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Anyone have a good starting narative for A6 tranny changes? Anyone done some playing with the paddle shifted A6?

Any tuning options? Possibly swap out the lock pcm for a open painless one? How is the programming accomplished? OBD port?

LG has you use the rear sensors in the front wiring harness. The rears are (were) turned off by disabling all sensor 2 codes.

What in the world could cause this?

98 Vette with LG long tubes. As soon as it goes into closed loop the LTFT go to max in opposite directions. Repeatably.

With the headers the rear sensors...

Ok, so the question of the hour is. With it set to no-SES it still shows up on the smog report. Is there a way to run in SD without it showing up?

So I disconnected the MAF on a 98 C5, and at first set the P101 P102 codes to just no SES light, but it showed up on emissions. So I decided I would try to turn it to no-error reported.

It would...

Stupid question, but did you adjust the idle airflow tables? From personal experience they contribute more to idle then VE does.

The first thing I typically do is the idle airflow histogram, and...

Here is the situation...

98 LS1 Vette everything stock except:

LG Long tubes, no rear O2 sensors.
K&N Intake, Stock bridge and coupler.
Corsa Cat back.

So it comes in and is belching gas....

I guess I'm fishing for some awnsers, what areas are they working on? MAF tables?

I see other tuners are offering kits for the 07' LS2 and LS7's. How could they possibly tune the VE area at this time? How are they tuning for cams and blowers with the limitations we have right now?

Chris,

I think the following is the best solution (IMHO):

1. Have HP tuners render the VE table based on the equations.
2. Let the user make the changes to the VE table.
3. re-evaluate the...

It may seem simple but I have found the following to be the most likely culprits:

Idle Spark: Make sure that it is smooth, I have seen several cars that would ocillate between two cells, one at...

Is that bad?

Injectors are stock so no IFR changes.
We obviously can't do VE yet.
Stock MAF.

I turned off COT and adjusted the PE table, picked up 11rwhp with 13.0 afr and 3* more timing....

I downloaded the latest drivers from HP tuners for the MPVI.

I then attached the device, after a failed auto detection I browsed to the drivers. Agree to the drivers warning. It found one device...

I uploaded a stock 07' C6 file. I was successful in tuning PE using the PE table, but everything else is very new.

It was interesting to see the stock PE curve.. It seems to go from

13.0 from...

You might want to read this:

http://www.usaonline.se/_product.php?pid=15&id=44

since they moved to the vortec line they have been using GM ECM's now they are the "marine" version. But I can't...

So I was watching this weekends episode where they put a procharger on the project Camaro. They strapped it to the dyno, where they showed some logging with a laptop and some scanning.

Sure enough...

All the newest boats run marinized car engines. Specifically Indmar and PCM use GM Vortec engines with GM PCMs. My 05 Indmar Vortec 5700 has an OBDII port.

I thought about hooking up the scanner...

I just adjusted my PE table so that the AFR stayed at 11.9-12.0 with the meth. The advantage to the meth was I was able to pick up 6-8* of timing when using it. With 10psi it was worth 50 ponies......

But I noticed that even with the MAF fail causing open loop the LTFT and STFT were still influencing the fueling.

The blower isn't going to make much fueling difference at idle at below 2500 rpm.

If you can find a VE table for a similar setup sans blower it would be a great starting point. Just make sure to...

Cool... I swear when I worked on my 99 that it read 0% before startup.

Thanks for the replies.

I have been working on a heads and cam this week, and came across what I though would be a good idea, and sure enough it helped.

My tuning method for VE:

1. Set MAF fail to 0
2. Set up the AFR...

I was working on the VE table for the 2002 C5 last night and did about 30 minutes worth of logging with my wideband using the AFR error histogram with Air Fuel ratio selected as the chart value.
...

Working on tuning a heads and cam 2002 C5. I noticed the TPS% reads 10% before and after startup without anything on the pedal.

Since this isn't my car, is there something to look for? How can I...