"GM Racing began the tuning process on a Heinen-Freud water-brake dyno using the stock intake and exhaust manifolds and a modified stock downpipe plumbed without muffler directly into the dyno cell's exhaust removal system. It turns out a well-tuned stock 10:1 2.2-liter Ecotec in the above configuration actually develops 168 crankshaft hp (which is above the factory rating of 140-150 as installed in various vehicles in the United States and Europe)"
The above article is not new, but is new to me.
At this time they have 800 hp on a Ecotec, and the latest is 1200 hp.
But for a stock 2.2 with tuning with only the removal of the muffler along with a modded downpipe gives 168 hp.
This backs up what many with a CAI and 2 1/4 exhaust with 4-2-1 header with no tuning claims for output.
I was a little skeptical that a Ecotec 2.2 with these few mods would give around 165 hp without tuning.
Imagine those mods with tuning.
I can guess but that doesnt help.
The 2.4 SS is about $5k more than the 2.2.
For way less than $5k the 2.2 can attain a higher output. Of course a tweeked 2.4 SS with same mods will win, but I am looking at the savings of being able to be just as fast and attain the insurance of a stock 2.2 Cobalt LS.
HP Tuners: get off your duff and do your stuff for the 2.2 Cobalt...
Does anyone know if they are anywhere close to figuring out the 2.2 Cobalt program?
I dynoed 151/154 with just an intake and exhaust on mine thats well above 168 crank
1989 Turbo Trans Am #82, 2007 Cobalt SS G85
With your intake and exhaust, along with tuning, how much do you think you can get?
Maybe another 15hp?
What is the point of making this post, seeing as how it contains information that has been around for years now, and there is no question about anything performance related?
If your only question is about HP Tumers progress why not go to THEIR site and ask?
I used to race cars, now I race myself.
5K PB: 24:50
10K PB: 54:26
Hypsy STFU
whats the point of your post?, exactly same as all the rest there isnt
1989 Turbo Trans Am #82, 2007 Cobalt SS G85
Matt: you know I'm not gonna STFU, especially for someone like you.
I used to race cars, now I race myself.
5K PB: 24:50
10K PB: 54:26
You two both need to quit this little feud.... seriously.
Anyway, I can't help but agree that this post is pointless since it doesn't bring up anything that wasn't already known and furthermore, the only thing you're asking is about the cobalt. Not a J-body. Hence, ask over on cobaltss.net or hptuners' forums.
Arrival Blue 04 LS Sport
Eco
Turbo
Megasquirt
'Nuff said
I'm gonna call matt's dyno numbers bogus. Yes, this is very pointless post
Built, bottled, ready for 11s. 14.446@93.74mph, 1.848 60' N/A.
I had the following mods done when that number was put down
RSM Lower Mount
RK Sport Upper Mount
62MM Throttle Body
RSM Intake
Weapon R 4-1 Header
Magnaflow High Flow Cat
Magnaflow Resonator
Borla XS Muffler
2.25 piping
Fidanza Flywheel
Spec Stage 1 Clutch
Denso Irridium Plugs
RSM Aluminum Crank Pulley
No internals, no cams, no MSD, no fuel system or ECU programming (this was a year before HP tuners came out from April of 05)
1989 Turbo Trans Am #82, 2007 Cobalt SS G85
Then I guess ^ is more than -
Rodimus Prime wrote: ... 151/154 with just an intake and exhaust ...
I consider a intake to be the whole thing from filter to manifold and the exhaust being the entire system
A pulley and a flywheel isnt making that much difference
1989 Turbo Trans Am #82, 2007 Cobalt SS G85
Rodimus Prime wrote:I consider a intake to be the whole thing from filter to manifold and the exhaust being the entire system
A pulley and a flywheel isnt making that much difference
Yeah ok. Stop being a little ricer kid. Everyone knows a intake is just that. A pipe leading from the TB to a filter. If not then when you bought a intake it would come with a 62mm TB, and the manifold. Same thing on the exhaust side.
FU Tuning
Rodimus, thank you for the dyno with list of mods.
That is one thing I have been wanting to see, is an actual dyno with list of mods done.
The post already pointed out that this is new to me and many probably already know.
So, for the ones who knew this info and are upset at this post, why the negativity?
Just go to a post you do like and let this one inform the people who did not know this already.
I personally think that the 2.2 Ecotec with just a hacked off muffler and modded downpipe with tuning giving almost the same output as a Cobalt SS 2.4 is pretty interesting myself. It is about performance, and shows people that a high flow exhaust and a tuning can make some pretty high output alone. A 4 banger gaining about 25 or so hp at the crank from a couple mods is actually a big deal.
Seeing people like Rodimus and his efforts to enhance his ride is very commendable.
Now I can gauge what I want to do and get a good jist of what output my car will be.
I do not understand the people who go to a site that is for an enthusiast of whatever subject the site holds and crap on the people who are enthusiastic about that subject.
ummm...first part of that say "well tuned". if you read the whole article it becomes obvious they had the ECU tuned for 90-something octane gas, cause they were getting ready to spray nitrous to the motor. so that means an ecotec with a full tuned 90+ octane ECU program, open TB and huge exhaust after the factory manifold will make 168 hp...which is totally within the realm of reason, and shouldnt be a big suprise. id say a good chunk of it is in the ECU tuning...ecos are like 10:1 compression stock, so being tuned for 87 stock is leaving a bit of power on the table to start with. also..if they started with the 150hp version (european i think) then the gains are all the less impressive.
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Actually when i bought my intake it did come with the TB, the old RSM combo deal thats the only way you could get it, you couldnt buy the intake seperately but if you want to be a technical dick about it I was referring to the intake side, and exhaust side of the motor that being everything from the cylinder head out
Ricer kid? Who the @!#$ are you, im not the one with APC clear corners listed in my mods
1989 Turbo Trans Am #82, 2007 Cobalt SS G85
SAE GROSS style hp measurement FTL.
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-----The orginal Mr.Goodwrench on the JBO since 11/99-----
Downpipe? I'm unfamiliar with this term...
Is that just the exhaust manifold?
Buddy Club Ecotec Cavalier
* More to come *
correct me if im wrong but a down pipe connects the turbo exhaust outlet to the rest of the exhaust system, or any lentgh of pipe that runs between the headers and the catalytic converter. and this thread really is pointless, its called the search button, use it.
many changes in the making
my favorite part about doing bodywork,.......... bondo bugers
What would you do to 'mod' the downpipe? Increase the size?
Buddy Club Ecotec Cavalier
* More to come *
pretty much.
many changes in the making
my favorite part about doing bodywork,.......... bondo bugers
