Acesanugal

iTrader: (5)

So when I lived in Vermont I had the tune roughed in where I was happy enough with the power and it was smooth across the rev range.

Now I've moved back to Georgia, trailered the car down, and its wicked rich. I managed to get rid of most of the surging but the power feels very flat and it feels like I've lost 20 or 30hp. Moved from Burlington, vt to Athens, ga. Could the change in elevation really be to blame here...?

turbo2ltr

iTrader: (1)

According to google, it's a 430 ft difference (Athens is higher). So i could attribute to some loss in power, but that's a pretty small change. Do you still have the atmospheric pressure sensor installed? Is there a large change in humidity? What about temperature? I assume its colder in VT which will generate more power. So now you have two things 'against' you.

Acesanugal

iTrader: (5)

It is warmer here now than it was when I left Vermont. However, it is no hotter or higher in humidity currently than it gets in Vermont and the car has never felt like this.
Yeah the pressure sensor is installed.

Guess I'll just slowly start pulling more fuel out of the map to compensate. Then come winter and cold temps I'll just end up adding it back.

arghx

iTrader: (3)

Make sure nothing came loose

Acesanugal

iTrader: (5)

Everything seems fine, just my AFRs and how the engine feels are different.

Now that things have calmed down a bit from the move across the country, I can start correcting the issue and be able to drive the car hard again.

My wideband gauge and the scaling/input into the logging function of rtek have always differed.. I've played with the scaling seemingly till the cows came home...and I don't have any cows... from memory of the pull I did the other day watching the gauge, it looked to me that I was low to mid 10s. But looking at the graph its saying more like mid to high 11s. Obviously the scaling is off and requires more adjustment.

The way I am making these scaling adjustments is by idling the car, watching the wideband gauge reading and adjusting the scaling corrections to try and get the real-time view on rtek to align with what the gauge is saying. However...

While the gauge stays fairly solid at a given AFR, the rtek's reading of that input is kind of all over the place. Should I get a video of what I'm talking about and post it? The few people I've spoken with about this issue seem to think its abnormal and I agree. It's wired properly.

Regardless, I believe my safest option at the current moment is to use my wideband gauge as my point of reference for fueling adjustment.

More tomorrow I suppose.