Wastegate Actuators

[LotusGTR]

So I have a set of -7 Garretts which have standard wastegate actuators. I'm not sure what this means they are set to, but I understand it's quite low (circa 10psi).

If I'm planning on running 16-18 psi then do these need modification before they get installed? Or is this handled by fiddling with the boost control mechanism (solenoid thingy near the plenum).

R32 GTR running standard ECU, no EBC.

Makes sense to me that they would, but as I've not done this before and fiddling with GTRs is a suprise-fest for the under-educated, thought I'd better ask first, spend money later.

Thanks.

[Deano45]

So I have a set of -7 Garretts which have standard wastegate actuators. I'm not sure what this means they are set to, but I understand it's quite low (circa 10psi).

If I'm planning on running 16-18 psi then do these need modification before they get installed? Or is this handled by fiddling with the boost control mechanism (solenoid thingy near the plentum).

R32 GTR running standard ECU, no EBC.

Makes sense to me that they would, but as I've not done this before and fiddling with GTRs is a suprise-fest for the under-educated, thought I'd better ask first, spend money later.

Thanks.

I'd check them anyway to make sure that they are set even and open at the same pressure. This will help prevent turbo shuffle. This is what I am doing with my new -7 turbos tomorrow anyway and have been advised to do so.

You should be able to wind them up so that they open at higher pressure.

[LotusGTR]

Thanks Deano. Yeah, non sequential turbs, you'd want it that way.

Bump for the crew who know the answers....

[LotusGTR]

Bump as I'm going away for a few days. Hopefully somone can help with my query.

Cheers.

[LotusGTR]

and another bump. Nobody want to help out?

[STATUS]

fit aftermarket 15psi ones for best results, or just set the boost via a mbc like a turbo tech. Id suggesta remap with the restrictor removed it willrun 15psi flat or any boost with a mbc.

Dont boost it too much with the factory tune without having it checked on a dyno.