Boost

[lach 32]

hey guys,

i installed a hybrid front mount on my r32 gts-t the other day, along with a split dump/front pipe. My car has a 3.5 inch cat back, apexi pod filter and thats it. took it for a drive and my boost gauge was showing 12 psi of boost. any ideas?

cheers.

[R31Nismoid]

Are you using an aftermarket boost gauge?

Is it connected correctly and all that sorta stuff?

It shouldnt be 14. Around 10-11 IIRC.

[r32woohoo]

it shouldnt be that high coz the factory wastegate actuator is set to 10psi

so if you havent got a boost controller to turn it up it should sit at around 10psi

n who said you cant fit a bleed valve/boost controller to a 32? :S

[r32woohoo]

if you still have the factory turbo+wastegate actuator, technically you cant turn it down lower then the set pressure, only up.

Boost controllers only restrict the pressure the actuator sees and tricks it into thinking theres less boost so it continues to build more

Maybe theres something wrong with your actuator or boost gauge

14psi on the standard turbo wont last very long, but then there have been people who have run it on 14 for ages and not had any problems.

[lach 32]

is there any way to see if the wastegate actuator is stuffed?

[Cubes]

Damn wish mine did that.

I had issues getting boost over 12.5psi. Required a good ebc or my dodgy adjustable actuator mod.

I wouldn't worry. Get it on the dyno and ensure there's no detonation and the fueling is safe being under/flat 12:1.

I ran mine on 1bar for 4yrs 100,000km's odd without issues but it wasn't running lean nor was it detonating, I also didn't hit the local track with it so it only ever saw quick blats, not enough time for EGT's to soar and destroy the ceramic wheel.

[moonus]

maybe uve already got a bleed valve in there boosted to 14psi :laughing-smiley-014:

[Cubes]

14psi is fine on the r32 turbo's, throw your r32 actuator back on so you get better boost response.

Ensure its not detonating and not leaning out. Don't worry about it.

But do tell me.... Is it making 14psi from the word go (~3000-3500rpm) or is it making say 12psi at 3500rpm odd then slowly creeping higher as rpm increases?

[lach 32]

maybe uve already got a bleed valve in there boosted to 14psi :laughing-smiley-014:

lol, that was the first thing i checked for

[Cubes]

I ran mine on 1bar for 100,000km's on the stock ecu.

As I said before, if its not pinging or leaning out unless your chasing more power there's no real need for an aftermarket ecu.

You can get the stock ecu remaped but there's not all that much to gain with the stock turbo by doing so. $$ for performance with the rb20's stock turbo and ecu remap isn't all that flash.

[lach 32]

ahh k, thanks for the help cubes.

[Munkyb0y]

this sounds strange, coz the r33 actuator sits at 5psi (i think) + maybe 2psi from exhaust

r32 actuator sits at about 10psi + 2psi, yeah?

so if you are running 14psi with both these actuators, then something else must be controlling your boost.