2008年4月15日 · Re: Understanding the N75 valve, schematic with details and connections (zeusenergy) Here's some more info. The cutaway is from VW/Bentley I think. I marked what the parts are there for easier understanding. And the duty cycle of the N75 is courtesy of kaipyroami in one of the other threads about the N249 with tons of info here:

2002年7月29日 · Here comes the N75 valve. The N75 valve is inserted between the turbo's high pressure output and the wastegate. If the turbo would directly linked to the wastegate, it would not be able to produce lets say more than 0.3-0.4 bar of …

2007年9月20日 · When operating normally, the PCM sends a PWM (pulse-width modulated) signal to the N75 that opens the valve a certain degree, allowing some bleed and some pressure -- a fraction of the manifold pressure -- to be seen by the WG actuator Because the WG actuator only sees part of the boost, it's possible to have manifold pressure higher than the ...

2002年11月10日 · The N75 valve is inserted between the turbo's high pressure output and the wastegate. If the turbo would directly linked to the wastegate, it would not be able to produce lets say more than 0.3-0.4 bar of boost, because it would shut itself down immediately.

2004年8月31日 · Re: N75 Review F,J, and K valve (AXIS) The stock F valve (and C valve on Audis) are good to about 1 bar (15 psi). After that, they both get bouncy (surging). J and H are smooth above 15 psi, though I sometimes see a little bounce between 5 and 10 psi with the H valve I now have in.

2017年8月3日 · 1)I can tell you that the bracket 10mm bolt does not let the n75 valve loose. 2)The two n75 bolts are T25 and aren't on there very tight. I got the first one off from above but the second will most likely need to come off from below. 3)Even IF I get this thing off getting the bolts back in to install the new one will be a HUGE PITA!

2016年9月1日 · New-to-me Mk2 w/ an early 1.8T swap. All stock. As I've done on several other brands of vehicles that use a solenoid to control wastegate pressure, the first mod I am planning to do is to bypass the boost control solenoid (you call them N75's here) and run directly off the wastegate for boost pressure, adjusting the rod to approximately 11 ...

2016年11月20日 · It can be called many things, such as the N75 valve, but it's job is vital to the health of your turbocharged engine. Sadly, these valves are prone to failure in many Volkswagen and Audi models, but thankfully, when you buy from ECS …

2013年4月1日 · Since swapping to the leaky N75 eliminated the boost swing, it further confirms my suspicion that the combination of N75/tune/turbo/manifold results in a 'resonance' condition. But swapping in a potentially different stock N75 from my 2.7T did NOT eliminate the boost swing (but changed it somewhat).

2004年3月13日 · N75 (ECS) Valve - My Experiences I just wanted to post this to add to the database. I received my N75H (edit) valve (ECS Racing Valve) that I purchased from a fellow Vortex'r (ab8349 - Thanks man ! ) I installed it this afternoon and tested a little on the way to work. I own a 03 GTI 5 speed...