New performance mod for the 2.2 enignes...
Senior Member
Joined: 06-01-2008
Posts: 2,762
From: arlington texas
I am getting 42-43 mpg at 60 mph up 8 mpg but I also ported my cast iron header at the same time and put on a cold air intake.I now have alot of torque steer when I floor it.So it is making more horse power as well as increased mpg never got it to the dyno before I put it away for the winter.
Senior Member
Joined: 03-08-2008
Posts: 505
From: United States of Texas
It helps a little
It helps a little all the way from idle to top RPM with the biggest gains up top. I noticed improved performance as soon as I did it. I have not noticed any change in mileage good or bad. And the performance gains while noticeable do not expect too much. Curly
Senior Member
Joined: 06-27-2006
Posts: 732
From: Kingsville On
https://www.chevyhhr.net/forums/2-2l-performance-tech-5/how-build-your-own-header-save-%24300-bucks-15656/
Senior Member
Joined: 03-08-2008
Posts: 505
From: United States of Texas
GTO Mike
GTO Mike, I agree with you that you have to open up the intake and exhaust if you really want to see an improvement. For my car I opened up the intake with a 2.4 intake manifold and an Airiad intake filter.
For the exhaust I put a complte 2.4 exhaust including downpipe and cat and added a Cherry Bomb Vortex muffler. Now the exhaust really flows and sounds good.
My mileage and performance has been good but not as consistant as I expect. My mileage at 70 is about 35-36 up from 31 stock.
I will be doing a Trifecta tune onthe car soon and when I do I will put on a 2.4 Throttle Body also. I expect the mileage and performance to increase when I tune and calibrate it to the new mods.
My question to you is: How has your mileage been lately? Best? Do you really think the ported exhaust manifold makes that much of a difference?
For the exhaust I put a complte 2.4 exhaust including downpipe and cat and added a Cherry Bomb Vortex muffler. Now the exhaust really flows and sounds good.
My mileage and performance has been good but not as consistant as I expect. My mileage at 70 is about 35-36 up from 31 stock.
I will be doing a Trifecta tune onthe car soon and when I do I will put on a 2.4 Throttle Body also. I expect the mileage and performance to increase when I tune and calibrate it to the new mods.
My question to you is: How has your mileage been lately? Best? Do you really think the ported exhaust manifold makes that much of a difference?
Senior Member
Joined: 06-27-2006
Posts: 732
From: Kingsville On
For the exhaust I put a complte 2.4 exhaust including downpipe and cat and added a Cherry Bomb Vortex muffler. Now the exhaust really flows and sounds good.
My mileage and performance has been good but not as consistant as I expect. My mileage at 70 is about 35-36 up from 31 stock.
My question to you is: How has your mileage been lately? Best? Do you really think the ported exhaust manifold makes that much of a difference?
My mileage and performance has been good but not as consistant as I expect. My mileage at 70 is about 35-36 up from 31 stock.
My question to you is: How has your mileage been lately? Best? Do you really think the ported exhaust manifold makes that much of a difference?
You do not need to change the exhaust on a 2.2 if go back to my post there is a link about the GMPP cat back exhaust.For $600 bucks and half a day labour it gave them 1.2 HP increase.
The down pipe on the 2.2 is 80 mm inside diameter I could only port it out to 57 mm the stock manifold is only 45.You can run with just the header and the exhaust still has to get out a 45mm hole.The bigger you make the pipe behind the manifold is only making it worst you have to keep the velocity up.
When you have a big diameter exhaust pipe and a small diameter manifold it makes it harder for the engine to get rid of the exhaust gases.It`s like a 1/2 '' garden hose going into a 1'' hose the amount of water volume coming out the 1'' hose is still 1/2'' you get no where.
My mileage is always in the low 40`s I only have 3,100 mile on it right now she`s back in hibernation till May.I should see a little more gain by the time it hits 10,000.
Member
Joined: 10-22-2008
Posts: 62
From: Vancouver
lil tune
Im startin to get the feeling that a CAI, 2.4 intake and ported header are just the right mods for the 2.2 .no more on the back end.
The throttle body though, let's talk about that. More air runnin thru her means a little leaner mix??
The throttle body though, let's talk about that. More air runnin thru her means a little leaner mix??
Member
Joined: 10-22-2008
Posts: 62
From: Vancouver
point
The problem with installing the 2.4 throttle body on the 2.2 is the ECM will go into REDUCED ENGINE POWER mode because the ECM will see more airflow than it expects. The Trifecta tune addresses this issue as well.
I did find this on a trifecta tuning thread.
I did find this on a trifecta tuning thread.
Senior Member
Joined: 03-08-2008
Posts: 505
From: United States of Texas
True Dat
The 2.4 throttle body is much larger and will not work right unless you do a Trifecta tune to match the system. I have the throttle body and will install it when I do the tune. That is when I expect it will really start performing as I think it is supposed to.
More air in and more air out should mean a leaner mix but your car has oxygen sensors and it compensates some. A Trifecta tune will properly calibrate the system for the mods you have and increase the timing for best performance. Making the motor more effecient will also increase mileage some. The factory settings are fairly conservative and generic to fit all kinds of drivers and uses.
To be realistic I do not expect my 2.2 to perform like a LT1 350. When it is all said and done I am expecting atleast as good as the 2.4 maybe a little better but more effecient and better mileage than a 2.4.
That is really my goal to get the most performance an mileage out of this motor what ever that is. I believe this is the way to do it and will continue making the mods and testing until it is where I think the optimum is.
My city mileage has went from 21 to 25 and the highway mileage at 70 has went from 31 to 35, I believe there is more there. I believe (hope) I can get this to 28/40.
Then I will start working more on driver technique or hypermiling.
More air in and more air out should mean a leaner mix but your car has oxygen sensors and it compensates some. A Trifecta tune will properly calibrate the system for the mods you have and increase the timing for best performance. Making the motor more effecient will also increase mileage some. The factory settings are fairly conservative and generic to fit all kinds of drivers and uses.
To be realistic I do not expect my 2.2 to perform like a LT1 350. When it is all said and done I am expecting atleast as good as the 2.4 maybe a little better but more effecient and better mileage than a 2.4.
That is really my goal to get the most performance an mileage out of this motor what ever that is. I believe this is the way to do it and will continue making the mods and testing until it is where I think the optimum is.
My city mileage has went from 21 to 25 and the highway mileage at 70 has went from 31 to 35, I believe there is more there. I believe (hope) I can get this to 28/40.
Then I will start working more on driver technique or hypermiling.
Senior Member
Joined: 06-27-2006
Posts: 732
From: Kingsville On
I have not checked to see if the 2009 2.2 is still using the same intake when I saw that it was up to 155 HP and the MPG are up as well I was thinking they may be using a different intake.
Senior Member
Joined: 06-27-2006
Posts: 732
From: Kingsville On
I did very little research about these type of TB`s I do not think they work the same as the cable driven ones.I think when you push down on the gas pedel it tells the electric motor to open.The gas pedel has most of the control but I would think the the computer can also send input and open or close the butterfly as it sees needed.