Good questions.
The $100 required up front will be put towards our development costs (primarily materials and labor) and will be subtracted from the final price of the downpipe. Since we haven't begun development yet, we haven't a clue as to how much this downpipe will cost as we have to figure out what type of flanges are needed, how much stainless is required, which cats will fit, how many hangers or flex pipes we'll need, etc. But, if you would like a ballpark estimate, it will be around the price of our SPEED3/6 downpipes, which are between $500-$600. Of course we will give a final price before any money is collected so the end users know exactly what they're getting into. But, we need to know that the demand exists before we start doing any work.
As far as adding a cat or not, we will absolutely offer that option, as the downpipe will set a CEL without one. However, we are nearing completion of our Smart O2 Sim, which is a universal emissions related CEL eliminator (and it works 100% of the time on these Mazda vehicles). Like our Standback piggyback, the Smart O2 Sim intercepts O2 sensor signals and conditions them to look like a cat is between the two sensors (signal amplitude on the second sensor is reduced). So if you wanted, you could skip the cat for maximum power gains and just use our Smart O2 Sim.
Development and production should be relatively quick as well since we now have a brand new NC mandrel bender in house, and we've set up robots that help us deburr and plasma cut pipes. As a "for instance," we finished our turbo back exhaust for the SPEED3 in two weeks, and that was while we were still learning how to use the new equipment. So I think we could finish the development of the downpipe in a similar amount of time.
Here are pictures of our SPEED3/6 downpipes:
SPEED3
(SPEED3 dyno reflects gains of downpipe AND catback combined):
SPEED6:
If you've got questions, please post them up!
Jordan