2008 hhr w/ sc and bosch 42lb green giant's not fueling

[kissmy05ss]

I put a supercharger on a 2008 hhr 2.2 l61. Installed bosch 42lb injectors. Adjusted injector flow rate from tested pressure of 43.5. Calculated to what it should be at 58psi. 43.5/58, square root * tested flow of 42. Commanded eq ratio to be 11.5 afr power enrichment.

Normal driving the car hesitates and leans out past 17:1. Injector duty was showing 0 at those points. Only got a log at idle, touching the throttle a little. Didn't save the driving log. I'm pretty frustrated with it. I've had enough fun trying to get the virtual ve tuning started with the blue cat tool. If anyone could help it would be greatly appreciated.


hhr 42lb not fueling.hplkeith smith sc 2.9 42lb.hpt

[02statesman]

I put a supercharger on a 2008 hhr 2.2 l61. Installed bosch 42lb injectors. Adjusted injector flow rate from tested pressure of 43.5. Calculated to what it should be at 58psi. 43.5/58, square root * tested flow of 42.

You've put the pressures the wrong way around... should be square root of (58/43.5) * tested flow.

[kissmy05ss]

That's what I did. Just didn't type it out correctly .

[CatnipG5Bandit]

The first thing I'm noticing is that your MAF table seems really low.

[kissmy05ss]

Turned closed loop off through vcm controls in the scanner. It's a more drivable.

Other problem is, when I use the blue cat tool to build the virtual ve table I can't paste from the scanner ve histogram. Can't find enough info on it .

[Boosted C6]

on my 09 cobalt 2.2 turbo and a 05 s3 ss sc cobalt i do maf only especially with the way the ve tables are set up on 08 and up ecms

[CatnipG5Bandit]

As I said before your MAF table is too low, and this tune is set up as a MAF only tune.

[Boosted C6]

like he said maf is way off Screenshot (42).png

[kissmy05ss]

after tuning ve and maf. Everything went much better today. Closed loop, got it where it needed to be. Open loop went just as smooth. Put everything back and it falls on its face after a couple minutes. And, isn't going into pe like i think I had it set. Would you guys mind combing it over? There has to be something I missed or got backwards.



hhr falling on its face.hplkeith smith sc 2.9 42lb almost completed.hpt

[CatnipG5Bandit]

In your log I noticed the MAP at 100kPa at 12% TPS, which is typically idle on the default config. What's that about? It also seems to max out at 120kPa. Are you not running a 2.5bar MAP sensor?

Edit: I'm going to leave this link here regarding tuning with the Bluecat Tool: http://www.cobaltss.net/forums/tunin...ap-le5-318815/

[kissmy05ss]

It is not a 2.5 bar. I got the blue cat tool to work. Used it just like tuning an Lsx. Had to put the laptop down for the night.

[CatnipG5Bandit]

If you use the stock MAP I would avoid using VE for anything in boost in that case. Definitely see what's going on with the MAP. It shouldn't be maxing out at 12%TPS. I'm wondering if a wire has been frayed or shorted.

[kissmy05ss]

Would tthe Lsj throttle body be causing issues? Where it shows the max in that log, I was actually almost full throttle .

[kissmy05ss]

What method should I use to avoid using VE while in boost?

[Boosted C6]

log afr error agents maf and tune the maf only

[kissmy05ss]

The reason I'm asking, is it seems even when I'm disabling ve, I have to turn it off in the scanner vcm controls .

[cobaltssoverbooster]

iirc just remove the blk/wht wire from the maf and disable all codes if your having issues with maf activity. just pulling that 1 wire allows the iat to remain active while defaulting SD mode.
it should be pin location B in the maf connector (second from the right if your staring into the end of the harness connector.)

[kissmy05ss]

iirc just remove the blk/wht wire from the maf and disable all codes if your having issues with maf activity. just pulling that 1 wire allows the iat to remain active while defaulting SD mode.
it should be pin location B in the maf connector (second from the right if your staring into the end of the harness connector.)

Actually, I had no problems going into SD. Only going into MAF only, open loop.

[kissmy05ss]

I'm at the point where I would like to tune it MAF only. I've read there are tricks to still read boost levels above the stock MAP sensors. But, it doesn't seem worth it at this point. It's hard to find info on tuning these ecm's. Anything else I have had no problems getting the info needed, when I got hung up.

[Boosted C6]

try this once i raised the maf by 5% maf.xlsx