best option ? ko3's or ko4 ?

[dilbert]

Any help would be great i know this is asked alot but i really need someone who knows what there talking about and can point me in the right direction.

Im currently running a mapped ( r-tech ) agu with a ko3 turbo. sports cat/exhaust system, forge d.v, g60 flywheel with vr6 clutch.

I Need more power so not sure whether to get a ko3'S turbo ? if i do does it mean i can run the same exhaust manifold and my sports cat down pipe/ injectors etc  ?

Or is the ko4 the best option ? which i heard you have to change all the manifold, oil return pipe and downpipe ?

Any other mods needed such as injectors ? fuel pressure regulator ?

what gains do you get over both turbos with the correct mapping ?

whats the hybrid turbos i have heard a few people talk about ?

thanks alot for your time, jamie

[jonrandom]

Depends on how much power you want to run?

 K03s can get you 220-240 bhp, K04-001 you dont have to change the manifold and downpipe can get around the 260 bhp mark where as any other k04 like you say you will have to change the manifold and downpipe, lines etc but can get around 280 bhp.

If you hybrid a k03s get the RS6 internals put in it you can get around the 270 bhp mark and all oil/coolant lines and downpipe manifold will fit.

With most of the turbo upgrades you will have to get bigger injectors, 255 fuel pump, larger maf, fmic and a map, dont worry about a fpr.

[dilbert]

thanks for your reply mate.

you know anyone on here who can build hybrid turbos ?

[emery1990]

most s3 leon's etc get around 260bhp for stage one.  I'd go k03 hybrid if you want more that 230. Remember on audi-sport people having it done and costing 2k without doing anywork, was done by badger bill. hybird turbo's are like £600 odd quid from cr turbos. then you need s3 maf injectors and something else I think, biggest cost is stage 3 mapping at £600.