2.4L LE5 Performance Tech 16 valve 171 hp EcoTec with 163 lb-ft of torque

Mod questions? 175 whp? product suggestions?

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Old 05-25-2012, 06:35 PM
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Mod questions? 175 whp? product suggestions?

Hey yall,

Been doing alot of looking and searching through the site in the last week. Im looking to put a little money into my 'balt but not a fortune. Wondering if it will be possible to make 175 whp with the mods im looking at:

-ZZP High Flow Intake Tube
-K&N drop in filter
-LSJ Throttle Body
-ZZP Mid-length header and downpipe
-Catback exhaust (undecided on which)
-Tune

Does anyone have any of these and can give me some opinions on them? Is 175 whp doable with these mods?

Also looking for suggestions on exhaust... I was looking at the SLP LM II however speaking with another member he said it is quite loud. Im looking to keep the car as quiet as possible while still gaining performance. Ideas?


ZZP Drilled and Slotted rotors, anyone have them??? I have to get new breaks and I was looking into these with Hawk HPS pads. Any reviews would be a HUGE help.

Thanks!
Old 05-25-2012, 06:39 PM
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You will be very close if not at your goal with the bolt ons.

I have ZZPs 2.5" catback and its pretty quiet
Old 05-25-2012, 06:53 PM
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Catback is unnecessary, you'll see about 3-5whp from it. If your on a budget and want it quiet just get the CTI over axle piece. Besides that your list looks good. And I love my Trifecta tune
Old 05-25-2012, 06:54 PM
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Gmpp cat backs are nice too. Lol and the alp LOUDMOUTH 2 u thought would be quiet? Hah
Old 05-25-2012, 07:06 PM
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a guy on here dyno'd at 201whp with intake,catback,lsj tb,headerdownpipe and trifecta tune
Old 05-25-2012, 07:10 PM
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Originally Posted by K-Train04RL
Gmpp cat backs are nice too. Lol and the alp LOUDMOUTH 2 u thought would be quiet? Hah
Well not necessarily quiet but the guy I talked to said it was very loud. I dont mind a bit louder than stock but I dont need it as loud as my Camaro lol
Old 05-25-2012, 07:45 PM
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auto or standard?
Old 05-25-2012, 07:54 PM
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Originally Posted by chevygirl2006
a guy on here dyno'd at 201whp with intake,catback,lsj tb,headerdownpipe and trifecta tune
That guy posted two above you...
Old 05-25-2012, 08:18 PM
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o well i didnt know who it was.
Old 05-25-2012, 09:10 PM
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Yeah the slp is pretty loud and with a catted cti downpipe my exhaust pops pretty loudly on decel. I like it but it can be very loud at times. I will admit sometimes I do wish it was quieter especially for a dd lol
Old 05-25-2012, 10:26 PM
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Its an Auto. Wanted a SS/SC however my wife wanting me to get an auto limited me to the NA.

This may sound stupid, but what is a CTI?
Old 05-25-2012, 10:28 PM
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Ya automatic will rob power. And I have no idea what a CTI is
Old 05-25-2012, 10:38 PM
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Originally Posted by Ltguy
Hey yall,

Been doing alot of looking and searching through the site in the last week. Im looking to put a little money into my 'balt but not a fortune. Wondering if it will be possible to make 175 whp with the mods im looking at:

-ZZP High Flow Intake Tube
-K&N drop in filter
-LSJ Throttle Body
-ZZP Mid-length header and downpipe
-Catback exhaust (undecided on which)
-Tune

Does anyone have any of these and can give me some opinions on them? Is 175 whp doable with these mods?

Also looking for suggestions on exhaust... I was looking at the SLP LM II however speaking with another member he said it is quite loud. Im looking to keep the car as quiet as possible while still gaining performance. Ideas?


ZZP Drilled and Slotted rotors, anyone have them??? I have to get new breaks and I was looking into these with Hawk HPS pads. Any reviews would be a HUGE help.

Thanks!
dont waste your money on it sell it and save up for a LNF 260hp stock lol
Old 05-25-2012, 10:42 PM
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LNF ftw
Old 05-25-2012, 10:50 PM
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I would love an LNF but like I said, my wife wanted me to buy an auto...

Im not looking to go super fast, I have another car for that. Just more passing power and to have a bit more fun with. Plus I have to drive this thing in the winter and the lake effect isn't exactly friendly.
Old 05-25-2012, 11:15 PM
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Originally Posted by Ltguy
I would love an LNF but like I said, my wife wanted me to buy an auto...

