Johny GTO

thanks guys. Sounds like an awesome innovation for turbos. That BMW gets the torque kicking in right away, damn close to a PD blower!!
I have been leaning towards a PD blower for my GTO because i use it on the street, and like the instant hit of torque. However, if these twin scroll turbo's can be used on a GTO turbo kit, then i would go that direction possibly.
The results are kick ***!!

Has anyone used these turbos on out cars? Are these turbo's expensive as compared to the regular turbo's?

TiAL

what Hennytime is describing is VNT or VGT, not twin scroll...VNT turbos are very limited right now in gas engines because of the heat, they are very popular in diesel apps becaue they run much cooler

i believe the only full VNT gas turbo car to date is the 997TT
honda/acura has one that is more an on off switch and doesn't really count

jeejee

iTrader: (3)

555hp at 1,5 bar boost indead does't seem quite right

that would mean a N/A base engine of about 220-230hp

there is something fishy..

Urban Legend

iTrader: (5)

Awesome design by BMW!

ayousef

you didnt read my post, its a marketing or whatever u wanna call it gimmick for lack of a better term,

the car produces full boost from 1500 to 5750RPMS, and after that boost DROPS until it reaches its lowest point at 6000rpms, which happens to be where the car makes its max HP. So point is, the car is making low-end and midrange of a 600+ hp car.

And it makes sense for the n/a base engine not to have the power youre expecting, 4.4liter v8 with 9.3:1 cr, sounds about right to me or?

jeejee

iTrader: (3)

no, i read your post allright, but it seems to me when boost drops of so much (to get that unrealistic low power) after 5700rpm, it would not make peak power at 6000

Don't get me wrong i really like bmw engine design, as a matter of fact, i'm building and installing a bmw m5 turbo engine myself

i would expect the lower compression 4.4 v8 - 32v base engine to make about 280-300hp