Quote:
Originally Posted by FI_Rubicon
Yes, with the Diablosport Trinty, I can carry a number of tune files in the device and flash the PCM when I want to change a tune. And that is indeed what I am doing.
The device also allows you to customize the tune with quick adjust parameters that take less time to fiddle with than loading a complete tune.
The interesting parameters that I have available (as software "knobs") are:
I can go up to 10 degrees of advance or retard:
WOT SPARK 1-3.8krpm
WOT SPARK 4-4.8krpm
WOT SPARK 5-7krpm
I can add or subtract up to 20% fuel:
WOT FUEL 1-3.8krpm
WOT FUEL 4-4.8krpm
WOT FUEL 5-7krpm
I have WBO2 connected and the device allows me to monitor and log interesting PIDs like:
ST KNK RETARD
LT KNK RETARD
BASE SPK
SPK ADVNC
Short term knock retard seems to just be the difference between BASE SPK and SPK ADVNC.
Anyway, before installing the HFS-4, my tune already had as much timing as I was going to get out of it.
Here are my settings for 25% methanol by weight:
I can go up to 10 degrees of advance or retard:
WOT SPARK 1-3.8krpm +8*
WOT SPARK 4-4.8krpm +6*
WOT SPARK 5-7krpm +8*
I can go rich or lean by up to 20%:
WOT FUEL 1-3.8krpm 2% lean
WOT FUEL 4-4.8krpm 5% lean
WOT FUEL 5-7krpm 6% lean
I think ignition is pretty much dialed in with the above and I get no long term knock retard and a little short term retard under extreme conditions but I understand that to be normal.
AFRs are about 11.6% across the RPM band at WOT and I am still fine tuning.
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Although the control knobs are nice and simple I really don't like them at all.
From experience, I learnt to better adjust a basemap accordingly instead.
Could you share with us what engine/head/turbo etc.. specs you have. Also ignition timing values/ spark plugs over stock and ignition system is a good reference aswell?
Mine was an Forged 1.5L 8.5:1 compression / complete stock head / GT2560R @ 22psi 6800-7200rpm.
Ignition system is haltech truck coils x 4 with high tensions. Stock heatrange worked fine with 16psi while increase heat range by 1 with 22psi.
Ignition timing was high 40Degrees on low boost tapering low 40s on high boost.
AFR was found to be 13.5-14 running WM40.