Fix_Until_Broke
Top Post Dawg
Your gauge does not look like it's glycerin filled and the needle movement appears very damped (and the pressure is actually very "not damped"). I'm guessing that your gauge has a very small damping orifice in it that may be slowing the gauge down. It appears slow to respond but without a boost gauge to compare it to it might be hard to tell.Hey Travis, the GTG is outside of LA, you can miss all the traffic =) And it's this coming Saturday hehe.
The lag is obvious, but I also can see if I were to close the vanes more to 3-4psi at idle, my pressure differential would be pretty high but it would be responding more like Hatemi's or yours. I'm sorry I keep beating this dead horse, but I had enough problems with the jeep turbo, I don't wanna over run this one.
I actually did that exact thing where I video'd emp gauge and named off what the boost was hitting. Only problem, the camera washed out the white gauge and it was all a loss.
I'm going to move the emp gauge right next to the boost gauge to show y'all. I did a video of the emp, while I did some wot in 1st to 3rd. That was before I closed the vanes and shortened the rod to where it is now. http://www.youtube.com/watch?v=4U-7FLePWp4
For a quick test - when running at ~3000 RPM moderate load (3rd gear flat to slightly uphill), the EMP gauge should look like it's almost directly connected to your accelerator pedal with very little lag - push on the pedal 50% and the EMP's should rise almost immediately for the spool up spike and then fall back down to ~1:1 with boost.
Here's my 'Dash Daq' video I took a couple years ago with RC6 for comparison.
For troubleshooting purposes, it might be worth it to go to your local Fastenal/Grainger like place and get a couple 40-60 psi glycering filled gauges and put them side by side so you can monitor EMP's and IMP's side by side. They're relatively cheap ($20 or so each). I found that a small vacuum gauge is also helpful to see what the VNT is doing. Once you get used to it you can really get a feel for what is going on with these 3 gauges - kind of like a live VCDS log.
Center Back Mount from Fastenal for ~$23
1-1/2" Dia Vacuum Gauge ~$10 (not filled as the N75 is very smooth and fast)