Cody Strife

As many of you already know, I have gone to hell and back to try to get the autometer wideband oxygen sensor to give good readings. I have never known of any supercharged s2000 that could effectively pull smoothly to redline at 17:1. So i don't know what is going on, but i'm going to get to the end of this. I need some recommmendations on a testing tool so I can verify my walbro and comptech adjustable fuel pressure regulator is working well...

Who knows... I hope I haven't already done engine damage already if it has been running 16:1-17:1 full boost for the past 3,000 miles.

siadam

I'd get another wide and for one. Most auto meter products I've seen are junk, unless your talking about the high end stuff.

I bought a Marshall fuel pressure gauge, anything is really decent, just make sure it's liquid filled.


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RAIN H8R

I just bought and installed an autometer ES series wideband gauge to run with K-Pro. I wired it correctly and it works fine. Perhaps you wired it wrong?

Summit has gauges you can buy. But what rail re you using? You can drill and tap your factory rail.

Cody Strife

No... I don't believe I wired it wrong

sohc_mshue

If your car is pulling smooth to redline at a 17:1 afr then I can promise you the wideband is reading incorrectly and it is not a fuel delivery problem. Look for leaks around the wideband sensor or before it in the pipe. Is your downpipe bolted tight?

Cody Strife

No... I don't believe I wired it wrong

vividracing.com

Yeah, I really doubt that you're at 17:1 @ redline. Check your wiring (even though you say it's good, double check... I've overlooked small things before), check for exhaust leaks, and test the sensor.Here's a video on how to test an AEM wideband O2.

For the Fuel pressure gauge, we offer a bunch. http://www.vividracing.com/catalog/a...+gauge&x=0&y=0

steven975

yea, I'd think you'd have popped the motor long ago if it was really 17:1.

Anyway, I used this one. Directly replaced the bolt on the fuel rail on my SOS kit...Comptech should be the same. There's a sticky with this exact gauge, too. I got a gauge and used it solely to verify the function of my FPR/pump. The pressure takes a split-second to rise when the boost hits, so I'm going to wire up the pump directly to the battery through a relay.

I wouldn't close the hood with it on, though. Fortunately, it is FAST and easy to mount it for a dyno session.

http://www.amazon.com/46054-Fuel-Pre...1820490&sr=8-1

I also got one of these as I'm considering mounting the gauge permanently on that 3/8" line to the regulator. haven't done it yet.

http://www.amazon.com/Mr-Gasket-2975...gy_auto_text_b