Rallyesport.....

At least its thanks to you that RST's become rarer and therefore increase in value. I am now going to enlighten you to something that will make your sarcastic opinions look rather silly.

It is no lie that RST's are getting older now and it is also no lie that almost EVERY RST that we tune has either faulty Fuel Metering Head, Throttle Position Sensor or Fuel Pump. Some are lucky to have issue's with all 3.

If the Throttle Position Sensor is not working correctly, the Fuel enrichment will simply not work. We have seen cars running 15psi or more with NO fuel enrichment.

In the case of our friend here with his 7psi car, if the enrichment isn't working then it might just survive at 7psi, but 12psi might just be enough to tip it over the edge, reducing it to a Molten mess.

When we carry out a full-tune, for which we charge £94, we will test the Fuel Pump (using our £6000 Sun Modis, which measures motor Waveform's). We can tell the running speed of the Pump and how 'cleanly' it is running. We can also check the the TPS is triggering Fuel Enrichment. We also have checks that we carry out on the Metering Head. Once we are happy with these things, we connect our £1000 MoTeC Lamba Meter and high-spec Boost Gauge and do a full fuelling check on the road.

As I said, Gamble with as much as you can afford to lose. In this case, the gamble would cost £80 and could safeguard your engine. Raising the boost is in itself a relatively simple task, but running the raised boost level safely is far more complicated.