Howdy.

Is it possible to get a OEM ignition/fuel map for really any engine?

I'm looking for a H22 fuel and perhaps ignition map for really any software just as long as I can download that software and compare fuel curves/ignition curves to see where I am after spending hours and hours tuning my own car.

the goal is to try and polish out the low cam fuel map on the H with closed loop off and do wideband logging and target about 13.8:1 under high load on the low cam map 1k to 5k rpm and tune part throttle to 14.7'ish to 1

Although! after logging wideband , making changes to fuel and then looking at the map in 2d line mode the curves are pretty jagged looking... which are reasons why I would like to compare with another tuned h22 map for specific trends in the low cam fueling area.

around 5k is when vtec kicks in... reasons why the low cam map from 5k-8k look flat.

Honestly I would like to get the fuel map as smooth as my crazy looking low cam ignition map shown below.

Thanks!

--Aaron

 

pgmfi.org has several rom dumps for stock ecus you can refer to.
Referring to the stock rom's really won't do anything for you.

Your low cam fuel table doesn't look horrible, I have seen people post much worse...

I would suggest you target 13.0:1 at atmospheric pressure instead of 13.8:1 until you can get on a dyno to determine if the leaner 13.8:1 mixture is really producing any power (likely not).

Attached is a screenshot of an h22 low cam table that is a bit smoother then yours for you to reference.

 

I find it hard to find screenshots of "trends" but that pretty much answers a theory I had about how it should look.. I think I'll try and smooth mine out to look similar to yours, although its pretty funny Its hard to get neptune to capture AF in all areas.

How does your ignition map look?

I'd like to compare perhaps the lower two lines of high load and see if I can gain anywhere... I don't think I'll be at the dyno for a long while as I would have spent loads of money on these minor changes I have been making.... spendy stuff. for now I just drive around and feel what the engine is doing and listen.

By the looks of your fueling map it appears that you payed more attention to the top 3 lines then any of the other ones is this about right?

--Aaron

 

Aaron,

Don't over think it. Don't try and tune every single cell, you don't use every single cell.
Watch the wideband, make sure your maps don't look like crap and call it a day.
If the a/f ratios are correct & your datalogs look good you are set. This isn't an f1 engine on an engine dyno your working with :-)

 

I know this!

Id like to have some smooth looking maps though it gives me a warm fuzzy feeling inside. Some of the user provided h22 stock maps are horrible so I thought id contribute once mine is all done.

 

I wish dyno tuning made me feel warm and fuzzy.

Instead it makes me feel deaf and tired after about the 3rd car of the day from all of the noise & heat hahaha!

 

That's why you should do what you like to do for work and save the things you love for hobbies!

 

Haha nice nice.