It's all in the THC extraction method, firecrackers are a fairly crude way of doing it, often people 'kill' the effect by blitzing the weed at way too high a temperature, or not giving the THC enough chance to bind to the fat molecules.

You'd be far better off making some form of canna butter or oil, then using that.
There's a 'how to' guide here:

http://boards.cannabis.com/recipes/1...ial-guide.html

but you'll find many more on the site.

Good luck and keep at it, when you 'crack' the secret of making it, it'll blow your mind!

Cheers
Flame :thumbsup: