Was just having a nosey in the Mk3 section, and they are taking about changing the n75 valve.
Anyone done this on a MK4 yet?
Anyone done this on a MK4 yet?
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not heard of people changing it, but i have read of a few people...rash and gazjones spring to mind off the top of my head who have bypassed this valve completly
this is what im wanting to do but am not 100% sure on exactly what i have to do as i no you have to bridge circuits to trick the ECU into thinking its still there
this is what im wanting to do but am not 100% sure on exactly what i have to do as i no you have to bridge circuits to trick the ECU into thinking its still there
No Jay thats the N249 valve, which i've bypassed as aswell. Very easy to do just need an extra T or Y splitter for the hoses.
N75 controls the wastegate.
Also don't do it on a standard plastic bosch dv, you need to uprate the dv to a nice forge one, before bypassing the n249 valve.
N75 controls the wastegate.
Also don't do it on a standard plastic bosch dv, you need to uprate the dv to a nice forge one, before bypassing the n249 valve.
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my mistake!!! lol
i've already uprated my dv to a forge recirc valve. have got a diagram of what to do, but am still confused. but will stop hijacking your thread now!
does it hold boost better or anything like that?Quote form ECS Tuning:-
The N75 is the VW/Audi part identification number for the wastegate by-pass regulator valve. This valve is responsible for controlling the movement of the pneumatic actuator which drives the wastegate. The wastegate is an internal valve in the turbo-charger which controls the amount of exhaust gas that flows over the turbo impeller generating boost. Under normal operating conditions the engine's ECU sends signals to the N75 valve asking it to open or close which adds or reduces pressure on the wastegate actuator which results in more or less boost. The ECS RACE N75 valve modifies the normal operating parameters of the original N75 valve by delaying the speed at which these ECU signals are interpreted. The result is a higher initial peak boost and an elevated boost curve which tapers back to stock/chipped levels over the engines rev range. Average boost gains are 1-3psi over the rev band.
The N75 is the VW/Audi part identification number for the wastegate by-pass regulator valve. This valve is responsible for controlling the movement of the pneumatic actuator which drives the wastegate. The wastegate is an internal valve in the turbo-charger which controls the amount of exhaust gas that flows over the turbo impeller generating boost. Under normal operating conditions the engine's ECU sends signals to the N75 valve asking it to open or close which adds or reduces pressure on the wastegate actuator which results in more or less boost. The ECS RACE N75 valve modifies the normal operating parameters of the original N75 valve by delaying the speed at which these ECU signals are interpreted. The result is a higher initial peak boost and an elevated boost curve which tapers back to stock/chipped levels over the engines rev range. Average boost gains are 1-3psi over the rev band.
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