Bolt-on vs T4 setup for 500 whp

adampecush

Regular Supramaniac
May 11, 2006
2,118
3
38
Edmonton
After having my car tuned and finding out that my turbo is not far off being dead, its time to upgrade. Just wondering what the best option is for a fairly quick spooling 500 whp. Is it worth my time to do a t4 set-up with external gate, or should I go with one of the bolt on options that are out there (sounds like SP is doing a billet 58 bolt on soon) I'm fairly inexperienced with what is available right now so any help is appreciated.

Adam
 

NashMan

WTF did he just wright ?
Aug 5, 2005
4,940
17
38
42
Victoria BC
bolt on is cheeper and can do 500 and spool fast but will not rev as high as long runner could with the proper cams

all leav the rest up to you
 
Last edited:

adampecush

Regular Supramaniac
May 11, 2006
2,118
3
38
Edmonton
Good stuff guys. Looks like I'll probably go with something like a billet precision 5862 on a T4 set-up. I'm guessing on a turbo this small, the BB option won't really be worth it.
 

adampecush

Regular Supramaniac
May 11, 2006
2,118
3
38
Edmonton
Any particular reason?

I've heard a lot of bad experiences with the internal wastegates on the bolt-on turbos no matter where they are from.
 

funky_monkey58

Closing in on 200+MPH
Apr 3, 2006
1,307
0
36
St.cloud MN
adampecush;1708642 said:
Good stuff guys. Looks like I'll probably go with something like a billet precision 5862 on a T4 set-up. I'm guessing on a turbo this small, the BB option won't really be worth it.

Do the BB and a spool valve and then brag about faster than stock spool and 500hp
 

adampecush

Regular Supramaniac
May 11, 2006
2,118
3
38
Edmonton
well, pulled the trigger on a set-up.

Comp CT4-6065 BB with a 0.70 AR divided exhaust housing. I think it may be a tad overkill for 500 WHP, but I suppose more power is only a set of injectors and a second fuel pump away.
 

is503

New Member
Dec 30, 2013
1
0
0
PDX
Holly batman this is like 3 years ago, but how do you like the setup?

adampecush;1718480 said:
well, pulled the trigger on a set-up.

Comp CT4-6065 BB with a 0.70 AR divided exhaust housing. I think it may be a tad overkill for 500 WHP, but I suppose more power is only a set of injectors and a second fuel pump away.