ive been told that the t-25 and the tdo5(14b) are super small so they dont hold @ high rpms....

i am planning on boosting my d15b7 and redline is @ 6500RPM...

will a t-25 or a 14b be able to hold 7-10 psi all the way to redline?

 

yes

 

I'd go with the 14b since it's a little bigger then the T25. Both are good sizes for a 1.5.

 

so they are both good till redline?

 

personally I would go with a t25, you'll have instant spool, I also have a d15b7and just picked up a teo4h off a crysler.