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Discussion Starter #1
ok so far i have the gmpp exhaust and intake. car sounds good but could sound better. i have a steel mesh air filter. and 17's that are 8 wide in the front and 7.5 in the back. the car has HORRIBLE take off then it wakes up in stages. about 3k rpms it hits a little and then 5k it hits harder. im going to put a header at least on it. is there any other performance mods i can do without going forced induction? also is there a way to get a mail order tune or something to fix this pathetic lag on take off? other info on the car is its an 09 black 2 door 5 speed 245/40/zr17 tires lowered on sportlines. any help is needed. thanks
 

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go to a muffler shop and get a custom exhaust...get like a 3'' full exhaust or something; catless downpipe, hi-flow cat converter (if you want one; it may be loud without), maybe do some weight reduction; get some sort of tune if possible. idk

anything else is gonna cost a lot of money. maybe try cleaning the MAF, throttle body, and maybe run some fuel injector/fuel system cleaner and see if that restores some power?
 

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yes you can get a tune from trifecta. its about $250 plus a $200 deposit for the installation equipment. you will get your $200 back when you send back the equipment. you get also get the 2.4 intake manifold, aftermarket dp (i suggest the zzp header/dp combo). you can also do some internal work if you want like cams, pistons, rod, etc. it all depends on how much you are will to spend, warranty, and your power goals.
 

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go to a muffler shop and get a custom exhaust...get like a 3'' full exhaust or something; catless downpipe, hi-flow cat converter (if you want one; it may be loud without), maybe do some weight reduction; get some sort of tune if possible. idk

anything else is gonna cost a lot of money. maybe try cleaning the MAF, throttle body, and maybe run some fuel injector/fuel system cleaner and see if that restores some power?
he said he already had an exhaust and you dont get a 3" exhaust unless you're going turbo. but yes for the most part mods will be in the hundreds.
 

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Discussion Starter #5
i dont want to go internal with the motor. just basic bolt ons i guess. would the shop know if i had a 2.4 intake manifold on there? they told me any exhaust wouldnt hurt the warranty as long as its not what caused the problem with the car. and my goals are just to fix the speedometer being about 10 mph off and fix the "turbo lag" when i take off. its not being done to go fast. just a little bit faster. my trans am is to go fast :)
 

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3 i exhuast is pointless on a car almost regardless even with a turbo... you'll onlyget as much performance and flow as the turbo outlet put's out so say that the turbo out let is 2.5 nething over 2.5 piping is a waste of money.... catless down pipe on a 2.2 willl not help him off the line it hurt's you because of the higher airflow with out forced induction trust me i know my car is all top end performance built with just enough power to get off the line like a mini monster...

they way your goin now is good like they trifecta is a good 2.2 tuner and damn near the only BUT make sure your done modding performance wise before doing a tune or you'll just have to retune
 

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you dont have a turbo lag because you dont have a turbo lol. the 2.4 manifold is a gm product so it wont void your warranty. it is also very very hard to prove that a bolt on part caused your entire motor to malfunction. why and how is your speedometer 10mph off btw?
 

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Discussion Starter #9
before i get that zzp header and downpipe.... its not going to sound all riced out is it? i like the deep kind of growl it has now. and do you really think the tune will help with the bog at take off?
 

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Discussion Starter #11
i know it doesnt have a turbo lol that was just the best way to explain the bog at take off and yeah i know i have some fat ass tires but they work.
 

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i know it doesnt have a turbo lol that was just the best way to explain the bog at take off and yeah i know i have some fat ass tires but they work.
thats a huge b*tch lol!

before i get that zzp header and downpipe.... its not going to sound all riced out is it? i like the deep kind of growl it has now. and do you really think the tune will help with the bog at take off?
no its not ricey at all. just make sure you get the magnaflow cat with the dp. dont go catless like that other guy said. trust me haha. and yes the tune will help. with the trifecta tune they will ask what mods you have so they can program it for you and all you have to do is plug and play, but everytime you do another performance mod after that, you will need to retune. that being sad, i suggest you wait until you do all the mods you want and then get the tune because multiple retunes will be a pita.
 

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Discussion Starter #13
ok thanks for the info, but it says the 2.4 intake mani helps on the topend i need more bottom end. so new mods are going to be coming soon. 2.4 intake, zzp header and dp with a cat and wideband :) short throw shifter so maybe my fiance will stop shifting from 1st to 2nd to 1st then go to 3rd lol. and an underdrive pulley and tuned. is there any other things i can do to add more power?

also what size header pipes do i need? and which exit to bolt it to the gmpp catback
 

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1.5-1.75" is suggested and a 2.5" dp. 3" again is for turbo. besides that, thats about it as far as bolt ons. you said you dont want to get into internal or FI, so it doesnt leave you with much. you can always get some spray but unless you actually race its stupid.
 

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Discussion Starter #16
well thats about rediculous!!!! thats all you can do? and i was looking at the cams... you cant use the cam sensor. i thought about the supercharger swap but thats a pain. is it really worth the small gain in power?
 

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cams and sc do a lot man. 2.2l sc > 2.0 sc. im not doing any performance mods except for exhaust, header, dp because im saving for an sc.
 

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cams and sc do a lot man. 2.2l sc > 2.0 sc. im not doing any performance mods except for exhaust, header, dp because im saving for an sc.
i agree i have been messing with some dyno software which is fairly accurate but not perfect and here are some numbers i came up with for a future project

2.2 stock hp. [email protected]
tq. [email protected]

2.2 sc hp. [email protected]
tq. [email protected]
this is with a max of 9psi,custom cam, exhaust,unported heads
 

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i agree i have been messing with some dyno software which is fairly accurate but not perfect and here are some numbers i came up with for a future project

2.2 stock hp. [email protected]
tq. [email protected]

2.2 sc hp. [email protected]
tq. [email protected]
this is with a max of 9psi,custom cam, exhaust,unported heads
315 is WAY up there man. more like 230-250ish, but stock sc is what 205hp? now that 230 im talking about is just the kit and obviously with other mods you could possibly see 315 but idk a 2.2 sc with more than 260hp.
 

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jnicks510 your right what i listed is not any kit just a project i am thinking of. it is a vortech supercharger and a custom cam.

like you said expect 230-250 with the kit since we have a little more compression and size
 
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