I have searched and found some info but still am inclined to ask. I know this has been asked but maybe not like this, so dont lock me please. Here goes........ I have my 2.4 a month now and would like to consider some mods. After hours of reading these forums, I am scared to death of aftermarket mods in regards to my warranty. I have carefully decided that I am going to get the GMPP intake, catbback and honed manifold. My question is how much HP is this going to net me? The 07 is rated 173hp at the crank and I am guessing these three mods combined together will gain me about 20hp or so. Am I right in assuming these numbers? If so, will that put me just a notch below a stock SS/SC?

 

i'd say more like 10ish...

the 2.4 is pretty efficent at making power... i think for all that money, a cam job would be more powerful, but not good for warranty work.

all in all, you'll feel it, but it's not gonna keep you with the SCs... yet.

 

^^^ thanks........ I am def getting the intake and exhuast. If the total gain of all three is minimal then I would say no to the manifold..

 

I know you have a 2.4, but here is what the catback did on my 2.0. Hope it helps
https://www.cobaltss.net/forums/show...ight=gmpp+dyno

 

A couple of the guys with just intake had an ecm tune (i think westers or vector) got more torque, hp better shift pints and higher rev limitater, check through the 2.4 section. you can do the tune and as you add more mods you can update

 

exactly Bud and with the tune,which the dealers cant see probly bump you up to 20 25

 

thanks again, Mike. You have answered many of my questions. I am set on just getting GM parts cuz I want to retain my warranty. I live in the sticks and only have one dealer within a decent range. I want no arguements. I am doing all three, and no tune. I do not plan on racing or anything. I am 41 and miss my 70 chevelle SS a bunch (check gallery). I plan on modding the **** outta this thang when my warranty expires. I am going to do the intake, catback and manifold in that order. So far I have the GM pedals, rubber mats and vent shades.

 

So many people always ask what hp gains or what 1/4 times you will get witht his why dont you guys just make a sticky for example

2.4L with intake (dyno's before and after or 1/4 b4 and after)=
2.4L with cat back and headers (dyno's before and after or 1/4 mile b4 n after)=
etc..........
I mean just trying to help cause it seems everyone wants to know once they buy the car.
and stock 2.2L can compete with stock neon, etc..........

 

I clearly see where your comming from now,I have a cool dealer with friends there,so keeping it stock gm parts is a good idea

 

sorry i am too lazy to search, but i was just wondering - are the jbp cams regrinds?

 

from the sounds of it the 2.4 and the GMPP take very fell to the motor and get good gains out of it so ill be geting most the gmpp for mine

 

Im just the tester,these will be cores,stage1 on stock springs and valves