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Old 08-01-2012, 01:46 PM   #1
n00bar00WrX
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Default Can someone please look at my log? I need help w/ knock

Hey y'all I was hoping I could get some help with my XPT stage 2 tune for EBCS. The car is a 2004 WRX with a Grimmspeed EBCS, Cobb up pipe, Godspeed down pipe, Gimmick Motorsports cat-back and SPT intake. Any info would be appreciated.

3rd gear pull showing knock, also the boost seems to spike up and down between 15-13 psi in second gear and when in 5th gear it's worse and around 20-15 psi spiking up and down and the car will buck back and forth when doing so. If needed I can do a log for other gear pulls.

Thanks

3rd gear pull: https://docs.google.com/spreadsheet/...PanZYTmc#gid=0
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Old 08-01-2012, 03:10 PM   #2
quazimoto
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It's 1 degree. It's no big deal. The oscillating in 5th probably can be fixed by slightly shortening your wastegate arm.
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Old 08-01-2012, 03:32 PM   #3
n00bar00WrX
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And the knock correction advance tables being all over the place like this is normal? Sorry, I'm pretty much new to all of this and find it confusing. It doesn't just bounce around in 5th gear, either, it's bouncing psi in like second gear as well so I was just concerned as it doesn't seem normal. I will try playing with the wastegate some more, thanks.
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Old 08-01-2012, 05:20 PM   #4
n00bar00WrX
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So I just shortened the wastegate 2 turns and it still had the same problem. I then shortened it 1 turn and still had the same problem and was also overboosting. After the 3rd turn I logged again.

4th Gear:https://docs.google.com/spreadsheet/...IcWxrTmc#gid=0

3rd Gear:https://docs.google.com/spreadsheet/...TaWZtYVE#gid=0
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Old 08-01-2012, 10:39 PM   #5
VFXWRX
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Do you have your bcs hooked up right? I had an overboost issue with the gm 3 port because I had mistakenly switched a couple of the vac lines. Boost hit target perfectly when I fixed it.
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Old 08-01-2012, 10:40 PM   #6
VFXWRX
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Also, next time log IAM and post a learning view snapshot, it gives a more accurate representation of the health or your engine.
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Old 08-01-2012, 11:00 PM   #7
n00bar00WrX
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Well I'm almost positive I have the boost controller hooked up properly I double checked it going by the install video on youtube. I will log IAM next time I get a chance. I should probably mention the car does have almost 98,000 miles but it does run perfectly fine other than this boost problem I'm having. It has run fine and I did an oil change when I did my most recent modifications (the ebcs, downpipe and uppipe). Have only had the car for about 13,000 miles and it has ran like a champ since but I have no hard evidence to back up the health of the car at this time.
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Old 08-02-2012, 09:06 AM   #8
endrswrd
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Ill start off by saying Yeah I am no expert, but heres my .02. But you need to log some more **** and get rid of **** that isnt necessary. Add IAM, Ignition total timing, IAT, A/F Learning 1, Final fueling base(calculated), and Feedback Knock and turbo dynamics. Get rid of Atmos pressure, Base Timing, Knock Correction Advance.

What you are probably in need of is a detuned turbo dynamics table because of the 3 ports ability to change boost faster. I dont have the rom raider at work(cant tell ya exact table name), but I would start with cutting 20% across the board from turbo dynamics and go from there. (Multiply all values by .8)

Last edited by endrswrd; 08-02-2012 at 09:15 AM. Reason: spelling + added logged params.
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Old 08-02-2012, 09:14 AM   #9
endrswrd
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Also, Your IAM must not be at 16 because you are cutting timing and adding timing in Fine Learning, However Without knowing your total timing I cant be sure what the whole picture is.
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Old 08-02-2012, 09:49 AM   #10
BlazeRex
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I agree turbo dynamics should probably be turned down.

Overall not too bad.
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Old 08-02-2012, 12:07 PM   #11
VFXWRX
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The XPT stage 2 'for ebcs' should already account for the added efficiency of the 3 port. You can check your wgdc's. They should be around %30 lower than your stock map.
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Old 08-02-2012, 12:49 PM   #12
n00bar00WrX
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I tuned the turbo dynamics tables and it seems to be running better. I'll keep playing around with them and the wastegate arm until I get it just right.

