Just got a ECS Tuning FPR for my TT. Can anyone tell me if you have to adjust the fuel pressure after you install it or install it off the box

 

For piece of mind, you absolutely should connect a gauge. Want to trust some disgruntled blue collar worker with your pride and joy? Connect a gauge to the filter, that is where the OE repair info says to verify it, then adjust accordingly.

 

Thanks. Ill put in a fuel pressure guage at the filter. Last question, what should be the fuel pressure in psi?

 

+1. That unit goes from 3bar to 5.4 I believe. It's been solid for us for years and I can tell you that adjusted all the way tight or down then backed off about 2/3mm should test at about 5bar. To give you a starting pointy idea.