EFI ignition map

[jbrown]

How does this ignition map look.. I am not getting good gas mileage. I think I need another tuner to do some tweeking....
John

[Tippy]

That ignition map has almost no tuning to it. It's flat as a board.

What compression, liters, plugs (twin/single), boost, heads/cams/intake?

I'll post you one that can "help".

[Tippy]

I run high-40 degrees of timing at cruise RPM/loads. That's where your MPG's come from (of course with stoch or leaner AFR's).

[xbmwguy]

I'm with tippy. Hope he didn't take any more than a cup of coffee! He's linear throughout. J get that thing tuned. You will be amazed. Both power and fuel economy.

[jbrown]

Originally Posted by Tippy

That ignition map has almost no tuning to it. It's flat as a board.

What compression, liters, plugs (twin/single), boost, heads/cams/intake?

I'll post you one that can "help".

its a 3.5 liter, single plug, 15lbs boost, Im not sure what heads, 964 cams, intake is a stock 3.0 liter turbo intake, ported to 37mm.

[jbrown]

All APR head studs and hardware, B&B header, gt35r billet, 46mm tial wastegate

[xbmwguy]

My vote is you are leaving some power and drivability on the table. Especially with the low boost #s

[Tippy]

Oh man, you have a lot missing torque in part throttle areas.

I mean, a lot!

[Tippy]

The tuner only tuned the boosted areas from what I can tell.

[jbrown]

Any changes you can recommend, until I find a new tuner in my area for full adjustment

[Tippy]

First, do you have the ability to make changes? If so, sure.

[jbrown]

Originally Posted by Tippy

First, do you have the ability to make changes? If so, sure.

Yes I am able to make changes. I know how to use the program and load the maps.
I have already made little changes....
thanks John

[Tippy]

I spent like 30 minutes trying to get you a screenshot of my map off my MacBook. Some reason I forgot how to. I'll post in a sec from my iPhone.

[Tippy]

CAVEAT, I'm not a tuner, nor has my car been tuned by a professional tuner. This has been all done by trial and error, following OEM curves for reference, and from help from a person who has spent a lot of time on a dyno using a stock CR, naturally aspirated 3.2.

DO NOT use any timing you are not comfortable with!

What I would focus on is the part throttle areas - off idle up to say, 3500 RPM. This is the point I see your map needs a lot of work. As I've said, these are not professional numbers tuned perfectly, rather an enthusiasts attempt at a torquey low-end with great MPG's.

Here it is FWIW (this is my conservative map, I have far more aggressive timing than this):

[jbrown]

thanks....

[xbmwguy]

That tune will def. get you a much better car and mileage. Can you auto tune? As I am sure you know by changing the timing map your fuel map will need some love as well

[Tippy]

The more I look at your map, the more I realize the tuner did virtually nothing. There's no way you have increments of 0.1 degrees as the RPM rises in the boosted areas.

I'd call the tuner on that....

[jpnovak]

Originally Posted by Tippy

The more I look at your map, the more I realize the tuner did virtually nothing. There's no way you have increments of 0.1 degrees as the RPM rises in the boosted areas.

I'd call the tuner on that....

Agree. Looks like a very stock curve with a few degrees pulled under boost. He could have at least read the manual and followed the vacuum advance retard mechanisms.

You have a lot to improve as far as timing and how that is related to fuel delivery both under light throttle (fuel mileage) and power (boost).

I can tell you that Cory has spent a lot of time on the timing curve. Its a great start but you must modify for your particular engine. No two are exactly the same.

[jbrown]

Thanks for all the advice. I called a friend who is good friends with Eddie Bello. I am going to bring my car to him and he is going to tune it for me..

[Tippy]

Hopefully, Bello will tune it for max power, then the safe, conservative tune. 2 dyno graphs.