Thought I'd post this up, as they don't come up for sale very often, and I've seen a few sold and shipped to Oz in the past.

http://www.trademe.co.nz/Browse/Listing.aspx?id=274697950

Quote:

The MSD Blaster 2 is a round cylinder type.

The alternator is a form of electromagnet: As the alternator spins, the magnetic fields cut through each other to produce a voltage/current output.
Higher electrical load requirements by the vehicle mean stronger internal magnetic fields, which equates to greater rotational resistance (the alternator is harder to turn, so robs more hp from the engine).

A friend has developed a system where he can open circuit his alternator via a dashboard mounted switch. It gives him extra hp for hillclimbs etc (dyno proven), but can only run for a short time (otherwise it kills the battery). This is dependent on your ignition system though - his is aftermarket (distributorless with coilpack) so doesn't seem to suffer when voltage drops from 14v to 12v.

Thanks dd. I'd tried searching the forum but couldn't find anything! I gotta get used to the separate wiki pages...

I was planning on using a performance muffler, but wasn't sure if one muffler will be enough. I don't want it too loud or raspy, but it really needs to breathe with the cam and injection.

I'm planning on building a new exhaust, and was hoping to get some advice on what works with an A12/A15 engine.
I have an A12, bored out, with A15 head (approx 5mm planed off head/block), cam, double valvesprings, and Hilborn injection.
I have some Coby headers, and was thinking of using 2" pipe, with a single muffler. Would this be too loud or raspy, or have too much drone? Would I need a "hotdog" style muffler too?
Cheers