Compressor surge
#4
Scooby Regular
Compressor surge is a badly matched inlet or turbo spec to engine.
It's an audible "fluttering" or "oscillating" sound as stated above, easily seen by a boost gauge normally at peak boost on a twinscroll.
It's not good and should be avoided.
It's an audible "fluttering" or "oscillating" sound as stated above, easily seen by a boost gauge normally at peak boost on a twinscroll.
It's not good and should be avoided.
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#8
Scooby Regular
Not sure what you're referring to when you ask about the mapping?
#9
If you have the same inlet pipes and filter than before the turbo swap and it never surged then, then it won't be your inlet. If all you've changed is the turbo, it points towards your turbo being the issue.
Not sure what you're referring to when you ask about the mapping?
Not sure what you're referring to when you ask about the mapping?
#10
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Usually high gear low rpm so can be mapped out especially if it is possible to control the boost independant of gear like megarom for example.
If its a noise the I wouldnt worry, if the physcially shakes then it needs looking into further.
Some setups are prone to it. The vf turbos very often surge in a high gear.
Simon
If its a noise the I wouldnt worry, if the physcially shakes then it needs looking into further.
Some setups are prone to it. The vf turbos very often surge in a high gear.
Simon
#11
Scooby Regular
#12
Usually high gear low rpm so can be mapped out especially if it is possible to control the boost independant of gear like megarom for example.
If its a noise the I wouldnt worry, if the physcially shakes then it needs looking into further.
Some setups are prone to it. The vf turbos very often surge in a high gear.
Simon
If its a noise the I wouldnt worry, if the physcially shakes then it needs looking into further.
Some setups are prone to it. The vf turbos very often surge in a high gear.
Simon
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Dont totally agree with you Shaun as in Rickys example thats a map issue as if it were mapped to a slightly lower peak boost at low rpm it would be just as mental only he could use full throttle from low rpm.
Although yes sometimes surge is not map related.
If its just a noise it fine but if the car bucks and bolts or the boost pings then I would worry
Although yes sometimes surge is not map related.
If its just a noise it fine but if the car bucks and bolts or the boost pings then I would worry
#17
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The vf twin scroll can be prone to it, not sure exactly what turbo you are running now.
Assuming boost is sensible and inlet pipe is normal one then it shouldnt really be surging unless turbo issue or mapping issue
Simon
Assuming boost is sensible and inlet pipe is normal one then it shouldnt really be surging unless turbo issue or mapping issue
Simon
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