Have I Hurt My Turbo?

[and3_3]

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!

[R34GTFOUR]

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.

[and3_3]

Mmm i also think this.

I'm thinking it is the hot weather.

[W0rp3D]

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.

[and3_3]

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.

[and3_3]

Bump

[MBS206]

If the car is tuned, it's more likely you're touching into load cells that haven't been tuned, and hence, are lacking ignition timing, or have an abundance of extra fuel. (Or even the other way)

[and3_3]

Mmm nothing has changed to the tune since i've had it (power fc), used to run fine with same tune for over a year.

I'll pull the cat out of it and have a look at that, anything else it may be?