This is a tune I came up with while waiting for my Rage tek tune. I just modified my original. All I did was add some boost and trim some fuel. It's some what conservative but I figure leaning the car out and upping the boost netted me some extra hp.The AFR are low 11's. I'm still trying to improve the tune so any help is appreciated.
Mods are in my sig.
Looks good to me. There's only 1 breif instant of Knock, which probably isn't even actual knock.
I'd try for just a little leaner. Be sure the engine is over 180 before taking anymore fuel out though. If you had the engine a little too cool on this last run, A/F will get leaner with a hotter engine. With a 180 stat and 45 degrees ambient temp +80mph this could happen. I can't tell the engines temp because you didn't log it.(see below)
Asside: When tuning, try to use as many of the PIDs, I have listed in the "What to Datalog?" sticky. It will help you, and everyone else by giving all the needed info.
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"Just because someone goes fast doesn't mean you should do whatever you think they did.
This path assumes they knew what they were doing, which isn't necessarily the case"..........RB Racing
can you log the open loop AFR also. id like to see that also but boost looks very nice, but want to compare your afr's to your boost maybe you can make some more power if its not to rich.
try getting some of your timing which is in the 13-18 range up in to the 20-25 range and that should help rid some knock. yoru running alotof boost, what are you on? stage 2 pcm or something. and its running rich at the end there trying to project the engine from all that knock and high boost.
can you log the open loop AFR also. id like to see that also but boost looks very nice, but want to compare your afr's to your boost maybe you can make some more power if its not to rich.
Note open loop afr is a target.. not a measurement..
try getting some of your timing which is in the 13-18 range up in to the 20-25 range and that should help rid some knock. yoru running alotof boost, what are you on? stage 2 pcm or something. and its running rich at the end there trying to project the engine from all that knock and high boost.
im using a S2 ECU
i lowered boost by adjusting the wga so it dropped it a bit to about spike 23 and hold 20ish if i remember correctly
i have a friend that knows his way around the diablo more than i do so i can get him to help me with the timing
Thanks i'll play with it some more and post another log
*EDIT*
i tried messing with it myself, but couldnt find out how to adjust the timing, how do you adjust it? can you adjust it?
Last edited by SRT-4_ACR : 01-11-2009 at 05:44 PM.
right nemo i was aware of that, but still it will let you know what its targeting right? its still a usefull pid right or its useless?
The target F/A ratio is what the pcm is trying to get to. When you change the fuel settings on the diablo it is changing this ratio. So it really isn't a recorded measurment, the only thing that makes it change during a log is whether your open loop or closed loop. I don't really know what it would be useful for.
Here is my second log guys. Take a look at it if you can and let me know what you think.
Mods:PTP Wastegate; Exhaust Depot Beast BFMIC;
PTP 75psi FPR Mod; Walbro 255 FP; PTP Hardpipes w/ Greddy RS BOV; Injen Intake; Needswings DP (no cat) w/ e-cutout; NGK Powerdex Wideband;
Running Shell 93Oct. and of course DSP Predator. I have a Fuel Pump Rewire i'm waiting to put in when it warms up.
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How does this log look?
Linear Mode
