the injectors are because the stock injectors are maxed out on a factory tune with no mods at all… i had to go with an 02 fuel rail because the lsj(cobalt ss) injectors will not fit into the 03 rails without spacers and id rather a direct fit…
and with the reading ive done on the manifold people have gotten 15 to 20 whp with proper tuning… and the cams are pretty big… im not sure on the specifics… there at my dads house currently… but its like a 440 lift and i think .52 duration…
im thinking with the cams and the manifold it should be a bit more enjoyable…
oh and im getting it tuned at synapse… they did great things with there development cobalt so im hoping the 2.4 ecotecs wont differ too much from the 2.2 eco’s…
so we will see…