N75 backing off the boost

[ggggolfgti]

i wouldnt recommend flooring it when youve clampe the actuator off mate that on its own can burn your turbo out

[DarkGti]

id say faulty n75 valve then

[gti_shaun]

you say you clamp off the actuator pipe?? have you floored it at high revs when clamped?? did it still hold boost?

do you have a boost gauge?? what boost did it hit when clamped off just curious

well went on test, and it backs off boost still with the actuator pipe clamped if not quicker, will this be because the engine cant use the boost so the wastegate gets forced open with the exhaust gases.

[gti_shaun]

id say faulty n75 valve then

brand new n75 valve f, which valve you run?

[DarkGti]

the f valve, i had all of them c,f,h,j,k and the f gave the best results

[gti_shaun]

the f valve, i had all of them c,f,h,j,k and the f gave the best results

#

cool, glad i stuck with the standard one then, whats your boost hold like and go to now, is it always sameor do you find it feels that bit faster when its hot weather? i had like 2 weeks of my car being rapid after map, its been nothing but trouble since then, it getting there now i would like to thing as before new n75 it was only getting 18psi at best now its 21psi but drops as revs rise, its really annoying me now.

[DarkGti]

ive got a boost leak at the moment but i used to hit 22psi then drop off to 18psi then hold, it is a stage 1 remap youve got? if so then i dont think you should be hitting 21psi maybe turbo problems?

[gti_shaun]

ive got a boost leak at the moment but i used to hit 22psi then drop off to 18psi then hold, it is a stage 1 remap youve got? if so then i dont think you should be hitting 21psi maybe turbo problems?

stage 2 remap,225bhp on the day and for 2 whole weeks to.lol. then my maf went then my n75 not what ever this is.

[gti_shaun]

just done some more camera runs watching the actuator and it does not look like the actuator moves when the vac/control hose is clamped off but the boost still drops off form 21psi all way down to about 8-9psi at 6000rpm(2nd gear from 2000rpm) it drops off the boost fasted with the pipe clamped so it would sound like some kind of leak as it has more boost(air) available when actuator cant move so where ever my boost is going or what ever is happening its the same fault just high lighting it more. so im swaying towards a turbo fault, any one got any idea??

vid here http://www.youtube.com/watch?v=0BoCLyzR3SY

[topher]

downpipe off and look for cracks inside the turbo