Putting a call out to the GTi folk with the APR Tune, have you had any issues with high end revs bringing up the check engine light?

My car has about 3000kms on the clock and have had the APR tune for about 1500kms of that, in the last 500kms a strange thing has been happening that has me worried.

I have had the engine check light come on 4 separate occasions. On the first three occasions the engine check light flashed after the car reached 7000 rpm in either 3rd or 4th gear, at which point I immediately reduced throttle. But on the 4th test yesterday, the same situation occurred, with the flashing engine check light, however after 20 seconds of flashing the light remained on. And it is still on today.

I'm really unsure of whether it is my car or my driving, the car isn't going into limp mode, but there is a noticeable flattening of power.

I've booked it in with Quattro motors again, but wanted to know if anybody else had seen the same?