MSefi.com read only forum (Jan.15,2018)

It is the current msq that is more important for where you are now.

The 2.88 firmware you were on is very well supported by TunerStudio, that msq loads right up, you just need to set your project specific settings that MegaTune doesn't save to the msq. However, if you went switched MS2Extra ...

Here are the final two datalogs. I had to put them both in individual .rar files as they were both too large to upload.

Here is the current tune and a few datalogs

Ok cool, thank you for the info! I will do my research and try and get everything figured out. I have included a few tunes that have been adjusted and modified in an attempt to fix the problems. They go in order of "Retry" then "Firmware Re-Tune" and the actual current tune is labeled "CurrentTune ...

"Pre-Smog 042413" is the previous tune that was setup in MegaTune. It was unchanged for a very long period of time, but it was the tune that was loaded when the 4,000 RPM problem began. In MSQ Info in MegaTune, it says that the Megasquirt Signature is MSII Rev 2.88600. I uploaded the latest firmware ...

So I'll start off by explaining what engine I am working with and my problem. I have a 1990 Volkswagen Jetta with a 2.0L 16V engine running MSII with a v3 board. I started experiencing a strange problem a couple weeks ago where my engine would bog down at 4,000-4,500 RPM no matter what load or ...