Turbo power pulsing waves
#1
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Turbo power pulsing waves
Ive noticed when Im powering hard say up a hill, the power from the turbo seems to come in waves, not massive jolting waves, but not smooth, you can feel it almost pulsing/waving as its gaining speed, it still accelerates very well but you do feel it somewhat holding back and the only way i can think to explain it is waves/pulses of power... any ideas what this would indicate or what i can do to rectify this
thanks
thanks
#6
The actuator is the round thing attached to the turbo mate it will have a rod coming out the back of it not sure how to test it though!
#7
Can you confirm for us whether the car's been remapped or otherwise modified in any way, and can you also (if you have a boost gauge) tell us exactly how pronounced these "waves" are, and what sort of repeat frequency they have?
If by "disconnecting the actuator" you mean removing the boost control pipe from it, do not under any circumstances try this.
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#11
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The cars not been remapped, the only mods I have are a stainless steel cat back exhaust, and a STi intercooler.. i had a PPP ECU on it, but removed it after a few months, and went back to std ecu.
The waves are smooth, not jerky motions, you could to be honest live with them, but I know they are there and if i can cure them id love to, its only under preasure like when I power up the hill on route to Farnham, its the Basingstoke rd, the hill that leads into Farnham, its quite steep, but the car gets into this pattern of pulses, where its powering all the way, but you definately feel the waves/pulses in probably 1 second gaps, which dissapear once you level out and back offf the power..
thanks
The waves are smooth, not jerky motions, you could to be honest live with them, but I know they are there and if i can cure them id love to, its only under preasure like when I power up the hill on route to Farnham, its the Basingstoke rd, the hill that leads into Farnham, its quite steep, but the car gets into this pattern of pulses, where its powering all the way, but you definately feel the waves/pulses in probably 1 second gaps, which dissapear once you level out and back offf the power..
thanks
It might be the actuator but it might well be something else. Probably more likely to be overboost than the actuator itself being damaged.
Can you confirm for us whether the car's been remapped or otherwise modified in any way, and can you also (if you have a boost gauge) tell us exactly how pronounced these "waves" are, and what sort of repeat frequency they have?
If by "disconnecting the actuator" you mean removing the boost control pipe from it, do not under any circumstances try this.
Can you confirm for us whether the car's been remapped or otherwise modified in any way, and can you also (if you have a boost gauge) tell us exactly how pronounced these "waves" are, and what sort of repeat frequency they have?
If by "disconnecting the actuator" you mean removing the boost control pipe from it, do not under any circumstances try this.
#12
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I did a oil change myself and filter less than 1000 miles ago, 10w 40 oil, I will try cleaning the boost control solenoid.. is that on top of the rocker cover ?
thanks
thanks
#18
I think my 2003 sti is doing something similar
if anyone knows for sure I would be glad to hear it.
meanwhile, I too will check the pipes from my turbo to the solenoid for leaks.
may be worth simply replacing them as I would not expect them to be expensive.
if anyone knows for sure I would be glad to hear it.
meanwhile, I too will check the pipes from my turbo to the solenoid for leaks.
may be worth simply replacing them as I would not expect them to be expensive.
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