Turbo flutter at low boost

[Ottdurr]

I know it's an age old argument that turbo flutter may damage the turbo over time, but I want to know if it can still damage the turbo if it only flutters at very low boost?

Recently got a new BOV and I've adjusted the pretension spring so it only "blows off" above 4 PSI, which means if I release the throttle at ~2 PSI I get a nice fluttery Su-tu-tu-tu which my inner 14 year old self loves. My logic is that surely this couldn't possibly damage the turbo like 14PSI with no BOV could. What do you reckon?

[GTSBoy]

It's a myth anyway. That myth is not the reason that Nissan fitted compressor bypass valves to our engines. They make the engines work better.

Externally venting BOVs do not make them work better in the same way. In fact, if you still have you AFM, they make them work worse.

Edited February 1, 2020 by GTSBoy

[Murray_Calavera]

If it makes you feel better, I've never had a turbo fail from no BOV. Skyline is about 4 years, the swift is about 10 years. No issues to report. 

What ECU is your car running?

[Ottdurr]

3 hours ago, GTSBoy said:

It's a myth anyway. That myth is not the reason that Nissan fitted compressor bypass valves to our engines. They make the engines work better.

Externally venting BOVs do not make them work better in the same way. In fact, if you still have you AFM, they make them work worse.

It's a dual port BOV with 25% venting to atmosphere and 75% plumb back, hasn't thrown a check engine light or anything so it seems the sensors are happy

[Ottdurr]

3 hours ago, Murray_Calavera said:

If it makes you feel better, I've never had a turbo fail from no BOV. Skyline is about 4 years, the swift is about 10 years. No issues to report. 

What ECU is your car running?

Factory 

[GTSBoy]

It won't even throw a CEL on any Skyline, even if it is 100% venting. But it sure as hell f**ks with the fuel-air ratio when it vents.

Those hybrid BOVs that vent and recirculate are the most wanky of all. They are only to make the noise, whilst trying to keep the ECU and fuelling happy enough to cut out all the horseshit that a venting BOV causes.

[niZmO_Man]

It'll be fine. Just don't be surprised if you get defected.

[Ottdurr]

22 minutes ago, niZmO_Man said:

It'll be fine. Just don't be surprised if you get defected.

No such thing here in NZ 

[niZmO_Man]

Noice