres Wrangler Silent Armor 235/70R16, PBR Radiator. 6 speed with DCCD and R180 rer diff, Heavy duty top strut mounts front and rear. Speedo correction box fitted. New stero (gave up on the old one). Back seat removed and 2 spare tyres fitted for desert driving. ECUTune SC sitting in the box for the next SVX.
1992 - SVX 255 K Wife (Want to stay Married so not allowed to fit SC)
1992 - SVX Pearl with black roof race car roll cauge etc ready to race. Ex Tasman Targa car.
1995 - SVX Green low k mint condiation.
1995 - SVX Rally car, ex Matts car. Now to be used on track.
1992 - SVX red & Black being converted to Mid Engine.
1995 - SVX Red 143,000 bit rough.
Owned 5 others Subaru back to a 1974 1400 GSR.
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