any 1 no why my boost is dropping it gets upto 1.2 bar then after rpm gettin up to around the 5500rpm mark it starts to drop down to 0.5 bar and a little under could this have summit to do with the waste gate as iv put a 20g turbo housing on and wheel could the bar fitting on to the turbo waste gate were the circlip fits be wrong ???

any help would be great

 

[QUOTE=bazo440bhp;7534152]any 1 no why my boost is dropping it gets upto 1.2 bar then after rpm gettin up to around the 5500rpm mark it starts to drop down to 0.5 bar and a little under could this have summit to do with the waste gate as iv put a 20g turbo housing on and wheel could the bar fitting on to the turbo waste gate were the circlip fits be wrong ???

any help would be great

 

What boost should the car be running and what car is it?

I've been thinking about it and it could be a couple of things. It could be a weak actuator, something that has changed the airflow and the car isn't mapped for it or it's going into limp mode. If you give us more details on the model and spec it'll make it easier to diagnose what is causing it.

 

now then paul its a subaru uk 2000 on a p reg with a 2.5 block with ported ports, fmic,full stainless from the engine,20g turbo just fitted with a new waste gate,440cc inj,fuel reg,walbro 255 and type ra ecu with a remapable chip board but iv not had it remapped to my car yet!!

i might try my old wastegate on c if that makes a diff

hope u can help me

 

[QUOTE=paulpalmer;7534491]What boost should the car be running and what car is it?

also that chip board is from scoobyclinic in derby scoobyecu i think it said on it wen i opened it up