This is the biggest misinformation there is. The standard ME9 ECU is far more powerful and sophisticated than Syvecs. Syvecs is a great ECU, but it will not improve the power and driveabiity of the car. The issue is people don't know how to calibrate them properly. I see daft things like not increasing the MAF housing diameter because "the ecu doesn't like it"...

Also, 300bhp on a standard ST turbo and pump fuel is pretty much a pipe dream, never mind 330. I did some development a couple of years ago, and the most power I could get was 294bhp using the standard turbo. You would be right to question whether it was my skills in mapping that I only got 294. I asked myself the same question. So I dyno'd a CP340 car, that had just been freshly converted. It made 284bhp. A Revo car made very similar.

So where are these 300+ power figures coming from? The answer is roller climb. The car being FWD, fairly light and making a lot of torque results in the car climbing up the front roller and leaving the rear one. This means there is less intertia to spin and results in inflated figures. The car needs to be strapped down properly, and virtually nobody does this. You need straps over the front suspension arms to stop if climbing out. I've tested it many times - don't strap it down properly and suddenly you make an extra 35bhp....

The biggest con is this: You go into the Dyno for a map. The car is run up and makes standard ish power. Because the standard torque is low, it does not climb up the roller. Then a map is put on. The car is run again, only this time it had much more torque and so climbs up the roller. The result is that you gain 30 odd bhp from the climb, plus whatever the map gives you. Very happy customer and the tuner looks like a hero. And you can't argue with it - the car was run before and after the map without being moved so everything is spot on? Not so I'm afraid...

Rick