Looks pretty good, the file runs a tad rich at redline cyls 3-4 are missing from the idle stabilization, It looks like you MAF readings are a bit low for the size of the turbo (perhaps they are using an upgraded MAF?)
Even though you can log 3 blocks at a time, it is not a good idea to do so unless you need all three of those blocks together for diagnostic purposes. I feel that block 031 (lambda) should be logged by itself, it will sample at a much higher rate and give you much more accurate data.
Ive been going into lag mode ever since my Giac FXK04 tune (2 months). I realized a fmic was needed with the tune. However im still running a stock intercooler (Michigan cold weather).
I have to keep an obd scanner with me all the time to reset the codes. Im always getting system too rich. Getting frustrated. I finally finished finals adn have a little time.
I finally got to datalogging.....
While not in lag mode:
Block 20: im reaching #'s upto 9.8!
Block 115: Boost seems ok
block 26: Knock is thru the roof ranging from 5-26 V !
The thng that stumps me is that if i drive agressive it stays in tune mode, but as soon as i drive conservative, after about a minute, it'll fall into lag mode boosting max of 9-11 psi.
In lag mode:
Block 20: timing is good all 0's and some sporatic 1's and 2's
Block 115: Req boos is much above actual since actual is staying at the 9-11psi
Block 26: knock is still low at low rpm and works it way up to low 20's at high rpm!
I have an EGT gauge and it reads 7-800 F avg and 12-14 highway.
Could it be the intercooler affecting the timing (block 20)? Thus causing all the other shit...boost restrictions?
A Boost leak?
A check valve or something?
Still dont know what the hell the N75 does...could it be the problem?
Ive been going into lag mode ever since my Giac FXK04 tune (2 months). I realized a fmic was needed with the tune. However im still running a stock intercooler (Michigan cold weather).
I have to keep an obd scanner with me all the time to reset the codes. Im always getting system too rich. Getting frustrated. I finally finished finals adn have a little time.
I finally got to datalogging.....
While not in lag mode:
Block 20: im reaching #'s upto 9.8!
Block 115: Boost seems ok
block 26: Knock is thru the roof ranging from 5-26 V !
The thng that stumps me is that if i drive agressive it stays in tune mode, but as soon as i drive conservative, after about a minute, it'll fall into lag mode boosting max of 9-11 psi.
In lag mode:
Block 20: timing is good all 0's and some sporatic 1's and 2's
Block 115: Req boos is much above actual since actual is staying at the 9-11psi
Block 26: knock is still low at low rpm and works it way up to low 20's at high rpm!
I have an EGT gauge and it reads 7-800 F avg and 12-14 highway.
Could it be the intercooler affecting the timing (block 20)? Thus causing all the other shit...boost restrictions?
A Boost leak?
A check valve or something?
Still dont know what the hell the N75 does...could it be the problem?
Any experienced dataloggers please help.
The GIAC FX program evidences uniquely high timing correction thatt signifies knock is detected and continuing to be corrected for. I would have this problem fixed before the weather gets warmer. You can pretty much disregard the knock voltage reading when scanning with an enthusiast tool like vag-com. Those readings are secondary regardless as the correction factors for timing rely upon them solely and act accordingly. Your tuner may try and convince you that high timing correction is fine as long as your knock voltages are below 30. This is incorrect according to the folks who designed the entire engine management system so be sure to present that data to them as they were not aware of it in the past...
Originally posted by 400HPA4 Looks pretty good, the file runs a tad rich at redline cyls 3-4 are missing from the idle stabilization, It looks like you MAF readings are a bit low for the size of the turbo (perhaps they are using an upgraded MAF?)
Here is a graph of the A/F
Its gotta be a bigger MAF. With the Samco TIP k&n filter and Dahlback k04-15 set up, on 93 octane I would see much lower CF, zero across the board as a matter of fact and between 200-210 g/s MAF reading. So either this is MUCH tamer s/w, he's got a bigger MAF and something ain't right.
Renga, maybe you should be running more boost? Also can you go into more detail about your setup? And what octane do you use? Have you had the chance to dyno your car?
Originally posted by dfaudi Mike thanks for hte response.
