Dyno4mance Dyno Day Results - A Little Delayed
Originally Posted by supersupra
What is the advantage of the dual map?
Originally Posted by MYEVOVIII
I you want to Email me your E-mail address I can forward you the Great Dyno Equalizer program which shows Dynojet/Dyno Dynamics/Mustang it converts it all for you automatically, just put in the number and hit enter. This is from Shiv's old internet site.
Also as far as tuner to tuner. Dyno #'s can have a lot of variable between Dynoto dyno as well as temp and humitity and gas as well as correction factors A/F timing and so one. I think either way you go you cant go wrong both are excellent tuners.
Also as far as tuner to tuner. Dyno #'s can have a lot of variable between Dynoto dyno as well as temp and humitity and gas as well as correction factors A/F timing and so one. I think either way you go you cant go wrong both are excellent tuners.
You should've seen the twin map.
Originally Posted by Az3ar
Correct me if I am wrong but it seems that Shiv tune is considerably leaner on lower RPM... Am I seeing things right? 12AFR at 4000K RPM?
So the 12:1 on that car is MAYBE about 11.5:1. Again, I am speculating that the AFRs on the car in question were taken at the tailpipe.
That is true ..... But almost every Vishnu dyno goes to 12:1 at peak torque. This is by design and I've questioned Shiv extensively about it. Time after time he has stated that running 12:1 on pump at peak torque is safe because of the modest timing at that RPM.
When dyno tuning my V360 I added some fuel to fatten it up and lost 10WTQ but then I added a little timing advance and balanced it out. That pretty much means I could have added timing to begin with and picked up even more power. Keep in mind that you are normally only at the RPM for a split second and once rowing through the gears you dont see 3k-4k again. If you are concerned about the AFR for road racing and auto-xing then just add an offset of 5% fuel to your maps (while racing) and you should be fine. I run so rich on the road course that I shoot nearly constant flames.
Originally Posted by shiv@vishnu
The new maps are NOT overgly agressive as evident by the logs and dyno graphs that people have taken. 12:1 is perfectly acceptable from a tailpipe wideband around peak torque when the car is only seeing 1-2 degrees of advance. We've been doing it for years and I have yet to hear of a problem. If you don't like it, tune it yourself.. .sheesh.
When dyno tuning my V360 I added some fuel to fatten it up and lost 10WTQ but then I added a little timing advance and balanced it out. That pretty much means I could have added timing to begin with and picked up even more power. Keep in mind that you are normally only at the RPM for a split second and once rowing through the gears you dont see 3k-4k again. If you are concerned about the AFR for road racing and auto-xing then just add an offset of 5% fuel to your maps (while racing) and you should be fine. I run so rich on the road course that I shoot nearly constant flames.
Last edited by Jeff_Jeske; May 27, 2006 at 06:39 PM.
Originally Posted by Jeff_Jeske
Please post up your maps for the rest of us to look at.
As soon as I get them off, I will post them up here. Perhaps, I will try this weekend.
Noize??? You busy this weekend? I will be more than happy to drive down there for a few minutes.
Nathan
Originally Posted by EVO Nathan
I dont know how to get the maps off of the Xede and onto my computer. I think is going to show me how to do that.
As soon as I get them off, I will post them up here. Perhaps, I will try this weekend.
Noize??? You busy this weekend? I will be more than happy to drive down there for a few minutes.
Nathan
As soon as I get them off, I will post them up here. Perhaps, I will try this weekend.
Noize??? You busy this weekend? I will be more than happy to drive down there for a few minutes.
Nathan
http://www.xede.com.au/files/XEDE%20...20Version).pdf
http://www.xede.com.au/files/XEDE%20...20Version).pdf
Originally Posted by supersupra
What is the advantage of the dual map?
The stock Evo 8 ECU has what is often referred to as a high octane and low octane map. Basically, as JJ said, the ECU uses the low octane map when it detects knock (e.g. it pulls timing and adds fuel) to keep your engine from committing suicide.
There is another form of "dual map" out there, which attempts to run two separate timing curves in the high octane map, which is a _really_bad_idea_.
l8r)
Originally Posted by Ludikraut
Don't get confused between the different "dual maps" that are out there.
The stock Evo 8 ECU has what is often referred to as a high octane and low octane map. Basically, as JJ said, the ECU uses the low octane map when it detects knock (e.g. it pulls timing and adds fuel) to keep your engine from committing suicide.
There is another form of "dual map" out there, which attempts to run two separate timing curves in the high octane map, which is a _really_bad_idea_.
l8r)
The stock Evo 8 ECU has what is often referred to as a high octane and low octane map. Basically, as JJ said, the ECU uses the low octane map when it detects knock (e.g. it pulls timing and adds fuel) to keep your engine from committing suicide.
There is another form of "dual map" out there, which attempts to run two separate timing curves in the high octane map, which is a _really_bad_idea_.
l8r)
The Dynoflash map that was in the car had identical high and low octane maps. Scary to say the least. No safety for low octane.
