Originally posted by svtProdigy:
I will have a full t4 so boost will kick in more around 3500-4000.


I would guess more like 4500 to maybe 5000 with a "full" T4 of any real size. It will take noticeably longer to spool up the larger exhaust housing and wheel verses a T3/4 hybrid. Especially with a low compression engine of only 3 liters displacement.

Also even with a large bypass valve you are still going to have a bit of lag after each shift trying to respool the larger wheel.

You may want to look into a full ceramic ball bearing center section and modified wheels. However that will likely make the turbo itself as much as building an entire system yourself. (i.e. 2k range)


Either way it sounds like a dyno queen to me...

2000 SVT #674 13.47 @ 102 - All Motor! It was not broke; Yet I fixed it anyway.