I tried one time, I bocked off the "hockey puck" on the tip and when I tested i, it sounded like fluid was gargleing(if thats how its spelled?) or spitting so I quit. my mileage is about 300 on a tank, I thought I should be getting more.

 

when i tested mine i just hooked it up to the end of the turbo and keep all charge pipes connetcted including to the throttle body i had a leak on the lines on the back side of intake manifold where the line of your dv hooks into and severl else round front mount which you wouldnt have to worry bout and the biggest was my bov and it was only on the car for 2 months pluse u said u think its in limp mode right?

 

my dv seemed ok.. I bought it used... could it be doing this and not throw a code/light?
And yes to limp mode cause I only get 1 or 2 psi..but I don't have a light/code...so I don't know...

 

mine does the same thing no light but when i scan it has codes the code that always throws mine into limp mode is boost pressure exceeded max once i clear it it is fine but i cant run the car with the n75 valve hooked up but it also throws mass g70 pressure high and cam/crank snsor not in complience with ecu im not sure which one puts me into limp mode but none of them throw on the check engien light my gpa has a soluras scanner by snap on and it pickes up every code with or with out light on mayb call some shops that have that scane tool i know the scanners at advanse and auto zone dont pick it up unless u have a check engien light on

 

So the ones at az and advance can't pull codes that don't have a light? What about a vag com with a ebay cable?

 

Ok, I think I fixed my guage. I have no more than 5psi on accel, and 10vac at idle cold and 15vac warm.

 

correct if your gage is reading that i know when my uncle did his mbc he hooked the lines up in reverse and it ran them same nums dont kno if n75 would do same thing?

 

So it that what it is supposed to be?