2.2L (L61) Cobalt support

[Halfcent]

Hi all. Halfcent from CobaltSS.net here. I'm here to try and convince HPTuners to give owners of Chevy Cobalts with Automatic transmissions and 2.2L engines a tuning product.

I know all about the complexity issues involved with this car. I know that it has a TCU, that in turns works with the ECU. I know it's not going to be an easy crack.

But I'm dying here. I have a turbo-ready 2005 Cobalt, and I can't turbo it because I can't tune it.

My goal is to have a 100% street and emissions legal car, producing the most reliable horsepower possible. I have upgraded the engine to handle the horsepower. I have upgraded the trans to handle the torque. I have spent gobs of money to get to where I am, and am now stalled because there is no software available to run the stinkin' turbo.

I can't go with a stand-alone unit because the ECU provides data to the instument cluster and power steering. There are no piggy-backs for this car. There is nothing.

Come on guys, I have to believe there is a market for turbo charging this car. That market needs your kind of product.

[mpprotomec]

Are there any major difference between 03 Ion, 04 Ion, and 05 Ion/Cobalt when equipped with the 2.2 L61?

My 03 is not an auto, so TCU isn't likely to be a factor.

But do all the years use the same PCM, conventional throttle system, returnless fuel, etc. as my 03?

[Chris@HPTuners]

These cars are CAN bus and use the E16 ECM (which i have) and the same TCM as the LS2 uses (we already support this).

It is on my list of things to do, but i don't expect to begin preliminary work for at least a month or two.

Chris...

[mpprotomec]

Is my 03 Manual trans an E16 ecm?
I posted a pic in another thread and someone said it was an E11.

The post is here....
http://www.hptuners.com/forum/showth...?t=2035&page=4

Post #76

[Chris@HPTuners]

yeah not sure, E11 appears on the sticker but i haven't seen a PCM from one of those cars before.

[WopOnTour]

My info is that the 03-06 ION w/ L61 2.2 and 05-06 Cobalt w/ L61 2.2 ALL use the E16A ECM.
Not sure about that sticker in the other thread though- to the best of my knowledge no such box exists (E11) Not to be confused with the P11 of course
WopOnTour

[mpprotomec]

yeah not sure, E11 appears on the sticker but i haven't seen a PCM from one of those cars before.

Want to?





I have heard unverified sources claim 03 manuals had a different PCM than all others.

[Chris@HPTuners]

we have a source for PCM's, although if your PCM is an orphan then don't hold your breath for support. The E16 is the only one i am even considering at this time as it is used in a number of other vehicles.

Chris...

[Halfcent]

Thanks for the reply Chris. I'm glad to at least know you are going to work on it. I have a question about the TCM support.

You mention that you have software for it, that's great. I didn't know it before now and I promise I will read up on it. Let me tell you what I have, and if you could, tell what your product can do for me...

I had my stock 4T45E rebuilt by IPT trans. A great shop by the way. I got a 3000 RPM stall converter, an LSD by engineered performance, Raybestos clutch packs, hardened internals, and a high output pump. IPT tells me it should be able to handle 400 ft/lbs without worry.

I need control over the shifting. For dyno tuning, I need to lock the trans into a specific gear so it doesn't shift. For the track, I need second gear start for burn-outs. And of course, I need to play with the stock shift pattern a bit. IPT offers a hardware solution with their Electro-Matic manual controller for some of those items, but not the biggest, which is...

My engine will be able to produce over 400 HP (assuming I can get a tuner for it). That much power into a street tuned trans will result in a lot of slip during gear shifts at less then WOT acceleration. I need to teach the trans to shift harder in order to avoid burning up my clutch packs. Can your product do that (and the other things)?

[WopOnTour]

Is my 03 Manual trans an E16 ecm?
I posted a pic in another thread and someone said it was an E11.

The post is here....
http://www.hptuners.com/forum/showth...?t=2035&page=4

Post #76

The numbers/letters in your pic (in the above mentioned thread) are not being interpreted correctly. The model year might be right, but the alpha numerics that follow are NOT the ECM model.

For instance I looked at an 04 ION today and the numbers were:
GM04E00A00
Based on that logic this would be an E00 ECM?... I dont think so, IFAIK they're all E16
WOT

[mpprotomec]

I am just hoping for a definitive, correct answer to whatever it is.
I put no stock in any of the answers I've gotten so far.
If it isn't an E16 and the E16 will be supported, and the E16 has a base 2.2 Man. cal, I will simply swap in that PCM.

[Chris@HPTuners]

email me your VIN and i will tell you the answer.

or punch it into calid.gm.com and post the calibration ID's it returns

[mpprotomec]

Vin: 1G8AF52F73Z163630
Part Number CVN Description
12592416 N/A Main Operating System
12580752 N/A Main Operating System

[WopOnTour]

And here's an 04 ION L61

1G8AF52F04Z117624

Part Number CVN Description
12592416 N/A Main Operating System
12580752 N/A Main Operating System

[Chris@HPTuners]

looks different to me, compare to this 05 Cobalt

1G1AK12F457637597

[WopOnTour]

More than just a different OS??
I'll get a VIN for an 05 ION

[WopOnTour]

Here's the latest cals for an 05 ION 2.2
1G8AW14F45Z108559

12602849
12602853 00008A25
12600379 00053B8
12600381 00008C75
12600384 000007AC
12600383 00000EBA
12596920 0000D47F
12594678 00002A2B

[Halfcent]

Having read a lot of your How-To threads now, it appears your product should be able to adjust the shifting like I needed. However, its a flash product, which means I will not have dynamic control over the trans for the purpose of dyno tuning.

Do you forsee any problems with using your software and the IPT control box together? I can't think of any myself.

[IanB]

Having read a lot of your How-To threads now, it appears your product should be able to adjust the shifting like I needed. However, its a flash product, which means I will not have dynamic control over the trans for the purpose of dyno tuning.

Do you forsee any problems with using your software and the IPT control box together? I can't think of any myself.

What gear do you want to dyno in? Just put the selector in D and it will hold 3rd, problem solved?

[Halfcent]

What gear do you want to dyno in? Just put the selector in D and it will hold 3rd, problem solved?

No, it won't. At WOT, it won't select 3rd gear until around 4000 rpm. And I need to lock the converter too.

With a manual controller, I can force it to stay in 3rd with a locked converter. That will make doing runs a lot more consistent.