So are you saying its a software issue?
could a small boost leak be causing the high timing issue? Or a bad knock sensor?
As well, how much does a FMIC help with the timing. Could the lack of the FMIC with the fxk04 tune be the problem??
You could definitely try out a FMIC, IF that is required by the software. It may help a bit. I would troubleshoot some other things first though. Your knock sensors are likely fine. They are doing their job and the car is retarding timing to protect itself. That's a good thing. It's always possible you have a boost leak. You can log 115 to check actual versus requested boost. Does your car always go into limp mode or do you sometimes run with full power? Regardless, check for a leak by doing the logs and if there is one and you fix it, ontinue logging channel 31, 34, and 20 after to see if all is well. If channel 20 continues to retard in the region of 8-12 degrees as others are seeing, than consult the software manufacturer to fix the timing issue. cheers! Mike
Originally posted by bhvrdr You could definitely try out a FMIC, IF that is required by the software. It may help a bit. I would troubleshoot some other things first though. Your knock sensors are likely fine. They are doing their job and the car is retarding timing to protect itself. That's a good thing. It's always possible you have a boost leak. You can log 115 to check actual versus requested boost. Does your car always go into limp mode or do you sometimes run with full power? Regardless, check for a leak by doing the logs and if there is one and you fix it, ontinue logging channel 31, 34, and 20 after to see if all is well. If channel 20 continues to retard in the region of 8-12 degrees as others are seeing, than consult the software manufacturer to fix the timing issue. cheers! Mike
Ill reset the codes to giveme full power, and if i drive aggressive its fine, but as soon as i start driving conservative, it falls into lag mode minutes after. Sometimes it holds up a bit longer than other times....i datalogged the boost...ill post after i graph it.
Originally posted by dfaudi I did some logging. Im still falling into lag mode. Then ill drive a bit and itll go back into tuned mode. Getting frustrating!
Looking at that log, the car is overtimed. I'd be willing to bet that due to that advanced timing if you log channel 11 you will see single digit BTDC everywhere due to the computer self adjusting down for the problem. You have ruled out a boost leak. ?id=2265766
The GIAC B7 A4 programs are no longer running the overaggressive timing. On the B7, their timing looks like this...
I would see if they can back down the timing for you about 6 degrees. Show them a log of your channel 11 BTDC before and after the fix for the overtiming and you will see more timing is actually being used after removing the excessive timing. I just received a logs from a fella with the same issue and they showed exactly that happening. Should be an easy fix for you. Good luck and let us know how it goes.
I found it kinda wierd that my throttle showed part throttle at full load/boost.
Funy thing is a month ago i was on the highway and all of the sudden my traction/TPS lights went on. My car was running like shit. I get home, disconnect the throttle harness, do a throttle alignment, tested the positioners with a multimeter and reconnected. Atfter that everything was fine,no more lights. Also, last week, i washed my engine bay, and on my way home the same thing happened. Everything fine again.
Could it be that my TPS is on its way, or is it just the tune thats closing the throttle from overboost?
Was on my way out of town today. Luckily my throttle positioner crapped out on me and left me stranded. Its pretty sweet when you are on hte highway and your gas pedal doesnt do anything.
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Hey Mike do you know if any of the FXK03 software has been corrected for aggressive timing since release ? I am probably running one of the earliest FXK03's out there and have never looked into software revisions despite some obvious timing issues in hotter months.
My FX is so old in fact that I am able to Lemmi tweak it which I believe is no longer possible in the newer versions.
Originally posted by QuattroRocket Hey Mike do you know if any of the FXK03 software has been corrected for aggressive timing since release ? I am probably running one of the earliest FXK03's out there and have never looked into software revisions despite some obvious timing issues in hotter months.
My FX is so old in fact that I am able to Lemmi tweak it which I believe is no longer possible in the newer versions.
I'd just give them a call to find out, but last I spoke with them, they're keeping it the same. If that's the case, it's probably great you have the older file so you can just tweak it. You may want to PM the user "Itchy Foot". He had some really good results reducing his timing. The car is now running consistently more BTDC since he did it. I'd see if he can point you in the right direction.
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