Wastegate

[Bjoern]

Today i take a piece of thin hose and connects the small pipe on the wastegate to the pressure side of the turbo.
Drive a small trip just to warm up the engine.
Now i got a nice working temperature, make a little pressure on the trottle and what happened The Boost gauge fly up to 1.8 bar without full trottle. I could feel the tyres let go from the asphalt in 2. gear.
DONT DO THAT AT YOUR CAR - UNLESS
Now it´s back to original again. Thats was a heavy experince.

[kwlw]

Today i take a piece of thin hose and connects the small pipe on the wastegate to the pressure side of the turbo.
Drive a small trip just to warm up the engine.
Now i got a nice working temperature, make a little pressure on the trottle and what happened The Boost gauge fly up to 1.8 bar without full trottle. I could feel the tyres let go from the asphalt in 2. gear.
DONT DO THAT AT YOUR CAR - UNLESS
Now it´s back to original again. Thats was a heavy experince.

If you use bleeder valve on that connection - it's the same thing as stronger WG spring.

Also on factory race cars, it was done somewhat similar way for boost controll. I mean boost controller managed that thin hose.

Sau

[Greg_S]

Yeah, the boost control on the S2's is done in a similar way via the WGFV

[Bjoern]

Can you tell me what the conceqence will be if i drive with the hose on for longer time.
With the hose on i can hear the blow off valve realy loud!
Will it give better accelaration. (that i know for sure)
and can the engine put op with the higher pressure?
Better top speed?
I know the pressure is higher, but will the gas follow?
I just have too know.

[kwlw]

Can you tell me what the conceqence will be if i drive with the hose on for longer time.
With the hose on i can hear the blow off valve realy loud!
Will it give better accelaration. (that i know for sure)
and can the engine put op with the higher pressure?
Better top speed?
I know the pressure is higher, but will the gas follow?
I just have too know.

Have you any kind of chip tuning in your car? If you will disconnect wastegate, you will overspool turbo at some point. Also you may overboost to the boost values which are not in ECU tables, that may give you non optimal fueling and spark. Consequences may be fatal to engine, or nothing may happen (it depends on ecu).

Non controlled boost is bad, controlled high boost is good

And yes, whilst your engine survives - you have more boost, it will give your better torque = more power, acceleration, speed. Usually such experiments end with something what reminds me pieces of spit chewing gum from the metal inside the engine instead of pistons, rods...

Sau