Gcg High Flow Turbo Who Is Using One

[scotty nm35]

Hypergear.

End thread.

^^ This. Or go a proper Garrett gt3076 with supporting mods.

GCG options usually don't end well.

[scotty nm35]

Ill certainly ask Hypergear. Just reading through the sites you linked, it would seem the SS1 and SS1 billet machined turbo are the best match for what I need - maximum low end response. Anyone using those models?

What are your power goals?

[zoomzoom]

Modest, in fact not much more than stock. I was running 9psi, and I think Ill be leaving the stock ECU, hence why I am looking for a close-to-stock replacement (a bolt on replacement). Torque and boost rolling off at higher rpms isnt a big deal since its a daily driver, meaning I also want to keep low end response as good as possible. If I get some stronger midrange torque, then thats nice too.

Any info on why the GCG option doesnt end well?

Also my understanding is that these hypergear units (SS1) are new turbos, but still cheaper than GCG where you have to send your existing one off to be modified.....

What are your power goals?

[Kinkstaah]

I hate to be 'that guy' but changing the Turbo at all, in any way, in any form, in any possible configuration means you should immediately obtain a tunable ECU. Do not do it otherwise.

[scotty nm35]

If you simply want a replacement turbo that will run fine on the stock ecu, let Stao know and he will make a stock sized highflow.

The GCG units are generally GT3076 cores stuffed into factory housings. You said you don't want lag... Garrett BB cores don't like the high thrust loads usually found when stuffing such large cores into small housings. Hypergear generally use bush cores for this reason.

Stao can highflow your core, or supply a complete turbo. Up to you. Ring him or message, and have a chat about your options.

[zoomzoom]

Out of interest, isnt a hi-flowed turbo effectively a different turbo? The SS1 turbo I was referencing seems to be a close match to stock, certainly comparable to the hi-flow modified one.

I hate to be 'that guy' but changing the Turbo at all, in any way, in any form, in any possible configuration means you should immediately obtain a tunable ECU. Do not do it otherwise.

[KiwiRS4T]

Out of interest, isnt a hi-flowed turbo effectively a different turbo? The SS1 turbo I was referencing seems to be a close match to stock, certainly comparable to the hi-flow modified one.

"Hi flow" is a loose term for a rebuilt turbo which may in fact be rebuilt to original specs or to produce a little or a lot more power. Hypergear can build to your requirements so an email or a phone call would be a good place to start.

[zoomzoom]

Yeah, Ive already sent an email. Even the standard hi-flow they list says the compressor and exhaust wheels are replaced with larger steel wheels, hence my question that isnt a new turbo which closely matches the characteristics of the original effectively no different to the ECU (if a high flowed one is fine on a stock ECU)?

[scotty nm35]

Just changing from ceramic wheels to steel will affect the tune, but as long as the wheels don't flow much more than the stock ones, you should be fine.