DSMlink experance is needed

i just logged my first run on dsmlink V2

mods in sig
stock fuel
stock exhaust
MBC@ 9-10 psi
MAF un-Hacked

click below to download log:
http://www.dsmlink.com/forums/attachment.php?attachmentid=2228

Thanks,
Jake

The log looks pretty good. However, I'm thinking it's because you're being such a pussie and running extremely low boost ;) Seriously, start turning the boost up a little at a time until it reaches 14-15psi. If you're still not knocking, take a little bit of fuel away. Stock 1g timing curve is fairly aggressive, so I'd leave it alone for now. Get that stock exhaust out of there! A fuel pump would be good too.

Idle airflow seems a tiny bit high, but it's probably because you need to adjust your BISS like you said - your idle is set at 800 but it's actually idleing at ~950.

Overall, the log looks good (for low boost, of course :p )

Unless I missed something this should be for a 2g? The car in the sig is a 95, and the term "V2" should only apply to 2g DSMlink, since the 1g version is on its first revision, unless the client being the same for both types gives people the impression its v2. At any rate, I'm going to assume 2g.

Idle airflow is very close to the "correct" .27 grams per rev, which is good.

Timing is on the stock curve, but it is high because the airflow per rev drops to 1.3 by the end of the gear. Remeber that 2.1 is the threshold for the highest load maps, which results in the typical 16-17 degree max timing level. 23 is awefully high, but at such low airflow, the mitsu engineers deemed it safe and appropriate. More boost will take care of this ;o) 1g maps are actually a little less aggressive, since timing gets pulled back out over 6500 rpm or so! I think they may just be more agressive when you lower the airflow signal with an AFC or similar, which results in the huge timing numbers 1gs see, but this is just speculation. I havent seen the actual changes with airflow/rev anywhere.

There was a little wheelsping and then a bog on the launch. Doesnt matter, just thought I'd mention it.

There is a pretty good misfire in first gear, you can easily see it in AFR and front O2, and IOT and IDC (injector on time, and ijector duty cycle). Usually ignition related, plugs and/or wires. What gap are you running? The rich mixture could have just bollixed the plugs on the stutter box, since it was only a problem in first gear and the others look fine. Pretty common. But I would still shoot for about a 028 gap if you're not there already.

I like the fact that these logs go right to 7k. So may poeple post logs that are just half of the information. Thats about it for the current log.

About the future, like geek said, time for more boost! I would lean out now at low boost to 11:1. On stock fuel, and stock MAS (which has all indications of reading correctly) you can place reasonable trust in the DSMlink AFR calculation there. Old AFR divded by New AFR, minus 1, will give you the percentage change for your WOT sliders in the fuel table. 10/11-1, 9% will do it. Leave timing stock (zeroed). Start to raise boost a couple psi at a time watching for knock. At this low airflow level you could probably run over 12:1 and not hurt the motor, but its good practice.

A 14b should just fit inside the stock injectors limitations if you keep AFR at 11:1. At stock AFR it may run out of IDC sooner than the 30 lb limit. The stock pump on a 2g is pretty good, just be sure it is rewired. That changes everything. It will cover a 14Bs output, but again, watch the logs. Under "Dash" set your knock CEL for 3 degrees perhaps to be safe. 5 can be a little high. Fuel system upgrades are always a good idea though, so if you had any in mind, feel free.

If you want to figure out the Idle speed thing, log ISC Position and Learned Idle Adjust. In fact you are only captureing a few values, you could probably add mid and lo trims as well if you wanted to get into that stuff, but with stock fueling and MAS, you shouldnt have any changes to make. SOmetimes it can point out vac leaks and other small problems though...

Badass. We need more DSMlink logs on here.

ok well i turned up the boost too 15psi today and watched for knock with the stock boost gauge set as a knock gauge...very little ,if any.... went to a swap meet today so i didnt have time to log.

Be sure tommorow night to see a log posted in here.
im gonna log it at defaut settings with 15psi of boost ,as a baseline.

...and yes i have a 2g with a 6 bolt...

ok took two logs tonight....both at 15psi

first log was run at default setting at 15psi
http://www.dsmlink.com/forums/attachment.php?attachmentid=2241

the second log is -%5 fuel across the board(global) recommened by a dsmlink forums member....
http://www.dsmlink.com/forums/attachment.php?attachmentid=2242

all i messed with was fuel .....think i gotta pull sume timing in high RPMs

enjoy :grinyes:

I wanna see the logs too........ :crying:

Just go to www.dsmlink.com, download page, and make it happen ;)

The reason you see the knock at the top of the gear in the second log is the target timing is quite high. Its shooting for well over 20 degrees, as much as 24 by 7300 rpm. Too much. The reason the timing is so high is because the airflow is so low. Below 2.1 g/rev, the ecu considers it safe to run a leaner AFR and more timing advance ;) If you increased boost so that airflow was over 2.1, timing would be back down to 16-17 degrees, and you would most likely have no knock.

Your injector duty is quite low, 75%. So you can afford more boost at least as far as injectors go. The stock pump on the 2g is pretty robust too, and matches the 450s well. Doing the math (24 lbs/min times 1.25 (to add the 25% headroom you have in IDC) gives me 30 lbs/min. Funny how the math always works. At 30 lbs/min on my setup I am at exactly 100% IDC ;) That will get you over the 2.1 g/rev hump for the vast majority of each gear, and if it dips below, its so close the change applied to timing and AFR is minimal.

