my fiesta has had a t3 conversion and the turbo i bought for it has covered all of 1000 miles but now is not holding its boost, its boosting at .75 and faids to .5 around 5500 rpm

can any one please help

will turning the boost up help

and wot can u turn a t3 stage 1 boost too

cheers rob

 

Sounds like it's just not set up.

I'm assumin your measurements are in bar in which case it's peaking at 0.75 (11psi) and dropping to 0.5 (7.25psi) which would sound about correct, maybe a slightly soggy actuator. I wouldn't DIY this at all and get a tuner to set it all up as there is more than just boost pressure to worry about with a T3 as it moves a larger volume of air at any given pressure

 

you cant just turn up your boost yourself as you dont know if its fueling is correct. anyhow turning up the boost wont help! could be a weak actuator
you should be testing this in 4th gear btw