GT25 vs GT28

[banger]

Hi All,

I have a 1979 Datsun 1200 ute with the following mods.

s13 CA18DET

s13 5 speed gbox

FMIC (fairly big, not sure of exact dimensions)

Turbosmart Veeport BOV

Stinger 4424 EMS

Garrett GT28

Oil Catch Can

TurboXS boost controller.

The GT28 is great, but it lags like a bastard! Would going down to a GT25 affect performance other than coming on boost earlier? especially considering the fairly large intercooler?

Thanks.

[turbomad]

[turbomad]

Well it won't make the same power as the bigger turbo but chances are your probably not using the GT28 to it's full potential anyway? What psi and rwkw is your current setup making now? Even if you drop some rwkw at the topend the low-mid range of the smaller turbo might just make it as quick to drive around town as the GT28, as an example a friend has a turbo EA Falcon with a massive turbo making 300rwkw, yet it only manages a 13.3 1/4, now a Skyline can do that with only 200rwkw.

[SeD]

Well it won't make the same power as the bigger turbo but chances are your probably not using the GT28 to it's full potential anyway? What psi and rwkw is your current setup making now? Even if you drop some rwkw at the topend the low-mid range of the smaller turbo might just make it as quick to drive around town as the GT28, as an example a friend has a turbo EA Falcon with a massive turbo making 300rwkw, yet it only manages a 13.3 1/4, now a Skyline can do that with only 200rwkw.

how much would a garrett T25 cost new /second hand??? its for a mates datsun aswhell