yeecup
ClioSport Club Member
		  
								
								mk8Fiesta ST,172 cup
								
							
						
						
	
						
							
	
						
					
					
						
	
					
				
				http://www.ebay.co.uk/itm/Schrick-R...arts_Vehicles_CarParts_SM&hash=item41735838b8
do these run on standard ecu? Anyone know what sort of gains these give, and are they worth the extra cost over 421's or 438's?
			
			do these run on standard ecu? Anyone know what sort of gains these give, and are they worth the extra cost over 421's or 438's?
 
	             
						
					 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		