kiks wrote:Who in the fuck would run 1981 Garrett clone turbonetics? Jesus you're better off with an eBay master power, at least they copied something from the 90's.
same for precision. Massively undersized exhaust wheels, drive like aids. Amazing on strip as they come on the two step with 1:1 exh/map for racing each other to bump in. Otherwise they're just a really shit Garrett clone. Show me a kenworth with a precision expected to be on 50-100% duty for 500,000km.
BW EFR is ducks guts. So much more expensive than it should be. Garrett gt or gtx will do the same job and take up less room, and cost $1000 less. There's a reason be and Garrett are the two big oem suppliers though...
Whilst I agree with your endorsement of Garrett and BW for their renowned longevity and reliability under all sorts of conditions, I do disagree with your view on precisions
The precision billet CEA series (both 1 and more recent version 2) have been proven time and again. If as you claim the exhaust wheels are so undersized, how is it possible for the 6466 and then again 6766 to make more power and flow higher cfm than the 6266 (same exhaust wheel)? If the wheel was maxed out, a larger compressor wheel would result in poor performance than the smaller compressor wheel, which clearly isn't the case.
My decision to run with the 6466 dual bb was for several reasons:
1. Fantastic flow for higher PR's in a medium frame turbo compared to say a gtx3582 (going to run 40-42psi)
2. Compact Chra and comp housing (notwithstanding 0.7 ar)
3. Good value
4. Transient response is similar to smaller gtx3576 with the flow of gtx42xx
66mm wheel is smaller than gtx35 but makes more cfm at better efficiency above 2.0 PR
The 66mm wheels have also been known to make 110% of the rated power rating on e85/c16 race fuels (1000whp for 900hp rated turbo base on cfm) - although granted this is at super ridiculous boost (50psi plus)
All this points not to an inefficient or undersized exhaust wheel.
Sure if you're going for a genuine 1000+hp at modest PR (3 or under) then the efr's have better options but size is a limiting factor.
Tl:dr - precision got it right with the latest series
Mick