friend of mine had some trouble with his T25 on his ST escort with STG1 MSD kit.

he had decided to replace his broken t25 by a T3...

before he had near 20 psi of boost and now with the t3 fitted he can't have more than 10 PSI....

he had verified hoses, he had changed the waste settings, he had test with and without double pistons dump, but always 10 psi ...

do you have an idea ?

 

does the car rev correctly?

 

yes, all is fine ..

 

have you checked for an air leak?

the t3 you fitted, is it brand new? maybe the wastergate penny is not sealing properly? i have heard of this happening before

 

is the actuator working correctly? if so, has it been adjusted properly to run more psi?

 

friend had seach leaks and had tested differents wastegate setting , not more than 10 psi

 

it could be the wastegate penny is not sealing properly in the exhaust housing

 

try putting a bleed valve on it to see if it makes a difference???

 

he had bought a new chip from stu perhap's it will solve the problem