Forge Motorsport's External Wastegate (FMWG001) can be precisely tailored to each individual application with the use of eight different spring configurations. If you are having trouble deciding which spring configuration you should be running please inform us the pressure that you would like the piston to open at and we can advise you which configuration would be best situated for your wastegate. 

Note: Serious or fatal damage may occur to the engine and associated componenets if this product is incorrectly matcheed to the individual engine requirments. Forge Motorsport nor and of its Authoriser Distributors can assume any responsibibilty for any advers effects running from the installation of this product.