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Old 10-03-2012, 01:03 PM   #1
Torquey
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JDM v8 EJ207 WRB

Default Issues after EBCS install & new tune... pls check my logs =)

Hey guys... this is for my JDM v8 EJ207 swap, with TBE, stock airbox & Samco inlet. I just installed a COBB 3-port EBCS and had it e-tuned yesterday. Took the car out for a drive, and although it drove really nice and smooth off boost... when I pushed it, it only would go to about ~5psi, and then the car would start to bog down. I double checked the EBCS connections and made sure the three vacuum hoses were going to the right ports. The car did boost to 10psi w/o issue(i let off after that) with the old factory 2-port BCS.

Tuner says... looks like a big intake leak somewhere. I've looked the best I could and will look again. Wanted to get your input on the log, and see what you thought... and is it safe to drive it off boost for now. Thanks a lot in advance!

https://docs.google.com/spreadsheet/...JZkNuZUE#gid=0
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Old 10-03-2012, 01:27 PM   #2
mechatricity
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Do you have a wideband? And unfortunately we can't glean much from a log just puttering around town. There are too many variables. Just curious, why did you go with an e-tune? Aside from having Cobb near-by, there is also AWDtuning which does open-source. I understand cost can be a factor, but with the EBCS being historically tricky to tune, i would suggest getting it physically in the hands of someone who knows what they're doing. You've likely already paid for the etune so i can understand if this isn't too appetizing.
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Old 10-03-2012, 03:10 PM   #3
fastblueufo
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Your fuel trims are way off so that might indicate a leak. Or it could be the tuners fault if he isn't competent. Who did the tune may or may not be the problem. How did your fuel trims look after the tune?

Btw, there is nothing wrong with an etune if you have a competent tuner. And tuning a 3 port isn't tricky at all to tune if your competent.
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Old 10-03-2012, 05:25 PM   #4
Torquey
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JDM v8 EJ207 WRB

Default

Thanks for the replies guys. The reason I had it etuned is because COBB doesn't do JDM ECUs, as the accessport is not compatible. AWDTuning is an option... but they are pretty far from where I live. Plus from what I know, my tuner is pretty knowledgable and experienced with tuning the ej207s.

What's the process for pressurizing the intake tract to check for leaks... any DIY methods? and 'fastblueufo'... i'm pretty much a novice when it comes to logs. Which A/F columns were you looking at specifically, so maybe I can compare them against my pre BCS/ tune logs. Thanks again
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Old 10-03-2012, 06:37 PM   #5
fastblueufo
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Quote:
Originally Posted by Torquey View Post
Thanks for the replies guys. The reason I had it etuned is because COBB doesn't do JDM ECUs, as the accessport is not compatible. AWDTuning is an option... but they are pretty far from where I live. Plus from what I know, my tuner is pretty knowledgable and experienced with tuning the ej207s.

What's the process for pressurizing the intake tract to check for leaks... any DIY methods? and 'fastblueufo'... i'm pretty much a novice when it comes to logs. Which A/F columns were you looking at specifically, so maybe I can compare them against my pre BCS/ tune logs. Thanks again
Look at af correction #1 and af learning #1, they will normally be close to +/- 5% to 7% on stock intake and tune. Your total ws +30 in that log. That's about what you would see if you had a sizable leak.

With you having your setup, you should get the tuner to tune you with the 16 bit speed density rom. It won't screw with your fueling if you get a leak somewhere in your system. Plus you get other kool features that a maf rom doesn't have for the jdm roms.
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Old 10-03-2012, 07:00 PM   #6
Black94Snake
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Either your tune is crap, or you have a pretty severe leak. As fast mentioned, your AF learning is damn near pegged. Since the car is adding alot of fuel, I cant see any reason why you CANT find the leak just be checking your couplers.
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Old 10-04-2012, 03:08 PM   #7
Torquey
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Thanks again for the input guys... i'll take off the TMIC tomorrow and check everything.

@fast... i'm guessing you're talking about the carberry ROM?
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Old 10-05-2012, 10:12 AM   #8
kbaldi_29
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Can you verify if he calibrated the maf sensor?
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Old 10-09-2012, 08:34 PM   #9
mikeydrives1
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You know what... i sometimes have this issue (on rare occasion) ever since the installation and re-tune with a 3port EBCS. After warm up, the car will bog and not go past 5psi .... ive done logs and found the WGDC to be pegged at 0% . i stop, restart the car and its like it never happend. Like i said, once in a blue moon.
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Old 10-10-2012, 01:46 AM   #10
djuhnk
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yeah your a/f correction is off the charts. Its a positive value so that means the ecu is adding fuel because of a perceived lean condition. Meaning you have got to have a leak going on somewhere
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Old 10-10-2012, 04:59 AM   #11
mikeydrives1
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Quote:
Originally Posted by djuhnk View Post
yeah your a/f correction is off the charts. Its a positive value so that means the ecu is adding fuel because of a perceived lean condition. Meaning you have got to have a leak going on somewhere
Lets think about that for a second... If there was a boost leak, which would mean less pressure / less air, wouldnt that result in an overly rich condition and not too lean?

If he was recieving more air than the map could compensate for, that would be leading to a rich condition.

Just trying to understand more myself, here.
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Old 10-10-2012, 10:36 AM   #12
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Quote:
Originally Posted by mikeydrives1 View Post
Lets think about that for a second... If there was a boost leak, which would mean less pressure / less air, wouldnt that result in an overly rich condition and not too lean?

If he was recieving more air than the map could compensate for, that would be leading to a rich condition.

