Interesting video comparing a before and after on Redline SI-1. I love this guys no nonsense approach to his videos. He's done quite a bit on Restore & Protect as well! I'm impressed by the improvement on the injectors mostly!
Those are some truly good results, like you said the injectors had a huge improvement. Confirmation of why SI-1 is still my go to, thanks for sharing. I've had some success getting vehicles to run better doing back to back treatments as well.