# 2003 Cavalier \[ college kid build\] **URL:** \ **Category:** Builds\ **Created:** [September 8, 2008, 5:53pm UTC](https://forums.speedlife.net/t/2003-cavalier-college-kid-build/238820 "2008-09-08T17:53:02Z")\ **Posts on this page:** 1\ **Showing post:** 84
**Author:** ![Smoosh](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/smoosh/32/6419_2.png) [@Smoosh](https://forums.speedlife.net/u/Smoosh)\ **Post date:** [September 13, 2009, 2:49pm UTC](https://forums.speedlife.net/t/2003-cavalier-college-kid-build/238820/84 "2009-09-13T14:49:45Z")
> [@Organized leaf bashing v.whosgoingtothegamethursday?](https://forums.speedlife.net/t/organized-leaf-bashing-v-whosgoingtothegamethursday/22894/3): > > Looks good dude… nice and clean. better than it started out, IMO. > > But why injectors and fuel rail? Cams, and a tune are not going to crank out so much more power that bigger injectors and a bigger fuel rail will be needed… even with a bigger intake manifold. I would think on a 2.0L NA motor, cams, full exhaust and an intake manifold, tuned will make 25WHP more. And how exactly is it going to be tuned? > > What injectors are stock? What fuel pressure? I will admit i know dick about yoru engine in particular, but I know factory injectors are not installed in cars and tuned from the factory so close to max duty cycle, that people add 15hp to them and they need to bump up an injector size. 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… --- _[View the full topic](https://forums.speedlife.net/t/2003-cavalier-college-kid-build/238820)._