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Have I Hurt My Turbo?

and3_3

By and3_3,
in Engines & Forced Induction

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and3_3 Proficient

and3_3

Posted
Posted

Hey all,

was playing around on my greddy profec b spec the other night, i cranked the set gain (set gain is measurement of how fast the wastegate opens) up to 16 instead of the 12 that it was tuned on. Since then i have noticed a considerable loss of power on boost, it still boosts to 12 psi fine but doesnt feel nearly as powerful as before.

Obviously i have brought the set gain back to 12, but have i damaged my wastegate actuator or something else by trying to make it too responsive?

If there is already a thread about this then please point me in the direction.

Thanks!

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https://www.sau.com.au/forums/topic/248793-have-i-hurt-my-turbo/
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R34GTFOUR Mentor

R34GTFOUR

Posted
Posted

you wouldnt have damaged the actuator, the only thing that can let go when there is too much boost is the stock ceramic exhaust wheel, they tend to break...

But if the turbo is spooling up fine and holding boost without making funny noises it should be ok.

Are you sure the loss of power isnt just in your head? If you set the gain to 16 and drove around for a while then turned it back to 12 its going to feel slower, obviously cause you were use to it being quick.

W0rp3D Grand Master

W0rp3D

Posted
Posted
Mmm i also think this.

I'm thinking it is the hot weather.

Hot weather is a serious power killer on turbo cars, i notice in mine that the power is not as responsive or sharp as it is in colder days.

  • 2 weeks later...
and3_3 Proficient

and3_3

Posted
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Posted

Ok im pretty sure it isn't the hot weather because the power is definately coming on ALOT later than it used to.

Turbo spools to 12 psi round 3000rpm but full power doesn't hit till around 4500rpm.

I'm thinking cat converter is full of crap or maybe ignition related or maybe fuel filter/fuel pump are on the way out.

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