does anyone know where i can get a heavier spring for a turbonetics evolution wastegate? i cant find one stiffer than the 9 psi spring. looking more for like a 17-20psi spring

 

You can always double two springs up, and 2 9lbs springs will give you 18lbs? I don't believe you will find a spring that heavy, and especially for a 35mm wastegate. Plus you don't need a wastegate spring that high if you have an electronic boost controller, and if you don't, you probably should get one........... If you what to run 18-20psi, then run a 9-10lbs spring, and let the boost controller do the rest....

 

i have a turbosmart dual stage manual boost controller. i plan to run 18-22psi low boost(depending on the power yielded) and 35ish psi high boost.

 

anyone?