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LNF has a factory wideband. No need to enable anything for such a cause.

Problem solved though, HHR was just traded in for an Evo X.

No it doesn't. But neither does reading the thread or posting suggestions that don't work on this model year.

If it was that simple, my searches would have found the answer.

I saw zero egr dtc's, because I already had that idea.

Did you even read my post? The screenshot shows catalyst is complete. The question is about the egr monitor.


And for the record, catalysts was disabled before, and with 6 months of driving never...

A long time ago we did, but hooked it back up right away. All DTC's are set to factory parameters.

My buddy has a 2010 HHR SS. The car has a tune on it. The car will not ready either of the following monitors:

EVAP System and EGR System

As far as I'm aware the LNF doesn't have an EGR. So how...

I do believe you'd need a third party program.

I would like to hear about this, but I don't get why people ditch the MAF.

([PID.2339]*9.369)-([PID.2340]/6.895)-.53

2339 as written in this formula is sensor voltage. That is why it's multiplied by 9.369 to achieve it's PSI counter part.

2340 as written in this...

Factory wideband is just as good as any cheap aftermarket wideband.

Any thoughts or ideas as to why it shows 2.1 PSI at idle for boost. Are you on 3 bar sensors?

Just started working on my friends car last night and things are going very smoothly.

But a question, should the 4 optimum spark tables be the same or just making similar changes to all 4 tables?...

Have you tried logging pedal position vs throttle body? Are both achieveing 100% if floored?

I don't think the problem lies in the tune at that point. If you have a vacuum line going straight to the wastegate, and the spring is xxPSI, it will make that PSI, or a few PSI more.

Sounds like...

Can't wait to compare yours to mine!

They are positive though. Now I'm not sure on the E69 ECM, but in other ECM's, when you enter PE, it automatically adds positive fuel trims to compensate for what it thinks will be a lean condition...

Just a thought, not 100% sure, but I would get those fuel trims in line. That automatically adding extra fuel you don't, need.

Let me start off by saying that all oxygen sensors read in Lambda. Once you figure out lambda, AFR means absolutely nothing. Lambda reading of 1 will always = stoich for any fuel.

Dual tunes on a switch would be the best but I doubt they will take time to figure it out.

Does the wastegate solenoid really get that hot if you leave the values high? Just trying to understand you reasoning behind that one.

Only if the fuel you are using has a stoich of 16.17 would it be 1 lambda.

Okay, I understand your question now.

Yes. 30% doesn't necessarily mean you'll get 9.8. You may need a little more or a little less depending on the fuel near you.

Your concept is 100% correct...

At cruise yes, 1 lambda. Remember, 1 lambda is stoich for any fuel.

So some stoich values:

E85 - 9.765 AFR - 1 Lambda
E10 - 14.13 AFR - 1 Lambda
C16 - 14.77 AFR - 1 Lambda

Starting to make...

AFR is confusing you. You need to ditch that term and refer to it as lambda.

When lambda is 1 the fuel mixture is burning at stoich, regardless of the fuel type.

Trims are ALWAYS going to bring...

Think in terms of lambda. Injector constant changes alter fueling needs without skewing the MAF.