Turbofags, I need your help! I can't figure out what's

>>16197521
is it a stock BOV/Boost controller?

pretty sure the factory boost is around 6ish

Just put a aftermarket Controller on there and enjoy the free hp boost

>>16197537
BOV is blocked, no boost controller at all, as I said actuator is plumbed straight to the piping (to the standard wastegate actuator pickup). Standard actuator on this car should be 5 PSI and I definitely see 5 PSI in most cases, like when I ease into boost

>>16197521
Your wastegate has a problem with releasing its pressure, either the spring is worn out, its not big enough to do the job or there's a problem on the vacuum line to the gate actuator which isn't sending the pressure correctly to open.
9/10, its generally those

>>16197543
Why do you want to keep the boost at factory?

The stock Turbos shouldnt grenade unless your running 10-15psi+

Just run like 10psi

>>16197547
What this guy said

>>16197547
Standard turbo, standard actuator, brand new hose to the actuator. So you reckon, given this, that the actuator itself is fucked?

>>16197550
Mate I don't want to run stock boost, I just am for the sake of diagnosing a massive boost spike I've been experiencing. I recently was running 10 PSI with an MBC and was seeing spikes of 15+ PSI.

>>16197553
More than likely, if you've got a new hose to the actuator and its only just started happening, my bet is that its maybe a bit too long. Try shortening it as its practical, or the line itself is something iffy and gets a bulge in it because its not rated for pressure

>>16197558
It hasn't really just started happening, I've noticed a bit of boost spiking since I've had my car. I've been running 10 PSI since I installed my FMIC a few months ago and it was spiking to maybe 13 PSI, but I recently replaced the standard exhaust with a 3" turbo back and noticed it was spiking worse than it had been before. Line to the actuator is as short as it physically can be, it's like 6 inches lol

>>16197569
Check the gate then, they do wear out eventually and its not like R33's are 'new' cars anymore

>>16197583
The gate being the actual wastegate, or the actuator? And check it how?

>>16197557
Oh shit yeah im with you.

Def replace the gate

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>thinks he has problems
My fucking soarer fuel cuts at 14.5psi
It's hitting 18 now

Just accept your new life of danger

>>16197601
I'd prefer my exhaust wheel not launch itself out onto the road behind me, thank you

>>16197607
Nah bro it'll be fine, the dangerboost is your life now

>>16197589
Both. The actuator you should be able to test by using an air pump or the reverse side of a hand vacuum pump. The gate will depend on your type of turbo. I know nothing of r33 but you want to make sure there is no buildup around the waste gate or cracks.

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>>16197601
Mfw Na ls1 making 226rwkw and assloads of torques without any problems and no lag

>>16197615
Well I can tell the actuator is working properly-ish, it holds 5 PSI as it should it just doesn't seem to open fast enough. Don't think a hand pump will tell me anything there. I'd be very surprised if there was any buildup as I put the turbo in less than 10,000 kms ago and it looked fine then, and as I said the issue has been present since I've had the car (bought it with a blown turbo and put a used one in when I got it). And I would have thought any cracks would be increasing flow through the wastegate and reducing boost, not increasing it. Plus, I really, really don't want to pull my downpipe off, I just installed it and it's a real cunt of a thing to do :P

I think I'll just bite the bullet and go with a new aftermarket adjustable actuator, I'll be needing one later down the line when I upgrade my turbo anyway so it's not a waste of money