Pictures of Turbo Possibly going bad

[Doakster]

I'd like to confirm a few things that I've read in the "checking IP pressure" thread, can you tell me if I'm on track with this.

-RPM of the pump should be checked at the drive gear, I'll be using a Laser/reflective tach to do this, RPM of the pump is 1/2 engine RPM

All RPMs I listed are pump RPMs

-IP Pressure @ 500 RPM should be 3 Bar (43.5 psi)
-IP Pressure @ 750 RPM should be 4.1 Bar (59.4 psi)
-IP Pressure @ 1000 RPM should be 5.2 Bar (75.4 psi)
-IP Pressure @ 2000 RPM should be 10.4 Bar (150 psi)

Only question that I can't seem to answer out of that thread is if it matter for a N/A, Turbo, Eco Pump

[Doakster]

The pressures listed are for pump rpm.  It shouldn't matter if it is a n/a, TD or ECO pump.  FWIW, I am convinced that you would actually get the best fuel economy with a larger diameter exhaust and a properly tuned TD pump.  A N/A pump would be second and an ECO pump would come in last for economy.

From what I'm reading that seems to be the consensus. I'm contemplating getting one of Giles tuned TD pumps. Any idea where I can get a 2.5in down pipe?

I assume that most MK2 2.5in exhaust systems will work due to the same body style regardless of diesel/gas.