Here Is The Question I Have.do You Think There Is Enough Vacuum In The Nissan Vacumm Canister When You Are Racing Down The Track To Open In The First 3 Gears..i Know It Open In 1 And 2 But Dont Feel Any Differance In 3rd And Think That There Is Not Enough Vacuum To Ope It All 3 Times When Racing.anyone Have Any Thoughts About The Vacuum Or Should I Just Buy A Bigger Cannister.