I was wondering if there was anyway to increase the amount of adjustment of fuel the ecu gives due to outside temperatures. When it rains, my a/f ratio increases from around 11.2 to 11.6-11.7 in some areas. I am worried that winter temperatures will lean out the engine even more.

Also, I have noticed that my a/f differs from gear to gear. I know I should tune on fourth gear pulls, but does this mean I should disregard the other gears. Sometimes my a/f will be 11.2 in third and taper from 10.5 to a flat 10 (or lower) in fourth?

Thanks for the help!

 

Technically u cant add more fuel since it's 11.2 parts of air to 1 part fuel. Just wanted to let u know that...About adjusting it I dunno how to go about that.

 

You should tune for where you typically drive. If you spend a lot of time in 4th gear, tune for 4th gear. If you rarely see 4th, tune for 3rd. Unless you are trying to win a big money race it's better to be slightly more conservative.

Also, I would disregard HaVoK23's post, because technically it seems like he doesn't have a clue.

-Paul

 

+1 Lmao...that was sum funny isht...don't ask

i would tune for 3rd on a 5spd...
u got a graph?

 

The best way of tuning for this is via the compensation maps...which I don't know are available yet for evoflash.

The car's ecu has compensation maps for environmental factors that should keep the car fairly consistent in different situations.

 

LOL You ask a question you'll get 100 different answers. People if you don't know don't post. WTF is evoflash?Did you mean ecuflash? Those compensation maps have been defined for months now just change your air temp correction in the temperature range it was when you saw the 10.5:1. I have my air temp corrections very close together.

 

Ha. Yeah. Sorry it was late.
My bad.
How come your ecuflash shows a closed loop table and mine doesn't?

 

It was called Enrich/enlean map I renamed it like I did the iscv entries so that I can read it without having to goto the properties.

 

My understanding (will be trying shortly) is that you can get the AFRs within 0.3 delta from 3rd to 6th...And I would think that you should be able to reduce the delta even further....

Also, from what I have read and been told is that a mix between summer tune and winter tune should keep you fine year round...but if you are tuning to 11.5 in winter, you should be plenty safe in the summer (IMHO)...

 

36turbo, which way do you adjust the compensation table?

How do you actually pull up that enrich/enlean table?

 

its offset 3ff5 just add it in the definitions in the 9417008 rom

 

I'm sorry, I don't follow. What exactly do you mean?

 

Does that really make that big of a difference trying to keep the AFR's within specific tenths of whatever your target number is? IE: he says the temp. compensation changes his AFR's from 11.2 to 11.6 or .7 ... does that .4 increase matter that much that you need to change the temp. compensation?

I'm not being a smartass I'm just an idiot when it comes to AFR's and I want to know if those small increments matter.

 

I would say yes it does. And 11.6-.7 is a bit too lean for my taste I run 11.4-11.0.