How much of a spike are we talking about? I noticed a spike at 6340 rpm. The votlage went from 0.79 to 1.02, but there was no timing pulled at that rpm in my timing log.

 

You are welcome. I too am very happy with the Xede and Vishnu's customer service and I have met Shiv and know that he is a great tuner, a fun guy, and a great Kart driver to boot

When it comes to the leaness of the AFRs, do what you feel comfortable with. My comfort level with 93 octane gas is 11.5:1 and not more. I am going to tinker with the off-the-shelf map until I hit 11.5:1 across the board, except at peak boost torque. I will also monitor my timing and knock and tinker accordingly.

I do my logs in 3rd gear like 99% of the people who log the engine parameters of their Evos. Given that, an AFR of 12-12.5:1 does not make me comfortable.

I am really enjoying all of this learning, exchange of ideas, logging. Just to think that back in 1998 when I first bought my SE-R (now race car) I did not even change my own oil. Now I can do almost all mechanical work and I am learning how to tune my car

 

well there was a diff when i hit the brakes at 5500rpms in 4th gear so i see that shiv is right about it.
also i will be trying to do the same in a 3erd gear pull to see if there is a difference.

 

here is some supposed knock. the noise floor was from .75 to 1.30 volts, with the spike going to 3.00 volts

 

Why even test this? We already know that the AFR will go richer with a higher load.
That doesn't change the fact that without the brakes you could be running dangerously lean.

 

This is my latest version of the 93 octane map that came from Shiv's website. I added 3% fuel (rather than 4% in the previous map) and backed off the timing, just like Klaus said. The timing log has a 1* pull in one place only. According to Dustin, that is very ok. But I am still getting 24* advance deep deep into redline. Maybe I just should not push so deep into redline.

The boost peaked at 22.44 psi even though it is summer is around 18 psi by redline. There were no spikes in the knock voltage and a max of 1.20 volts registered at 7200 rpm. I did the pull on the same ramp at around the same time.

The car fellt great during the pull. I think that is the map that I will keep. I will do some more logs on this maps to see if it is consistent.

AFR, RPM, Boost and knock voltage.




Timing

 

How much total timing are you taking out up top? Also, have you tried to log while doing a pull on a straight, flat street?

Is this with a totally stock factory ECU just running xede on top of it?

Are you adding alot of fuel in the peak torque area? Is it positive in the xede?

 

Here is the map in a zip file. If you have Xmap you should be able to open it. No I have not tried logging on a flat surface. I know it should be a flat surface, but there is not a place next to me where I can do that. But you are right I should try and find a flat sruface to log at. Damned urban area.

I run a totally stock ECU and xede. Check the map and comment on it. I would appreciate your input.

 

For some reason Xmap won't work on my machine anymore, I havent used it in ages. Gives me a error, can you screenshot the maps and PM me?

 

nj i did some research for narrow band readings and it says that there is no exact conversion to wideband readings but some use the narrow band cause they aint got a wideband so they say that narrow band readings like .91-.93(11.3-11.5)
and for .89-.91 would be a high 11 reading.
maybe with your logs could you please add the narrow band reading just to compare.
thanks nj

 

also i found a thread from warrtalon where he was tune for 11.0-11.5 afrs at sea level then he moved to a higher place like 6600' of altitude and he started seeing afr at 12.0-12.5 and he said that he would need a new tune.
iam at 3300' of altitude maybe this also explains why the lean condition in 3er gear for me??
at what altitude are you located nj?
also the vishnu maps where done at sea level this is just an observation.

 

It's never an exact conversion. I have seen cars at .94 narrowband run from 10.5 to 11.8 AFR without the narrowband ever changing.

 

Here they are. PM your impressions. I would really like to know what I should do to reduce 7-7.5k timing below 24. I want it to be at 22.

 

Most people who tune properly do not rely on narrowbands. They are inconsistent. I had readings in the 0.98 v on my EVO after it was tuned but my AFR was at 11.2:1. I also had readings at 0.94 and my AFR was 11.2:1.

I know that you are trying to use the narrowband voltage since your wideband does not log. Give in and sell your AEM Uego and get a wideband that logs.

 

I am at sea level and I was getting 12.5:1 on Shiv's maps before I modified them. You were getting the same thing at 3300 feet.