It might work. I didn't search the site for any technical details, the one page says "for some extra Hp" but doesn;t offer any data to show how much extra. I know that Matrix and Vibe use diferent ECUs, but don't know why. It would be some risk that the performance increase would be worth the cost, and if it even worked on a Vibe. If you're interested in it, then ask them to send you dyno charts to show the increase. Also be sure to find out if the mod requires use of higher octane fuel.For me, mpg is more important than HP, and I might be interested in it if it could add 5 or 10 mpg without killing the power. If I'd wanted power over mpg, I would have gone for the GT. If I really wanted mega power, I probably wouldn't have a Vibe/Matrix.Some poeple say that the ground wire upgrade will give you "some more Hp", and the materials to do that are only about $10.
Some poeple say that the ground wire upgrade will give you "some more Hp", and the materials to do that are only about $10. [/QUOTE]What upgrade and were can I find it?