I have had a blanking plate with a hole in on my EGR for the last year or so, I recently found out that the car is a euro 3 which means I can use a full blanking plate without the car showing the EML light. Last night the car was running fine until changed the blanking plate and now I have hesitation when driving/accelerating under 2500rpm, when above there is no hesitation. The car seems faster when above 2500rpm also. The blanking plate with a hole that was taken was dirty, now it's blanked surely it doesn't matter? Please help!