Something in our setups is causing a difference in the airflow:boost ratio however. At 15 psi, my car is at 30 lbs/min. Relevant mods that come to mind, external gate (makes exhaust act like a larger exhaust), full 2.25" hard pipes, KN fipk filter kit. Should be it. You might need a good 17-18 psi to hit 30 lbs if all goes well. As long as you dont go over 100% IDC, and more importantly dont knock (going over 100% isnt bad if you still end up around 11:1, etc), you will be fine. Keep an ey on timing, I would keep it down around 16-17. If you decide to keep boost at this level, then pull out the appropriate amound of timing from the sliders to emulate the stock curve (see dsmlink tuning guide, it shows the whole stock curve over 2.1, so you can more easily emulate it. Just see what timing is at each rpm point (when there is no knock) and pull out the difference between that and what it should be). Remember that your timing advance equals target timing set by the load map you are on (which is based on g/rev airflow) minus knock retard, and plus/minus anything on the sliders, at that particular rpm.

But to keep from getting overly complicated, I would recomend putting that 5% fuel back in, and start raising boost shooting for airflow in the high 20s, or as close to 30 as you feel comfortable going. Timing should max out around 16-17, and from this point start your fuel tuning, ultimately aiming for a AFR of 11:1 if you trust that your air metering is acurate (no boost leaks, unhacked mas, etc) and your fuel flow is accurate (injectors flow what they are rated at, you have the right data entered in options>car, and fuel pressure is correct at all boost levels).

i got you have to have a username and that stuff to get to DSMlink

Just go to www.dsmlink.com, download page, and make it happen ;)



When I try to register I get the following message:

Sorry, registration has been disabled by the administrator.

OTish: Registration is restricted to guys who own the product. Kinda sucks, because I'd like to learn to tune before I get the program, that way I'm not wasting time once I get it and not knowing what to do with it.

you can email the staff and ask for a read only permissin to acess their fourms. just as i have done.

I wouldnt asvise people to ask for membership unless they are serious about buying it. Otherwise we end up with a thousand and one fucksticks polluting the last really good forum. :)

I was under the impression that you wanted to see the logs, in which case you need to download the program, not register for the forums. The software is a free download for anyone to check out, fully functional. In fact, if i lose my DSMlink software for whatever reasons, thats where I get it back. The latest client may not be there, but you dont need full functionality to see logs.

Otherwise we end up with a thousand and one fucksticks polluting the last really good forum. :)


Hey, I'm not a fuckstick :mad:


I was under the impression that you wanted to see the logs, in which case you need to download the program, not register for the forums.


Right, but the problem is that 97 3clipse linked to the logs that he posted in the forum. So I would need access to the forum either way.

I dont get any login page or anything when I click on the links. Did you try to save them?

For the software, click on the "Downloads" page, click on the appropriate link. The first one, "Full install, v2.5" worked for me.

As for fucksticks, I think the people on this forum who are interested in dsmlink are aright :)

Edit>> Again, though, we can't see the log in question.

It was more of a generalization to cover the tooner crowd that is dying to get into the forums, dont take it personal guys ;) IF you do get access, be sure you dont post until you buy. There is a reason that membership is limited to DSMlink owners, and its a good one ;)

At any rate, there is a lot of good tuning info in this thread, and all we are talking about is forum membership, wtf!

3 new logs at 16-17 psi

first is defualt
http://www.dsmlink.com/forums/attachment.php?attachmentid=2264
second has -%5 global and according timming adjustments
http://www.dsmlink.com/forums/attachment.php?attachmentid=2265
3rd had -%7 global and even more timming retard
http://www.dsmlink.com/forums/attachment.php?attachmentid=2266

thanks ,
Jake

Something doesnt seem right. I dont think you boost is set at 16 psi, I think it is spiking at 17 psi. Take a look at boostest. Airflow is still below 2.1 g/rev. But timing is better. I kind of lost track of where I was going with your tuning. In the last log AFR looks good (just richer than 11:1). Try pulling one degree of timing out on the sliders from 5k rpm up. Your knock retard is still really low at 1-2 degrees, but pulling out a degree may get rid of it all.

Try to get full logs in 3rd gear. I can use the 60 or 70 to 90 times as a guage to see if we are making any progress or not, and compare to other logs.

my boost gauge reads that i peak at 17psi then it falls to 16 psi.
sorry ,i ran out of road...

Understandable :) I'm lucky enough to have plenty of highway space local.

Airflow/rev drops hard, if the guage is steady at 16, then its just the effects of the stock manifold and cams perhaps. But then again, I dont see this on the 2g now with the same stock manifold and cams. Interesting.

Well, work with what you have. At least you are high enough on the airflow/rev now to have normal timing. Try taking out that one degree and see where that leaves you.

ok tommor ill pull timming and log....

congrads on the evo....i had my first ride in one today... it was my friends 2003 evo gsr one word fast! he got it 5 days ago and hes only 17 it crazy...
here some pics...
http://photobucket.com/albums/v310/carkid0101/Evolution%208/
now back to topic.....