I actually went with a brand called Red Bullet for the solenoids with great success. I can definitely feel a difference in acceleration and the engine is actually louder now. They have great reviews on other cars like Prius believe it or not and if research is done they can be found. They are also a bit cheaper than Quantum. Thanks IM Matt for sharing the Quantum solenoid idea tho cuz without that I would have never looked up solenoid upgrades for our IMs again.
Link. I like the idea but $500 is way too much.