Today I did some tuning changes to my timing map and some very small changes to my fueling map to compensate.

I centered my efforts today around 3000-5000 rpm

Look at the difference adding a little bit of timing in that area does! At 4300rpm, I gained 19wtq and 16whp. I was really impressed with the curve gain from 3500 to 5200rpm.

All of this was with not much added knock voltage so still a safe tune.

Next time I will be tweaking 5200rpm on since I am still running some lower timing there.

Here is the dyno chart and the 2 maps before and after so you can see the changes I did.



before map:


after map:

 

Nice gains! I understand your WOT and HIGH maps ... Any general tips for tuning the low and med maps? I have no idea where to start : P

 

thats cause your from the incompetent 818 dwarf

 

Post screenies of the timing curve and knock voltage.

 

Go back to Henderson gimp ... Cant even do your own fluid changes

 

Yes very interested. our cars are not a fan of much timing. Nice gains, nice graph.

 

What kind of boost levels as well? graph is pretty flat...you still have room to increase a couple pounds? very linear just seems it could be making more at the top end. beautiful torque!

 

Here you go, knock voltage is getting a little noisy but still under 1.8v. I will try to tune some of the noise out with fuel next session. I'll also be logging the next couple days doing a bunch of different types of driving to see how these current settings look. If they don't look so hot , I will revert or bring them down a bit.



and ECU+ log:

http://tinyurl.com/jlvvm

 

Yea. My car ran some pretty low timing in this area before, about 3 to 4 degrees. I think because of the larger injectors. I mearly added back some timing that I was missing from the stockish timing curve. Now I run about 6-7 degrees

22 psi spike to about 20.5 psi and 18-19psi up top. I really need to get off my *** and install my MAP sensor so I can log boost.

 

Hahaha, right on, keep me updated if you don't mind. Admin@garagedonline.com I'll have my dyno next year, in the meantime I'm working with a 4wd hub splined dyna-pak and attempting to teach myself all I can working with EcuTech Software and so far so good. Mitsu has a GREAT failsafe for highboost (don't ask!). It really makes it hard to hurt the car unless you do something plain stupid. Congrats again and thanks for the great info.

 

alrighty, did some changes to the tune today. Also swapped the stock OEM drop-in filter with a K&N drop-in filter.

I had to take out 1 degree of timing from 4000 rpm to 5500 rpm to smooth out the knock voltage a bit. I also put back in some fuel from 2750 to 6000 rpm.

This seemed to smooth everything out pretty well. These changes made me gain a bit in the midrange over yesterdays tuning and also a bit up top.

Then I pulled over and swapped out the filters. Did three runs with the K&N in and tweaked it a tad (needed more fuel). There is still some tuning to do with the new filter in, it seems to want to knock a little at 5000 rpm.

Notice on the curves below that I gained up top with the K&N filter but lost a bit of torque and HP in the mid and lows. I will have to tune and see if I can get those areas back. The knock at 5k might have a bit to do with it as as well.




A really interesting comparison chart showing almost no change at all in MAF input with the K&N filter:




A screen shot of the last pull with K&N log:



and the ECU+ log here:

http://tinyurl.com/pzev4

 

I guess that I am being overly conservative with my tuning. If I see any spikes like that in my knock log, I am trying to eliminate the the spikes. I guess this lends itself to the question, "what level should be considered knock?". I have always just assumed that a suden spike from the norm to be knock.....but it seems you are ignoring that as knock. Will a "real knock" spike higher than 2.50 volts?


HiVoltEVO8

 

I've learned on my car that anything over 2.1v's really likes to pull timing. (so this is where I have knock compensation set) 1.8 to 1.9V pulls about 1 degree, sometimes it pulls 1 or so under 1.8v.

I consider any knock spike that pulls timing a knock event worth looking at.

If you look at that log, that knock spike at 6.20 time pulls some timing, and you can tell by how long it takes to die down. I consider that a knock event worth taking care of and I pointed that out above.

Keep in mind, I hadn't really messed with adding timing in until a couple days ago. So I am kinda pushing and pulling these tunes, these are not final tunes.

I have however been taking time out up top for sometime on my tunes with 91 octane.

 

Bryan's the man when it comes to ECU+ tuning!

Tom

 

you're the man for making it!

http://www.yourethemannowdog.com/