3rd gear:https://docs.google.com/spreadsheet/...lbW1RS1E#gid=0
3rd Gear:https://docs.google.com/spreadsheet/...xdzJGX2c#gid=0
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Old 08-03-2012, 10:10 AM   #13
quazimoto
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Quote:
Originally Posted by n00bar00WrX View Post
And the knock correction advance tables being all over the place like this is normal?
Open the ROM and look at the knock correction advance table. That table has to do with timing advance,not some much knock detection. That table is where the ECU will remove timing or add timing.
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Old 08-06-2012, 10:15 PM   #14
Beauch
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Shortening the wastegate arm doesn't always fix the issue, your logs seemed better before you adjusted your WG arm. I'd revert back to original placement and look for something else, try a little 93 for abit and see how timing is in learning view. It also tells your fuel trims. and recheck your lines for leaks. A vaccum line turns into a boost line. and check your air filter!
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Old 08-07-2012, 01:58 PM   #15
n00bar00WrX
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I've always used 93 octane. I am still having the problem and I have adjusted the wastegate multiple times with similar results. I am not sure how I had it adjusted when I had better logs but either way I have the same problem no matter how I turn the wastegate arm. It must be the tune but I'm not sure what to change to correct it and the folks at XPT Tuning have not responded to me whatsoever. I've checked the air filter already and also cleaned and oiled it. I have checked my lines multiple times as well. I might just get rid of the boost controller and get an OTS tune without EBCS...Any one have any other info as to what I can change on the map to help correct this oscillation?
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Old 08-07-2012, 04:00 PM   #16
tebriel
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Don't have the answer to your main problems, but if you have an oiled filter make sure to keep the maf clean with some maf cleaner
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Old 08-07-2012, 05:59 PM   #17
BlazeRex
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Quote:
Originally Posted by n00bar00WrX View Post
I've always used 93 octane. I am still having the problem and I have adjusted the wastegate multiple times with similar results. I am not sure how I had it adjusted when I had better logs but either way I have the same problem no matter how I turn the wastegate arm. It must be the tune but I'm not sure what to change to correct it and the folks at XPT Tuning have not responded to me whatsoever. I've checked the air filter already and also cleaned and oiled it. I have checked my lines multiple times as well. I might just get rid of the boost controller and get an OTS tune without EBCS...Any one have any other info as to what I can change on the map to help correct this oscillation?
You'd need to understand on how to tune boost tables to really get much further. Also ditch that oiled filter and clean the MAF now.
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Old 08-07-2012, 10:26 PM   #18
n00bar00WrX
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Yeah, I finally got a response from XPT so I'll try to work with them so I don't make it worse. Not to lay blame but I actually cleaned my air filter and my buddy oiled it with this K&N oil because he thought I should. Apparently that was a bad idea. I'm always open to constructive criticism. I will clean it when I get a chance.
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Old 08-16-2012, 01:53 AM   #19
n00bar00WrX
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Okay, scratch that last comment. I have emailed the folks at XPT multiple times and have only recieved one weak response. This thread was originally about knock but I don't seem to be getting any. I am still getting boost oscillation in all gears and am hoping someone could look at my map or tell me what I should do to correct this problem. XPT has a stage 2 map for the GMEBCS and for the Grimmspeed EBCS so clearly I got the wrong one but I should still be able to work around this without buying the map pack for the 04 WRX which is the only way I can find to get that particular map... please help. I'd rather not continue to take chances with the OTS maps and possibly get poor results.
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Old 08-20-2012, 01:54 PM   #20
n00bar00WrX
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Alright, suckin' it up. I'm just going to do the right thing and shell out the $500 for a local dyno-tune.
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Old 08-20-2012, 07:48 PM   #21
Beauch
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is it set for high WG duty? also it could be the grimspeed.... but it does sound more like ''What you are probably in need of is a detuned turbo dynamics table because of the 3 ports ability to change boost faster.'' -comment.
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Old 08-20-2012, 08:53 PM   #22
lukeskywrx
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XPT maps have killed several local engines, they are really agressive with both fuel and timing and dont pull back enough when the car starts knocking. Last one I looked at ALL the safety features to save the motor were turned off.
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