Internal Wastegate For Gcg Turbo

[Jsikalias]

hi

im after some answers regarding wheather any rb25 with a highflow have changed there internal wastgate too either external or internal at the moment my car has the standard one on there and its opening up because im loosing boost after 5000rpm. from about 14 - 10psi

which internal wastegate or external wastegate is best for my highflow thanks.

[R31Nismoid]

I bet you have a lazy actuator

Plenty of people running the GCG internal gate hiflow turbos without any issue at all

[Bass Junky]

Are you sure it's opening up under boost?

If it is, there isn't anything you can do about it. A larger internal wastegate simply controls boost creep.

An external wastegate may solve your problems, but to go to that extent, you may as well sell your turbo, take the money you were going to spend on the manifold mods and wastegate and buy a GT-RS or a 2835 ProS.

my 0.02c

[Abo Bob]

Check it's not your bov leaking first.

After that get an HKS adjustable actuator which will fix it.

[Jsikalias]

yeh iv checked everything iv changed the intercooler lol iv blocked the bov and also have put on a mate of mines one on and i have a gizzmo EBC so my other option is wastegate opening up because the boost from 2000rpm - 5000rpm is constant 14 then as soon as it touches 5000rpm it tails off. and the funni thing is when i run 5psi with the gizzmo it does creep too 10psi at 7000rpm so there is sumthing dodgy going on but when i take the line off the gizzmo and let the wastegate do its own thing it creeps about 7psi

[R31Nismoid]

Id get a better actuator. Plenty holding more than 14psi without issue

[Jsikalias]

where would i be able to get one? in melbourne or is my only choice slide or performance wise

[dangerman4]

where would i be able to get one? in melbourne or is my only choice slide or performance wise

gcg will post one to you for around the $200 mark (i think) for a 1 bar actuator.

im sure theres turbo shops in melbourne that will have them in stock.

ring around and get a few prices and then play them off against each other til

you find a shop thats not going to screw you

[Jsikalias]

i asked GCG wheather they put a stronger spring when they highflow the turbo and they said they just put the standard wastegate back on and it should be fine...

[Abo Bob]

Yeah but it's not fine when you want it to hold a much higher boost than it was originally intended for. Get an adjustable actuator.

[R31Nismoid]

As above.

Just get the actuator and be done with it!