-= Ultimate Emanage Thread =-

[VR4neophyte]

Not on speed density yet. I'm still using the stock airflow meter for a little longer.

[Fred 62]

a stupid question :
runing "speed density" is when you run without airflow meter ( MAF ), no ?
you need to have a Greddy pressure sensor and greddy temp sensor or A/F sensor !
is it OK ?

@+
fred

[sairoland]

So i installed the injector adapter. I spent a few hours last night trying to get a decent tune.

I got to the point where I had some really good clean 2nd and 3rd gear pulls, .95-.97 on the narrowband the whole time with no knock at 17psi.

But now it stumbles a lot when i FIRST get on the pedal or if i go for very light accelleration.... basically stumbles and hesitates until I get some boost (or maybe once I break past a certain rpm is more what it feels like).

I had similar problems when i first started trying to tune with the ultimate. I also have to richen it up a lot just to get idle to cycle the o2's.... so perhaps thast cuasing issues when i'm cruising as well. So yeah, idles really well and cruises at constant speed ok... i get hesitation i'd say half the time when i'm fully boosted.... but whenever i mash the pedal any amount it heaves a little bit slower... stumbles/hesitates... then kicks forward hard. My neck is sore after i drive sometimes from that.

Maybe i fouled my plugs again? I'm tempted to throw a few hundred bucks away to get it professionally tuned but i'm worried i've have same problems a week or so after i get it professionally tuned. gah

But at least i have no check engine light :\

[pyun]

I picked one of the injector adapters up so when I pick up the EMU, I'll be prepared. I also have an Autosport Wiring harness I picked up last year, so hopefully that will help...I don't want to spend more money on the boomslang harness...

Brian

[VR4neophyte]

Originally Posted by Fred 62

a stupid question :
runing "speed density" is when you run without airflow meter ( MAF ), no ?
you need to have a Greddy pressure sensor and greddy temp sensor or A/F sensor !
is it OK ?

@+
fred

Yes, speed density is when you determine engine load according to rpm and boost pressure. You build a table based on that, and add fuel based on the values in that table.

Erik

[Rebel]

ANyone have any faith in this thing going full on speed density? Seems like people on the boards and locally are having problems getting it down without the maf. The blue emanage is lookin nice right now lol. Let me know what you guys think...

[VR4neophyte]

We'll see what happens. Give me a few weeks and I'll find out whether speed density is the real thing or not. So far, the EMU does everything it claims and a little more.

[VR4neophyte]

Originally Posted by reg22

I wish to share an Excel VBA program that I made which is sort of similar to BlackStealth's but with a simple GUI. How or where can I upload it to? Or can I just email it to somebody?

Thanks!

OK, guys, I've been using the utility without execution errors, but I am confused with some of the results I've been getting. It is producing airflow output Hz numbers that are larger than any of the airflow output numbers in the log. Knowing you'll want to check that out, I'm attaching the log for your reference.

In the log, the maximum airflow output Hz is 1657 Hz. In the table created by the utility, the airflow output numbers go as high 1908 Hz. How is the utility calculating the airflow output numbers?

[BlackStealth]

VR4neophyte: I think you discovered a bug in reg22's program. The highest airflow output in your data is 1657, so reg22's program should not report a value any higher than that.

Also, VR4neophyte I think you need to check your emanage preferences. It looks to me you've accidently capped the airflow output to 1657 max. Get this 2nd problem fixed, as you can accidently go lean at WOT.

[VR4neophyte]

Originally Posted by BlackStealth

VR4neophyte: I think you discovered a bug in reg22's program. The highest airflow output in your data is 1657, so reg22's program should not report a value any higher than that.

Yeah, that's why I posted. I created a speed density map based on that log with the utility, then did one manually too. The results were different enough that I figured something must be wrong.

Originally Posted by BlackStealth

Also, VR4neophyte I think you need to check your emanage preferences. It looks to me you've accidently capped the airflow output to 1657 max. Get this 2nd problem fixed, as you can accidently go lean at WOT.

See my earlier post about the stock airflow meter... it isn't clamped by any settings I've made, but is limited by the fact that the stock airflow meter is max'd out. Since the stock airflow meter can't measure any higher, and the EMU can only work with the information it is given, the airflow output amount is effectively clamped. I can still make the airflow output increase beyond 1657 Hz by increasing the airflow adjustment map percentage up from -48%.

But let's face it. The stock airflow meter is at its limits and is providing erratic readings. For tuning above that, I'll need to remove the stock airflow meter and go strictly with airflow output estimates.

Fortunately, as you can see on the log, I'm not close to going lean anytime soon. You can be sure I'll stay focused on the logged AFR as I tune.