BG 182
								
							
						
						
	
						
							
	
						
					
					
						
	
					
				
				So since I got the 182 in Febuary this year in have averaged 32/34 mpg. Two weeks ago I fitted a pipercross viper carbon and put the Ron 98 map on the car and MPG has dropped to 27/28 is this normal?