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

thinking about sticking it out n/a

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Old 04-07-2008, 02:20 AM
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thinking about sticking it out n/a

so like it says im thinking about sticking it out n/a... currently looking for the pieces for ITB's. then header, downpipe, cams, pistons, rods, tune, and by that time a 75 shot. hopefully i should reach about 250 to the wheels or so. only reason im thinkin about going this route now, is cuz everyone goes turbo now... i just htink it would be sick to have a bad ass ss/na. having someone see the ss badges and say "that supercharged?".. then me saying.."nope". the look of "what the ****?!" (for those who dont even know an ss/na existed) will be priceless. tell me what you think please
Old 04-07-2008, 02:28 AM
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i think its awesome, SOMEONE needs to do a fully built 2.4!
Old 04-07-2008, 08:22 AM
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well being fully built just for naturally aspirated with no nitrous would be cool, if you are gonna spray to get 250whp it would just be better to go turbo.
Old 04-07-2008, 08:23 AM
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yea and no one says wow a built motor and you have to use no2
Old 04-07-2008, 09:18 AM
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www.kinsler.com already has a ITB setup i am going to be heading down the N/A build aswell, here is my gameplan



JBP stage two heads
JBP cams
Kinsler ITB
Tune, (vector custom or HPtuner custom)
Vibrant header/downpipe and cat back
Old 04-07-2008, 10:07 AM
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hell yea dude...n/a ftw lol

by the way that itb setup is ssoooooo sick! do you know what pricing is like?

Last edited by ssbalt06; 04-07-2008 at 10:07 AM. Reason: Automerged Doublepost
Old 04-07-2008, 10:48 AM
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i e-mailed them and it can oh roughly to 2200 dollars for the ITBs, you do have some options
Old 04-07-2008, 10:50 AM
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Def go for it.
Old 04-07-2008, 02:29 PM
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damn if i had that kind of money i would!! i might be gutting a hyabusa and start building my own plus the help of forcefab here in town
Old 04-10-2008, 02:27 AM
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what do you all think is the best header/downpipe combo?
Old 04-10-2008, 02:38 AM
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First, come to the Ohio meet on April 19th in Columbus OH...

Second, see this: https://www.cobaltss.net/forums/2-4l-le5-performance-tech-46/lets-discuss-2-4-na-build-99926/
Old 04-10-2008, 02:59 AM
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Originally Posted by REIGN SS
First, come to the Ohio meet on April 19th in Columbus OH...

Second, see this: https://www.cobaltss.net/forums/showthread.php?t=99926


o reign your so silly
Old 04-10-2008, 02:21 PM
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Originally Posted by Dunkinuts
www.kinsler.com already has a ITB setup i am going to be heading down the N/A build aswell, here is my gameplan



JBP stage two heads
JBP cams
Kinsler ITB
Tune, (vector custom or HPtuner custom)
Vibrant header/downpipe and cat back
Looks like the ITB is set up for a throttle cable which we don't have, just something you might want to consider.
Old 04-10-2008, 02:25 PM
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I believe someone also stated you'd have to switch to speed density with ITBs

how in depth is tuning for ITBs anyway? is it something that HPT can even handle?
Old 04-10-2008, 02:33 PM
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Originally Posted by Brandon97Z
Looks like the ITB is set up for a throttle cable which we don't have, just something you might want to consider.
Originally Posted by IonNinja
I believe someone also stated you'd have to switch to speed density with ITBs

how in depth is tuning for ITBs anyway? is it something that HPT can even handle?
well Kinsler said they could provide all that is needed to make it run. ECU, fuel pumps, injectors etc etc. and that throttle cable i think is an option kind of thing, he talked about that in the emails but i deleted them b/c i am doing that down the road unless Hahns intake manifold proves to be awesome.
Old 04-10-2008, 06:45 PM
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Personally, a N/A 2.4 build would be great. However in the long run, more expensive.

You can not tell me once you get the feel for "220whp" your not curious or thinking of ways to make it 300whp.

A Turbo kit would ideally be the cheapest thing in the long run.

Want more power? Get Better Injectors/Tune, then install a Boost Controller...

Maxing out the stock turbo? fine, spend $1200 for a bitchin big turbo...and your set for a few hundred extra HP.



I was trying to do the whole N/A build...but ultimately, its too cost worthy, plus i cant get the HP/Drivability that i want.

But ya, I concur all the time.

People look at my 4dr and say "Thats Supercharged!"...I respond with "No its not", then id have to go into a big drawn out explanation as to why theres 2 "SS's" and the difference between the 2...

If i ever get bored, or dont want to explain it, i just say "I put an SS badge on there to be cool".

Now, i can reply with "No its not" and keep a smile on my face.


Great luck with the N/A build though.

