... fire on the missing compression hump IT DID NOT! so i then attach the WPS 500. Can anyone see a problem in the waveforms or think of a reason why the ECU would fire ...

Hello, I've recently made the purchase of both a WPS-500X as well as the starter NVH kit. I decided to start learning it on issues currently presented ...

... certainly correct about the specified peak operating pressure of the WPS500 at 34.5 bar and therefore in extreme circumstances, the AC pressure could exceed the maximum ...

... was our primary concern when measuring engine compression. With the WPS500x on the scene we are introduced to superior cylinder pressure analysis in the form of positive/negative ...

With the WPS 500 you can definitely check valve opening time in relation to crankshaft degrees. You can compare this to every other cylinder if you dont have a spec to go buy. This will tell you if any of the components that operate the valve are worn/defective

... cold, allow the engine to run for a while and retest. If you have a WPS 500 you can now carry out an Absolute Compression test by placing the WPS into cylinder 1 You ...

Just noticed this one was not completed, i never get a Notification from the Forum, don´t know why.Anyways.... The Problem with this Car "Glowing Cat" was solved with a new Engine ECU. Don´t know what went Bananas in that thing, but with a used one the car drives nice as before but no more extrem He...

Hi this thread is very interesting. I have a wps 500 and this explains so much. This is a fantastically powerful tool. Lots to learn though. So thanks ...

Normally compression pressures follow intake pressures. This capture was made before the WPS existed.

One of the really good things about this forum is you never stop learning and understand something new from an old idea. What I mean by this is; back at college we learned about volumetric efficiency (VE) and cylinder scavenging and when CATS were introduced to us back in the 1980's we were educated...