Hey guys I had a question maybe someone could help with. I tried searching and came up with all sorts of random stuff that didn't relate.

I'm running a V3 SCi Trim Vortech Supercharger at stock boost. I have a AP1 2000 S2000 with the oil jet bolts upgrade. I started noticing this about a week ago and didn't think anything of it but now I'm not sure if something is wrong or if it's normal. Once the engine is warmed up and at idle, my oil pressure usually reads around 20-25 psi. The past week it's reading around 10-15 psi at idle after the engine is warmed up. I checked to make sure that there was no leak around the Greddy Oil Adapter, the oil pressure sensor, V-Tec Solenoid, PCV valve and around the usual areas where oil likes to seep out from. No sign of any oil leaks.

When I'm at idle, it sounds like it want's to sputter from the exhaust tone every now and then. Not sure what's going on. When I'm cruising or in boost everything runs fine. Only when I'm idling. The A/F ratio at idle is 14.7 - 15.0 and in boost at 11.0 to 12.2 constantly. Boost gauge is steady so no belt slip. But the oil pressure reading from the oil gauge is puzzling me. I'm running 3 AEM digital gauges.

 

Was it higher before? My gauge is all wacky now but before it went wacky and started reading 45 psi at idle lol it was at 10-15 psi oil pressure.
That is after driving for 20 minutes or so to really heat the oil up.
Are you sure it was reading 20-25 psi after driving for a while?
Any temperature change? Different oil?

14.7 is where the a/f ratio should be idling and driving when not wot.
Only need to worry about wot for a/f. 11-12.2 is good. My vortech runs as lean as high 12's now. Want it lower but I'll take that for now.

What viscosity oil are you using?

 

I'm running EP Mobile 1 10w30. I just checked it again. Started the car and let it sit there. 20-25ish psi. Then took it for a 5 to 10 min drive after the engine was warmed up. At idle it's bouncing around 14ish - 20ish and sometimes dips to around 10-12 then goes up between 14-20 at idle.

 

That seems normal but if it recently went down a lot could be something else. Mine was normally between 10-20. Would vary depending on temperature outside. If your worried about it try some 10w40 to raise the pressure up a little bit with the thicker oil.
Is cruising pressure good now? See what it is around 3k or so. Think it should be around 70-80 there.