First Logs w/ Evo16g

[joemathews]

Here's my first log--Evo16g, 17 psi, 560cc evo8 injectors, stock fuel pump, stock sidemount.

[guitarXgeek]

It definitely looks good so far. Yes, I would log some more data points so it would be easier to see any small dips in timing you may have (though it doesn't look you have many, if any at all).

[scottsee]

right on man. looks a little flat from 3900-4800. nice advance!

[guitarXgeek]

Originally Posted by scottsee

looks a little flat from 3900-4800

That's kinda what I was referring to. I'm willing to bet that if you added more data points you'd see a small dip in timing in that area. Obviously small dips like that are not TOO big of a deal since 1 degree of knock retard is only ~3 counts of knock (1 count of knock = .35 degrees of timing retard).

[scottsee]

thats right. try leaning out a little around 3900-4800. see if that helps any

[EclipseRST]

God damn I'm good


Not bad for a "Jake Tune By Ear" lol!

Finally got the logger workin huh Joe? Its about damn time, AGAIN... Thanks to me!

[EclipseRST]

Thats ghey apple for ya !

[kjewer1]

You want a drop/flat spot in timing up to ~4000-4500. Thats where cylinder pressure are highest (torque peak) and rpms are too low for much timing. I think the curve looks balls on. A little too clean actually, I would start leaning out or even better raising boost and see what happens. Just be sure to write these settings down since they seem to be damn good.

[EclipseRST]

Originally Posted by joemathews

Well, let's not forget I had to turn boost down...

Originally Posted by 95 GSXracer

...even better raising boost and see what happens. Just be sure to write these settings down since they seem to be damn good.

Yea that had to have been the best quicky job I have done in tuning. It definately helps by working on these cars everyday! And you were saying everything I was doing was breaking your car... I see how it is, no love!

[EclipseRST]

Originally Posted by joemathews

"Want to go for a ride now? I'll peg the boost gauge for you."

Actually that was me that said that.


The day that you boost to 20psi is the day "me shat turns purple and smells like rainbow sherburt!"

Yea that was some good times, running from the cops, talking shit about hondas... lol He didnt really know what to expect I guess.

Joe you need to drive your car back over spring break! I'm driving down but its in Panama City Beach and its the weekend that your spring break ends on... Should be a good time man. Too bad you gotta be a douche and miss out!

[kjewer1]

You wont get every 200 rpm on an OBD2 logger I don't think. At best you're gettng 20 samples per second, divided by the number of things you are logging. You're best bet would be to log only RPM and timing. If there is a problem in the timing curve, then go back and log with O2. Dropping from 3 logged items to 2 items will increase resolution by 50%. Man, thank God for dSMlink. Datapoint like every .03 seconds, logging 15 different things

[joemathews]

Originally Posted by 95GSXracer

Datapoint like every .03 seconds, logging 15 different things

Yeah, yeah, rub it in why don't you?

[spyderturbo007]

Joe, Are you using the Pocketlogger software. If so, the max you will get is 10 - 12 s/Sec. Did you do the byte timing test? If you are at that data rate (10 - 12) you should have about 2x more points than you do. Like Kevin said, log only timing and rpm and then post that log.

[joemathews]

I just played with the byte timing, and lowered the delays quite a bit--I'm reading between 10-12 on my data capture rate. The inter-byte delay is 3000, and the inter-packet delay is 14. How exactly does the test work? If I'm getting "error counts," am I suppose to raise my delay settings until I don't get errors anymore?

[spyderturbo007]

Are you using v1.02 or v2.0?

With v1.02 you have to set the parameters manually. If you upgrade to v2.0 (Which I like much better), the byte timing test is automated.

By the way, the upgrade is free to people that have bought v1.02

EDIT: To answer your questions you start with the default settings and work your way down from there watching the error count. Start with the larger number (I don't remember which one it is I think default is 2400?). You want to decrease that number until the logger starts registering errors. Then increase to where the errors stop. Your objective is to get the timing as low a possible with NO errors. After dealing with the larger number....move to the smaller and do the same thing. You need to do this with the car stationary. Don't do anything else (like rev the engine, turn the wheel, A/C, etc.). Next, leave the logger on the "byte timing screen" and drive around for about 5 minutes watching for errors. Be careful not to wreck . If you see any errors just bump one or both of the timing settings up 1 notch. If you don't get any errors you are done. It will take a little time so make sure you write down your settings when you are done. You should also hotsync after doing the test.

If you have any other questions let me know!