CaneZMD

iTrader: (1)

So I finally did a couple tuning runs tonight. I couldn't get MPS to find the Zeitronix, but the zeitronix logger was working.

As far as the lean condition goes, It was definitely a problem with the 10% load column. I hit the 10% column at -1 psi and the 20% column at 0 psi. It runs rich there now, I'm working on that.

Concerning the 0% column, I changed it to str8's numbers and honestly haven't noticed any difference. But I also haven't done any wot pulls with the sc belt off. That I'm gonna save for later, but idling and low load driving isn't different.

Now for the kicker, I logged one pull in second gear from 1500 to 5750. It stopped at 5750 because the engine went into limp mode. I heard what I thought was a pop (not a metal sound, more like a misfire?) and the power died. ECU light was on and engine wouldn't reve past 2000 rpm. I got two codes, one was 1122 (Throttle actuator) and the other I misread but it had 116 something. I cleared the codes and it runs fine.

I checked the logs and their were no knock events in the utec logs. The af's were pretty lean though, according to the zeitronix, between 12 and 12.5. At 5500 rpm with 5.7 psi right before it lost power, I was at 12.10. So that certainly needs to be lowered. From what I can tell on the zeitronix log, the first thing to cut was the tps.

Lastly, the UTEC logs looked like it was ADDING timing, not taking it away. It showed timing as being 20+ with OEM timing reading as +10. That's odd, I thought the oem ecu should be reading as +20.

str8dum1

iTrader: (11)

12ish is fine for 5500 rpms. max power is AFR of ~12, plus second gear pulls are too fast to get much meaningful data.

either way, your logs dont tell us much. you need a log with these params all in 1 place
[RPM] [PSIG] [TPS] [Load] [Knock] [IDC%] [IGN] [Wide Band]

athenG

iTrader: (2)

Can you post your Temp Compensation table? Is Utec adding timing coz ignition advance of 20-21 at 6psi is a little high at around 5000rpm (You dont want Utec adding timing on the Temp Compensation table).. Heck I have water/meth and I'm not even close to 20 deg. I'm curious what timing you are running above 6000rpm. On the safe side, I wouldnt run AF above 11.8 past 5psi...

OEM timing dont matter coz Utec has full control of the ignition, this mean your Utec tune is running more timing than what the ECU wants.. OEM timing curve is pretty good, what you are reading is what the ecu want to run at around peak TQ. The ECU will always run the lowest timing advance around 4500-5500rpm so dont be surprise if you see the ECU timing dip to the 10's, the ECU will eventually add more timing as you go past 5500rpm.

Can you also post your knock settings? I'm concern coz that may not be set right.. Maybe your car is just not prone to knock but at 21deg timing around peak TQ and 12.5 A/F @ 6psi is a little bit on the edge on pump gas.

str8dum1

iTrader: (11)

also depending on what he used to log, those values are averages of both the accel and decel values thru those load point. thats why you can't use that table in UTI to tune with bc the lean decel values give an inaccurate value

you should post use a screen shot of your timing table values from your utec. the more you dive into this tune, the less experience your tuner seems to have.

athenG

iTrader: (2)

+1 on posting the Map but UTI is pretty good at averaging fuel/timing out.. First it is hard to hit mid load (50-80) on deceleration because as soon as you let go of the gas the TB close and you will loose pressure right away, unless you are doing part throttle driving and not WOT pull. Also his logs are just a couple of run and usually on deceleration or shifting you will see a jump on the load, his timing and the load being hit is pretty linear as he build boost so that tells me it is only a couple of pulls. I do use the UTI GUI to do a spot check and they are usually accurate every time I look at my logs.

CaneZMD

iTrader: (1)

I don't know what that MPS logger was reading. The UTEC logger shows that the timing is pretty good. I did a couple of 3rd gear pulls today. It's running 16 degrees timing from about 3300 (40% column) then it decreases to 14 degrees by about 6000 rpm. I think that's pretty good. 6 psi comes at 5300 rpm. At 5300 rpm the timing is at 16.5 degrees and the af is 11.7. (not af of 12 with timing of 21 degrees like MPS was reading. )

As far as knock threshold:
upto 2000 =70
upto 3000=60
4000=50
5000=40
6000=35
7000=30

Now I'm trying to figure whats going on with my throttle body. I made post in the FI forum about it.

athenG

iTrader: (2)

Are you aware of the A/F delay with MPS and UTI? I'm using the turboxs so I'm not to worried about the delay but for third party wideband, you need to use the raw logs for tuning. Try matching RPM, Load, TPS and IPW to figure out how much is the delay. Like st8dum1 said, raw logs is more accurate especially with 3rd party wideband.

Edit:
You are not using MPS to log A/F so you should be ok. I'm curious how does zeitronix incorporate the rpm with its log..

str8dum1

iTrader: (11)

ya with the TB issues along with the tune which seems pretty off, there's more problems with your car than 1 solution will fix. the car needs to be mechanically sound before you can hope to get a solid tune.

good luck with the TB and everything else.