Im not looking to go super fast, I have another car for that. Just more passing power and to have a bit more fun with. Plus I have to drive this thing in the winter and the lake effect isn't exactly friendly.
haha well there u go get rid of the wife and get a LNF and people drive there LNFS in the winter too no biggie!
Old 05-25-2012, 11:53 PM
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Cti is a brand. What is being said is that the stock exhaust is 2.5" till it goes over the axle then it reduces. So cti makes an over the axle pipe that you can weld a muffler of your choice to and go full 2.5" exhaust. However after buying the pipe muffler and having it welded together you can be close to the price of a catback. If your worried abut noise level you can do the header and downpipe and use the stock catback. It will get a bit more pep to it without gaining much noise. The stock ss/na catback is the same one use on the supercharged cobalts. Only the downpipe is different. So maybe buy the header and downpipe first and see what you think. Then if you still feel you need the catback go for it.
Old 05-26-2012, 12:00 AM
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Originally Posted by Ltguy
Its an Auto. Wanted a SS/SC however my wife wanting me to get an auto limited me to the NA.

This may sound stupid, but what is a CTI?
Nah not stupid at all, its Custom Tubing Inc. They make a piece that replaces the restrictive 2.25 inch bend in the SS/NA and LSJ catbacks. Once you replace this your exhaust will basically flow as well as any cat-back exhaust. Here's the link:

Cobalt SS


And as to getting a "real" SS; yes the SS/NA isn't fast and doesn't handle as well as LNF's of LSJ's but it can still be a great car. Modding it is still fun, as is driving it with the right mods. But if you want something with real power don't bother modding it, it works for many of us because it is cheaper, insurance is cheaper, it doesn't have the problems that modding a F.I. entails and it can sometimes be quick enough for most of us
Old 05-26-2012, 12:06 AM
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Originally Posted by noorjariri

And as to getting a "real" SS; yes the SS/NA isn't fast and doesn't handle as well as LNF's of LSJ's but it can still be a great car. Modding it is still fun, as is driving it with the right mods. But if you want something with real power don't bother modding it, it works for many of us because it is cheaper, insurance is cheaper, it doesn't have the problems that modding a F.I. entails and it can sometimes be quick enough for most of us
This I can agree too I would much rather put a couple grand in my Camaro than my DD

How do you like your Bad Mab?
Old 05-26-2012, 12:09 AM
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Originally Posted by CordiaDOHC
Cti is a brand. What is being said is that the stock exhaust is 2.5" till it goes over the axle then it reduces. So cti makes an over the axle pipe that you can weld a muffler of your choice to and go full 2.5" exhaust. However after buying the pipe muffler and having it welded together you can be close to the price of a catback. If your worried abut noise level you can do the header and downpipe and use the stock catback. It will get a bit more pep to it without gaining much noise. The stock ss/na catback is the same one use on the supercharged cobalts. Only the downpipe is different. So maybe buy the header and downpipe first and see what you think. Then if you still feel you need the catback go for it.
Awesome, thanks! Im planning on doing things one at a time so if I get to a point where im happy without doing more then I will just stop.
Old 05-26-2012, 11:15 AM
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You could just buy ZZPs turbo kit...then your wife thinks youre "limited" still but not really (you will be faster than a LNF)
Old 05-28-2012, 11:44 AM
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Originally Posted by nhanson
You could just buy ZZPs turbo kit...then your wife thinks youre "limited" still but not really (you will be faster than a LNF)
That I have to disagree with.
Old 05-28-2012, 11:51 AM
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He meant stock LNF.


Originally Posted by Ltguy
How do you like your Bad Mab?
It's a good mod, but the quality is hit-or-miss. I bought mine during a group buy and the flange was horribly curved, a sign that it was quickly welded and not prepped properly. But Brad was a good guy about it and after I felt I had tried everything I contacted him and he sent me a new one relatively quickly.

It does give a noticeable hp gain though, and it's shiney
Old 05-28-2012, 12:21 PM
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The SS/NA may not be fast but it certainly has potential when either turbocharged or supercharged.

I'm not looking to go fast right now either. My first upgrades will be FE5 struts/shocks with Pedder Springs and a rear sway bar from Powell.
Old 05-28-2012, 12:37 PM
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Originally Posted by Chibits12
The SS/NA may not be fast but it certainly has potential when either turbocharged or supercharged.

I'm not looking to go fast right now either. My first upgrades will be FE5 struts/shocks with Pedder Springs and a rear sway bar from Powell.
Great first mods, if you have a little extra cash swap the rears for koni's. And I love my Powell Hardcore bar


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