Just trying to understand more myself, here.
when the engine is in vaccum (idle) and there is a leak going in, there is extra air coming in that the mass air flow sensor hasnt accounted for. More air than fuel is a lean condition. now when hes under boost, the pressure post turbo is under pressure and if the leak were coming from post turbo the correction value should turn into a negative value because of a perceived rich condition. if it is before the turbo but after the maf it would still be a positive value
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Old 10-10-2012, 01:19 PM   #13
Torquey
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JDM v8 EJ207 WRB

Default

Thanks for keeping this going guys. We took off the TMIC and checked all the intake plumbing. The most obvious one we found was where the Samco inlet met the factory afta-maf hose. Since the factory one's diameter is slightly smaller, it had sort of slipped off on the bottom. So we fixed that and tightened the clamps and zip ties on the other ones.. and checked for cracks/ leaks. We also seafoamed it for a couple of minutes to check for exhaust leaks... and all the smoke came out of the tailpipe and none from the exhaust manifolds. Will most likely log again today, to see any change.

@mikeydrives1 ... I checked one of my logs from couple of days ago, and Primary WGDC never moved from zero, even though the ECU value is set to ~38 on the tune. Unfortunately I wasn't as lucky as you with the issue going away on it's own after a reset. Could this be an issue with the EBCS being faulty?
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Old 10-10-2012, 01:40 PM   #14
mikeydrives1
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It very well could be. I double check all my settings .. DAMs at 1, AFR is responding properly at WOT and no check lights... just bogs and wont go. Ever since i installed a paranoid fabrications super grounding kit, its been behaving, so i felt it may have been a rogue electrical demon.

The only way for you to tell is to swap on the old EBCS or another 3-port ebcs to confirm its the issue
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Old 10-14-2012, 10:25 PM   #15
Torquey
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JDM v8 EJ207 WRB

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Quote:
Originally Posted by kbaldi_29 View Post
Can you verify if he calibrated the maf sensor?
Sorry it took me a while, but here is a link to my map. Please take a look and see if all the basics like MAF scaling, WGDC (it never changes from 0, even on boost) and other important tables look good. I also have a recent log from cruising on the highway, AFTER I checked and tightened all the intake hoses. Appreciate it guys.

https://docs.google.com/open?id=0B4I...kk0TlUtVnM0R00

https://docs.google.com/spreadsheet/...U1pUkgzMHAzNmc
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Old 10-15-2012, 07:21 AM   #16
Black94Snake
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Whoever tuned your car is a serious friggin tard! Must have been just a monkey mashing on the keyboard.

Reflash this map here, drive for a day and them post another cruising log.
https://docs.google.com/open?id=0B3k...WQ5VTJhOEpxTU0

Honestly, flash the map I posted and don't waste our time with anymore datalogs until atleast tuesday night.
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Old 10-15-2012, 04:30 PM   #17
Torquey
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Quote:
Originally Posted by Black94Snake View Post
Whoever tuned your car is a serious friggin tard! Must have been just a monkey mashing on the keyboard.

Reflash this map here, drive for a day and them post another cruising log.
https://docs.google.com/open?id=0B3k...WQ5VTJhOEpxTU0

Honestly, flash the map I posted and don't waste our time with anymore datalogs until atleast tuesday night.
lol... i appreciate your honest feelings! Thanks for taking the time to look at it. Can you please tell me what is jacked up about my map... in somewhat layman's terms?! Also would this have had any effect on car only wanting to boost upto ~5psi and WGDC staying at 0? The only thing i saw you made changes to was the MAF scaling table... was there any other ones you edited? Thanks so much for your response!
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Old 10-15-2012, 04:33 PM   #18
Black94Snake
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Your fueling is clearly jacked up. Since you claim to have the stock airbox, I merely put the stock mass air curve in. I didn't change anything else, because quite frankly... I'm not your tuner. I'm not going to do the work he should have done... For free.
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Old 10-15-2012, 04:51 PM   #19
Torquey
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Quote:
Originally Posted by Black94Snake View Post
Your fueling is clearly jacked up. Since you claim to have the stock airbox, I merely put the stock mass air curve in. I didn't change anything else, because quite frankly... I'm not your tuner. I'm not going to do the work he should have done... For free.
Got it... thanks again. I'll flash the map by tonight or tomorrow and do some cruising/logging and post up.
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Old 10-15-2012, 05:13 PM   #20
BlazeRex
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Wow, stock box and injectors?.. Try Snake's tune and get back to us...
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Old 10-15-2012, 05:24 PM   #21
Black94Snake
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Quote:
Originally Posted by BlazeRex
Wow, stock box and injectors?.. Try Snake's tune and get back to us...
Stock airbox, and his MAF flow values were all about 30% LESS than stock...
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Old 10-15-2012, 05:50 PM   #22
BlazeRex
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Quote:
Originally Posted by Black94Snake View Post
Stock airbox, and his MAF flow values were all about 30% LESS than stock...
I know, I saw that and all I could do was shake my head...
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Old 10-15-2012, 05:55 PM   #23
Black94Snake
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Quote:
Originally Posted by BlazeRex
I know, I saw that and all I could do was shake my head...
did you look at his waste gate duty cycle tables?
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Old 10-15-2012, 10:09 PM   #24
BlazeRex
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Yeah, they clearly didn't understand how the system operates. Target looks okay, he really loses it with the Intial and Max duty cycle.
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Old 10-16-2012, 03:14 PM   #25
Torquey
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Alright fellaz... flashed the new map from 'Snake, last night. I know he said to drive for a day before logging, probably to give the ECU chance to adjust... but I was too impatient ... and logged it on my next cruise.. w/ strictly NO BOOST. