Okay, so I haven't done this yet, and it sounds crazy but...
I was watching the Fast and the Furious, and then 2 Fast 2 Furious, and I saw Nitrous being used, which I had never seen before... I remembered I had a few A3-4T model rocket engines (about the size of a AAA, but with a bigger diameter) laying around, that I never used... I thought of putting them on my car, but then it would look stupid... Then I thought of rerouting the thrust using aluminum tubing bent and manipulated to look like exhaust

I thought about it for a few minutes, and I couldn't do my homework because I couldn't stop thinking about the idea. I almost gave up when I couldn't figure out how to ignite them remotely, then I looked at my BCG...I figure, I'll hook up the pcb in parallel to the AAA's, and use forward for one boost, and backward for the next. I'll use two diodes hooked up to the igniters, so it only ignites one at a time... I can't wait to start...
I'm okay if you all think I'm crazy. It is a crazy idea. But just imagine the look of your opponent when they see (I forgot what came out of the model rocket engines, it's been a while! Smoke? Won't look like nitrous!) coming out of what they thought was a mock-exhaust...