Question about Performance chip for Mazda3

[MM3Canuck]

So I was browsing through ebay this morning, and I came across this listing.

Can anyone explain if this thing actually works, and if it really does NOT do any harm to the engine. and why it is so cheap.

I would not mind some more hp, i just dont want to harm my engine, or simply buy useless crap from ebay.

Thanks guys

http://cgi.ebay.com/ebaymotors/PERFORMANCE-CHIP-MAZDA-3-MAZDA-6-2002-2005-2006-2007_W0QQcmdZViewItemQQcategoryZ33597QQihZ002QQite mZ120163957370QQrdZ1QQsspagenameZWDVW

[numbnuts22715]

It wont work.
The way they worked with hondas was that they like tricked the computer into thinking it saw cooler air or something like that.
I dont remember the specifics, but everyone said NOT to get it.

[Falconx84]

I think it will work at least for a couple hp at the expense of engine life

definitely would NOT recommend it... anything that tricks the computer into modifying AFRs is not a good thing. Theres a reason the fuel maps are setup the way they are.

[oskinosmee]

Dont do it i screwed up my 93 mx-6 ls with one of those.