First log of a friend's tuned evo IX please help..complete newbie

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Jul 30, 2007 | 04:41 PM

#16

mrfred

EvoM Guru

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From: Tri-Cities, WA // Portland, OR

Quote:

Originally Posted by DimitrisIX

so you are saying an increased ign. advance degree like 12 at redline will get me 60 more hp at the wheels?

Here is what my research has shown so far.
What else should I look out for besides:

knocksum (0-3 is acceptable),
A/F (11.5 with 12.0 at spool up) with wideband,
injector duty cycles (<100%)

anything else I should look out for?

If your car truly is at 1.7 bar at 7000 rpm on pump gas, then 8 degrees is probably appropriate. The key is to first set a baseline afr with conservative timing, and then slowly increase timing over each portion of the rpm range. As consistent knock (≥ 4 counts) begins to occur at certain rpms, then back off the timing by 1 deg at that rpm and continue with the other rpm ranges. You'll need to smooth all the tables after that and make sure everything runs well at part throttle. If you really want to fine tune, then you can start tinkering with afr again and retune the timing. It goes on and on and on...

And I can't stress enough that you need to stop using that timing table immediately and probably turn down the boost if you are running on pump gas.

Sep 6, 2008 | 05:09 AM

#17

ghamatos

Newbie

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From: Greece

Quote:

Originally Posted by mrfred

The timing is the same from 3500-7500 rpm. The timing should be lower at the lower rpms and gradually increase as the rpms increase. The timing values at 7500 rpm are reasonable, but those same values at 3500 rpm is crazy. I can't see the logs that you posted, but I saw that you said that the knock sum numbers are low. I'm pretty surprised. I think the reason is that a WOT 2.0 bar log would probably be up in the highest load columns where the timing is actually conservative across the rpm range. Driving the car at 3/4 throttle where it would run in the 180-240 load columns would be potential disaster though (i.e., blown motor). My suggestion would be to immediately return to the stock timing maps and gradually adjust those.

Quote:

Originally Posted by mrfred

And I can't stress enough that you need to stop using that timing table immediately and probably turn down the boost if you are running on pump gas.

Sorry for reviving such an old post.
Searching the site for tuned timing maps I stumbled on this timing map. It happens that I know this tuned evo owner. Reading your comments (and tkklemann's) and knowing that this guy (common friend of me and dimitrisIX) still keeps this timing map for over a year now, I would like to post his fuel (and vvt) map, because I'm not able to figure out, is how can it be possible to reach over 385 hp (crank) and over 48 kg torque with this setup without knock at any load and without damage (so far at least) and with pump gas (about 94 US Octan) and over 1,7 bar (AVC-R).