Last edited by Turbo06Sedan; 04-10-2008 at 06:45 PM. Reason: Automerged Doublepost
Old 04-10-2008, 06:48 PM
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but if you do a fully built n/a motor and then say hey i want more power its alot easier to just slap a turbo on, tune it and then drive without having to worry about breaking ****
Old 04-10-2008, 06:53 PM
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That is true to an extent.

If you made your car a 300whp N/A car...then threw a turbo on, your car would run like ****.

Cams would be the big killer in it, leaning more to a N/A tune.



But in all reality youd be spending more, since the 2.4's have been proven to handle over 400+hp on stock internals,

Youd spend $4000(approx) for the turbo kit to hit 400hp.
or
$5000+ for a N/A build.

Just because it has "built up internals" hardly means its more reliable.
Old 04-10-2008, 07:02 PM
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Originally Posted by Turbo06Sedan
That is true to an extent.

If you made your car a 300whp N/A car...then threw a turbo on, your car would run like ****.

Cams would be the big killer in it, leaning more to a N/A tune.



But in all reality youd be spending more, since the 2.4's have been proven to handle over 400+hp on stock internals,

Youd spend $4000(approx) for the turbo kit to hit 400hp.
or
$5000+ for a N/A build.

Just because it has "built up internals" hardly means its more reliable.
I couldn't agree with you more.
Old 04-10-2008, 07:28 PM
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Originally Posted by IonNinja
I believe someone also stated you'd have to switch to speed density with ITBs

how in depth is tuning for ITBs anyway? is it something that HPT can even handle?
HPt would not be able to suppot the ITB's because we can not do a speed density tune, you could try EFI Live and use the vitrual VE tables to tune for it but I would not want to trust that for day to day driving. You could do the ITB's and build a custom air box to go over the throttle bosys and put the MAF in there.
Old 04-10-2008, 11:03 PM
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Originally Posted by Turbo06Sedan
That is true to an extent.

If you made your car a 300whp N/A car...then threw a turbo on, your car would run like ****.

Cams would be the big killer in it, leaning more to a N/A tune.



But in all reality youd be spending more, since the 2.4's have been proven to handle over 400+hp on stock internals,

Youd spend $4000(approx) for the turbo kit to hit 400hp.
or
$5000+ for a N/A build.

Just because it has "built up internals" hardly means its more reliable.
minus the ITB, still not sure i am heading that route, but keeping N/A is cheaper then a turbo and more respect in my book.

JBP stage 2 heads $2100
JBP LE5 cams $575
Vibrant cat-back $500
Vibrant Header $600
K&N intake $250
Vector Tune $475
----------------------------------
$4500


now just for the turbo kit you are paying $3569.15 which is a limited $500 bucks off for a sale. now that isn't a tune, intake, or exhaust. sure you could might be a little faster but not enough for me to spend that much more.
Old 04-10-2008, 11:54 PM
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Originally Posted by outtamymind
but if you do a fully built n/a motor and then say hey i want more power its alot easier to just slap a turbo on, tune it and then drive without having to worry about breaking ****
not completely true. most n/a builds will involve higher compression, doing this with FI can be scary to say the least.

Originally Posted by Dunkinuts
minus the ITB, still not sure i am heading that route, but keeping N/A is cheaper then a turbo and more respect in my book.
and respect is right under 60' on the timeslip

If you do the itb's and go SD, keep in mind you'll need to have the map sensor located somewhere and hope that cyclendar never loses compression/leaks because it'll be in control of overall fueling....

Last edited by bigworm; 04-10-2008 at 11:54 PM. Reason: Automerged Doublepost
Old 04-11-2008, 08:37 AM
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Originally Posted by Dunkinuts
minus the ITB, still not sure i am heading that route, but keeping N/A is cheaper then a turbo and more respect in my book.

JBP stage 2 heads $2100
JBP LE5 cams $575
Vibrant cat-back $500
Vibrant Header $600
K&N intake $250
Vector Tune $475
----------------------------------
$4500


now just for the turbo kit you are paying $3569.15 which is a limited $500 bucks off for a sale. now that isn't a tune, intake, or exhaust. sure you could might be a little faster but not enough for me to spend that much more.
The turbo kit includes its own intake and tune if you are talking about hahn, exhaust really isnt even needed since hahn makes all its power claims on the stock exhaust. bang for buck turbo is way better.
Old 04-11-2008, 12:52 PM
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there are a few options for us. if this wasn't my dd, and jsut a 1/4 beast...i would have gone all motor/auto/nitrous...but since it's my d/d, then s/c'ing was the most cost effective. $700 more for a clutch + 2.8 and I've got 275 reliable whp.
Old 04-11-2008, 01:27 PM
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still i like the N/A with some weight reduction. sure a blow off valve and supercharger whine are tempting but so is throttle response.


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