Hi to all,

I am about to purchase the Billet 4272 and wanted to ask which AR to get.
My goals are for low 9sec and the car is used for the strip, no dd

Thanks

 

U will be good with the 1.25 if u have a b series

 

Yes I have B series, I was on 81mm and now going to raise the cr and 84mm

 

It's a big turbo after all, get the 128 ar.
I don't think they make a 125.

 

Yes they do the 1.28
Thanks for the help.
I'll be ordering the FR twinscroll top mount also

 

use the 1.28 a/r with the fr twin scroll you will be surprise of how fast the spool of that turbo is... and i hope you got a tranny btw....

 

if you want low 9s go for a 67mm...the 4272 will get you in the 8s with the right setup...

 

My bad is the 1.28 one forgot that presicion run different

 

you right but once he go low 9s he is going to have 8's on the back of his mind so why donts go 72 from the begining? thats why the make the boost controller for you just run it till where you want...

 

yup, and he said its for drag. So a few mm bigger ain't gonna hurt!

 

Or you can just try to run 8's on a 67.....

 

I predict it will happen early in the season this year!!

 

the new efr borg warner is supose to make 1000whp...duel entry so it should spool quick...but the 4272 is a badass turbo..nothing can keep up right now..

 

Thanks guys for all the replies

As for the turbo, I deceided to go with the billet 72mm as everybody says good things about it.
Here in Malta,we have no resrictions on turbo size in the street class I race.
I was thinking about the AR as it is a big turbo and don't want to fall out of boost between gears.
As far as tranny, I am still on Oem Gsr
Still deciding on which 1 to go.

For 8's here in Malta are far away in FWD as our strip is not that good as you have here.

My best in the EF was 1.61 but loose traction 3 and 4 gears with just about 700hp and managed to do a 9.9 run

 

**** ceases to amaze me