HP in a bottle?
 

Now I have to admit I am very skeptical about stuff like this but I watch Tuner Transformation religiously and find their show very informitive and honest and they had a segment about EXP4 Additives and did some dyno runs with both their oil and gas additive products and they showed a 9hp gain. Check it out and tell me what you think. http://www.exp4additives.com/default.asp