Just curious what plug yuo lot use in ur LET`s, Changed the plugs n leads the other day, put bosch super 4`s in and used my old magnecor leads from the XE and a new bosch coil lead, drove the car home and it was missing badly under load, i.e. as soon as the car got into boost! Changed the plugs today for champion plugs and the rest of the bosch lead set and now its fine!!
Could it just be the magnecor leads are different for an XE? or does the LET disslike bosch plugs?
What do u use?