Craig Chamboullides

So about 3 years ago I did a heads cam intake upgrade on my 02 A4 Camaro. I bought too small of a converter and my "tuner" set it up so that when I would let off the brake and start rolling the car will basically drive its self, like almost up to 25-30 MPH. So fast forward to this winter I got a new converter and rear end and a few other parts I'm now ready to fix the self driving issue. However my original tuner is no longer in business and because of a wedding and growing parts list, I'm going to attempt to be my own tuner using HPtuners. Only issue is I have no idea where one would have set this up. Does anyone have any suggestions as to what to look for or would be willing to look at my tune and help for beer money?

TIA

Kawabuggy

iTrader: (1)

Do you have HP Tuners and can you post a copy of your tune?

It's going to take someone looking at your current tune to figure out why you have a "self driving" car. Lots of different things can cause the condition you are describing. From incorrect RAF tables, incorrect idle speeds, bad VE tables TOO LEAN, incorrectly adjusted Idle Air Counts if DBC.. Too many things to just guess at.

Post up a log file of your engine running, and/or a copy of your tune and I promise you smarter people than myself will pitch in to help.

With that said WITHOUT a log file, or copy of your tune, you most likely won't get much help.. I think the stickies even say that you MUST post a copy of your log file/tune for assistance. Post 'em up!

Craig Chamboullides

yeah, guess I should have uploaded the tune probably help if someone is trying to direct me.

truckdoug

iTrader: (25)

Post some logs too. A nice long drive around with a couple easy roll into wot. Some cruising and idling.

Craig Chamboullides

Won't be able to get logs for a while yet. Still too cold and new rear is not together yet. Just trying to get ahead of the curve

Craig Chamboullides

ok so not sure if anyone can help from this, but this is just a quick drive around the neighborhood. I gave it no gas and it drove its self up to 20 mph +

TPIZ92

iTrader: (10)

I will take a look at it tonight for you and get back to you tomorrow.

cam specs?

Kawabuggy

iTrader: (1)

Just a cursory glance at your tune, I see the following;
RAF #'s seem to be too high
VE table shows you will be rich in the lower RPM range with anything but a stock cam
Timing-IN PARK, and also IN GEAR, seems to be too high.
Idle speeds seem to be higher than necessary UNLESS you have a big cam that requires it, and a stall converter that will allow idling in gear at that RPM level.
Is this a speed density tune? Your MAF is failed...
Your PE is commanding a 11.58 AFR. Are you naturally aspirated, or...? Supercharged, turbo?
STFT OPEN loop is disabled, and your EQ ratio table has been heavily modified.

Please post your cam specs.

Craig Chamboullides

Ok yes it is in speed density. And I do have a large cam and the original tune was set up for a converter that was too small. I now have a larger converter to accommodate the cam. The cam is 231/234 .643/598. I am n/a and to be mostly honest that's about all I understood from your post. I'm trying to learn some of this with help from a few friends that have calibration knowledge.

Craig Chamboullides

231/234 .643/598

TPIZ92

iTrader: (10)

looks like he got to it first but judging by what he said, there is some fixing to do. Pretty much all of those things can cause what your experiencing but if this car was in front of me. First thing I'd do is lower the idle speed, restore spark to stock. Reenable the short terms and tune the VE as best you can at idle. Make sure the fueling looks decent. Then play around further with idle speed and spark. Focus solely on that. Dont even bother driving it. Once it has a decent transition, you can let it come off idle and more then likely the airflow will need to be adjusted to keep the car from hanging and dragging the car down the road off the pedal.

Craig Chamboullides

Thanks for the reply guys. I'll try to mess with it and see where I get.