zakesm

Does the turbo on a my99 imp turbo spool up/boost whilst the car is in neutral? the reason 4 the question is 2-fold:

1) will my soon to be fitted vta dump valve whoosh in neutral (intimidation points)

2) so i can check for turbo hose leaks etc, whilst the bonnet is open and the car is being revved.

zak

DeerHunter

it will pssst in neutral if you rev the bollocks off it!.........

MarksWRX

Yes the turbo does spool with the car in neutral. The turbo doesnt know whether your in gear or not!

zakesm

k cheers thanks guys.

scoobyboy

but it's not under pressure until the car is driving so it probably wont make any noise

greasemonkey

Eh? The turbo doesn't, but the ECU certainly does, as the gearbox has a neutral position sensor.

If there's no load on the engine, you might get a bit of boost in the system, you won't get anywhere near as much as you would when the car's being driven.

zakesm

so will i be able to hear turbo pressure leaks caused by cracked hoses, etc? what about the whooooosh noise from the vta dv?

ScoobyDoo69

iTrader: (17)

well having a VTA fitted to mine, in neutral u can hear it, although not as loud as when actually accelerating through gears, hope this helps

ScoobyDoo69

greasemonkey

Whether or not you'll be able to hear air leaks is a piece of string question, all depends whereabouts and how bad they are.

The DV should still open in neutral as there'll still be vacuum in the manifold to pull it open. However, without the same amount of boost pressure in the I/C, you won't get the same magnitude of "dump". Looks like you'll have to find something else to scare the tribesmen with.

MarksWRX

I dont understand why you dont have the same amount of boost pressure at the same revs whether in neutral or gear. My boost gauge shows the same, although I'm not willing to rev quite as high in neatral.