11-06-2012, 06:53 PM
Turbos run on hot, expanding exhaust gasses...
The more fuel you put in, the harder the engine works, the more energy exits the exhaust, spinning the turbocharger faster... Hence why lifting off the throttle slows the turbo down - less fuel injected, therefore less hot exhaust gas to spin the turbocharger...
The injector pump/engine struggling for fuel will reduce power and therefore boost, if you were having an air problem, you'd notice belching black smoke from the back, from the engine running rich as there's not enough air to burn with the injected fuel...
More than likely a fuel related issue... If I were you, check your in tank sender - lift the back seats, there's a black cap, pry it off and undo the ring around the tank sender and pull out - have rags at the ready - there's a strainer in the bottom of that pot where it picks up the fuel, that can often clog and cause all sorts of problems...
*****^^ONLY DO THE ABOVE WITH LESS THAN A QUARTER OF A TANK OF FUEL^^*****!!! Or you'll end up with about 30 litres of fuel pissing out all over the floor... Preferably verging on the edge of empty, just in case!!
The more fuel you put in, the harder the engine works, the more energy exits the exhaust, spinning the turbocharger faster... Hence why lifting off the throttle slows the turbo down - less fuel injected, therefore less hot exhaust gas to spin the turbocharger...
The injector pump/engine struggling for fuel will reduce power and therefore boost, if you were having an air problem, you'd notice belching black smoke from the back, from the engine running rich as there's not enough air to burn with the injected fuel...
More than likely a fuel related issue... If I were you, check your in tank sender - lift the back seats, there's a black cap, pry it off and undo the ring around the tank sender and pull out - have rags at the ready - there's a strainer in the bottom of that pot where it picks up the fuel, that can often clog and cause all sorts of problems...
*****^^ONLY DO THE ABOVE WITH LESS THAN A QUARTER OF A TANK OF FUEL^^*****!!! Or you'll end up with about 30 litres of fuel pissing out all over the floor... Preferably verging on the edge of empty, just in case!!
