I just wanted some help doing to math considering I have no idea how much HP any of the following gives me:

Injen CAI (Running it into the bumper)

CA 1.7 primaries w/2.25" collector

Custom 2.5" exhaust from the header back (no converter)

wize 4" N1 style muffler

B&M Shift+

So how much of a gain would I experience with all of this from 148 stock HP?

 

15-(20hp lucky) but its not the peak hp that matters its how it affects the power band, im sure u will see over 20whp mid power

 

Get it tuned and u will be able to tell the difference

 

Thank you that's all I needed.

well from what I have gathered I don't need a tune until I do something drastic like change my throttle body to a 2.4.

 

Well a tune would be good. But if u r going to do that buy the whole 2.4 intake mani kit then tune.. u will really notice a difference

 

yeah that's what i was planning and supposedly it helps with the higher end of the cobalt more than the lower which is great cause 4 cylinders are just horrible passed 100 mph

 

uhh. . . . you'll get better fuel economy lol!!!

oh and anytime you change anything.. . . . . you should tune for it.

 

AFAIK that is the truth. With the options available for older 2.2 cobalts, many people have come to the conclusion that its more cost effective to tune once after all of the hardware has been installed. (certain mods require a tune while many common and basic ones do not)

 

yeah. i was just generalizing. He doesn't *have* to, but he *should*

 

Def get a Trifecta tune. Don't install the shiftplus. When you get a Trifecta tune, it'll do the same thing as the shiftplus. And as a bonus, you won't have to splice into your transmission wires. I've had some bad experiences splicing into powertrain wires with other cars. I've never tried it on the Cobalt.........and Never plan to.

 

My opinion: Get the Injen CAI. Get a real header, not a shorty exhaust manifold, with smaller primaries and a 2.5" collector.

Get Trifecta.. You won't need Shift+

 

If you're auto you'll probably be looking at around 135 whp. Thats what I sat at with around the same mods and I'm also auto.

 

Alright well I just canceled the order for the shift+ saved me 50 bucks right there. Thanks for the help. I just got my rims a few minutes ago too which is awesome . I'm gunna get the rims painted the same color as my car but with black accents can't wait.

 

OOOOOooo Pics!

 

What do you mean "Get a real header and not a shorty exhaust manifold?" Is the Cobalt Addiction header no good? Or is there just better out there. Be real with me because I can still cancel all of this and get all of my money back cause it hasn't shipped yet. So I need to know.

 

I believe he is refering to a long tube setup since you have already deleted the cat. Check out the Vibrant Long tube. The runners are a little big but they will help a little more on the top end.

Also the shift + isnt going to add HP, it will just get annoying if you keep it on stage 2 durring light acceleration, I know, I have one.

 

I canceled the b&m shift+ and the CA header so I'm going to look for something else. could you give me a site or two I could check out?

 

Check ottperformance.com I think they have a vibrant setup for sale. I know TTR does but I really dont like how they come out with "Custom" parts when they really dont do any R & D, they just copy competitors.

 

thanks but im just gunna go with CIA.

 

It appears that you need to lower the car...lowering springs...take your pick....Progress, Eibach (Pro kit or Sportline), H&R, Pedders. You can go cheaper like SSC, Zenn, Tenzo-R, but I know nothing about those springs and don't personally recommend them.

And if you have the money to do it, get some SS/TC struts and shocks...that way you can put the springs on the struts and install as a complete set...same with removal of the old ones....makes it quicker. Wish I would've done it that way.

What exactly is it you're talking about? I know the intake and full exhaust will help economy and the tune will as well, but the 2.4 IM will not. Not sure if it will make economy worse, or keep it the same, but it won't improve from it.

 

i got better dyno sheet with a short ram intake instead of a cold air intake

 

I know I've already ordered the eibach sportline(since it's an ls) they should be here early next week along with my injen CAI. and no i don't have the moeny right now to get those. i wish i did but i do have a strut compressor so ill just put it on there and drop the spring on.

 

Well the 2.4 IM would allow for more air to get into the engine therefore it should increase economy a bit too. I would get a tune with the 2.4 IM though cause you'll see even better gains and economy with it.

 

Technically, the CAI should give you more overall HP than SRI.

Meh.

 

uh. . . the op states nothing about a 2.4 intake manifold. . . not sure what your talking about lol.