Kedlestone

iTrader: (9)

Just curious really, when I'm in 5th at about 60mph (on a motorway) and I floor the throttle as the boost builds I get the usual turbo wine then it's followed by what sounds like turbo chatter whilst it's still boosting? Why would this be? Turbo is a VF34 running about 1.4-1.5 bar on full boost.

daz3883

iTrader: (1)

U got an induction kit m8??

Kedlestone

iTrader: (9)

Yeah APS

daz3883

iTrader: (1)

Its that makin the chattering noise m8. ive just had an induction kit on mine and it 2 does that sound now. gives off a louder dump when changing gear etc aswell ye?

the hamster

iTrader: (7)

it could be that but its more likely to be a knackered actuator like I had on my VF35. Only used to do it when holding boost in the taller gears like 4th/5th.

changed the actuator and it fixed it.

Sy5

iTrader: (6)

Mine is the same.

Badger_88

iTrader: (5)

Does it drop boost when it chatters? What dump valve you running? Could be a dump valve problem.

Kedlestone

iTrader: (9)

Running a HKS SSQV, it doesn't seem to drop boost according to my gauge readout. It tends to chatter for a few seconds as the boost peaks then goes (in 5th).

Sy5

iTrader: (6)

Same here HKS and no drop. Thought it was normal although my classic never did it.

Kedlestone

iTrader: (9)

So is this a problem or just something that happens with the mods I have? Thinking of going back to recirc soon anyway if it's the DV causing issues. I'd be surprised if its the actuator as its a pretty new turbo but worth a check, how would I go about checking it?

bustaMOVEs

iTrader: (31)

It normal mate, it will chatter when under load in high gear until the full boost is on then chatter will go,if you knock it down a gear and it won't chatter.
Normally happens with induction kits.