07 2.2 Ecotec build
 

Hey, I have a 06 cobalt that I’m wanting to build the other motor I have for. The other motor is a 07 2.2 out of a cobalt also. The plan is to go with a supercharger setup, just basically wondering what kind of setup and internal motor work I’m going to need to put it at 250-300 fwp. And at that point what kind of hp is the stock 5 speed tranny gonna hold?

the biggest problem is there is no way to tune the factory ecm on the 05-06 2.2l, so unless you go with a stand alone system your out of luck.

next up is the 02-06 2.2l and 07+ 2.2l engines are different. the 02-06 engine uses a 7x crank reluctor wheel, the 07+ uses a 58x wheel. the work around here would be to track down an early crankshaft and use that during the build.

the stock 5 speed is actually quite strong, some even say they are stronger than the f35 in the ss.

well I have the entire 07 car, it’s just wrecked in the front, would it be as easy as taking the ecm having it tuned and swapping it with the motor? And would that also fix the newer crankshaft problem? Or is the early crank used for a reason. But as far as the internals of the motor, should I go with a forged rotating assembly or is the stock parts capable of holding the boost it takes to make around 300fwp? Is there going to need to be head work done or does the factory casting flow good enough to get these numbers? I’ve built several 800-1000 hp big blocks, but never a 4 cylinder. I have no clue what they make for these, or what the capabilities and limitations are to what I have. So any and all help is greatly appreciated!

HP Tuners is very popular tuner for GM OEM ECMs, check this out and you'll see what is supported: https://www.hptuners.com/vehicles/

after reading a little I understand a little more that being an 06 my car can’t be tuned. Now any clue what it would take to swap the ecm? Would I have to change the entire wiring harness inside and out?

Check this out maybe it can point you in the right direction: https://www.cobaltss.net/forums/2-2l...5-06-a-320500/

Swap the entire car wiring over from the other car including all the modules.

the reluctor wheel has to match the computer system. if your going to swap the harness and modules to 07-08 stuff, use the crank thats in the 07 engine.

for your power goals i would be going with some aftermarket rods and pistons (eagle rods, wiseco pistons) and a set of head studs. if you are going to rev it to 7500 id also do a balance shaft delete and a set of valve springs, any higher than that id be looking at an ati damper. cams are your choice. the stock head does flow fairly well, but can always be improved upon. the exhaust side really does benefit from some attention.

if you havent already, look up the gm sport compact build book, it can be found free online in pdf. it lines out pretty well what you need for your power goals. just keep in mind the info in that book is a little dated.