What would you like me to log for your viewing pleasure...?? I'll use the datalogger hardware/firmware that I built (MMCdroid) with the software that I wrote and hopefully we can get that train wreck on here.

Aaaaand THIS is why I don't post on Tuners anymore.First off, you don't use TunerPro to view logs. Secondly, my fuel trims are -4%, -4%, and -2% (as. I. said.) The voltage for my "hacked up O2", also known as an AEM UEGO in P04 mode, are cycling precisely as they should with corresponding less...

I did forget to mention that the regulator from my (3000GT) VR-4 is an Aeromotive AFPR.I really don't understand why it's hard for you to get that outside of adjusting cruise AFR's and fuel trims, both of which only occur in closed loop, the stock O2 sensor does absolutely nothing - and that...

Yes. I did. That's why listing mods is pointless - there are no mods. As I said, I listed the mods I had done, and also listed the mods I've undone (which was everything). I don't know why it's so hard for you to follow that without looking at a profile. Here's my profile: Stock GVR4. It's...

Stock turbo, stock intake, stock MAF. If BOV was vented, it would (at worst, if it leaks) cause a post-turbo boost leak, which would cause me to run rich under boost.The only reason I don't believe it to be an exhaust leak is because it has no bearing on acceleration... you can literally...

I can repair it that if it requires it for less than you would spend on an EPROM. However, you may want to try just cleaning the board up with acetone and a toothbrush (which will remove the conformal coating) and soldering new caps into it. Test it and see if it works.There's likely nothing...

An EPROM chip can do everything I want it to, since I program in assembly. I can do way more than ECMLink can dream of because I can add and remove code as I wish. In addition, all AEM UEGO widebands have a Nernst emulation mode that's turned on by rotating the calibration dial on the back to...

'92 GVR4. I put 720's on it and an EPROM chip I burned. Was running great. I put a wideband in place of the narrowband set on simulation mode and hooked it to the ecu. A couple days later, it starts running lean under boost and rich at cruise. I immediately think "air leak prior to turbocharger...

Yeah, pulled the head today... redoing the valves.

Which is exactly what I intend to do at this point... either grind the cam lobes, or grind the lifters; Could also grind the roller on the rocker. :-P All of these options would yield my result... lifters are the cheapest option, though, I believe. We'll see what happens. And no, none of the...

So today I replaced the lifters/rockers with known good ones out of an old 1G head. They were my first suspect. Cylinder 1 still has 30 psi of compression; no change. That means that either the springs are too weak to pull the valve closed the whole way vs. the hydraulic lifter (unlikely), the...

To the best of my knowledge, they're stock cams... I, personally, have never messed with them. However, who knows when it's a DSM with however many miles on it....

Lifters were all bled prior to installing into the head

Timing is on. Cyl 3 has 140 psi.

I just finished putting together an engine for a first gen... The head is not known good, thought it passed a hydro test while on the bench with the cams out of it.Cylinder 1 has only 30 psi of compression. This was weird to me, as it passed the hydro test and the rings are new (I expected...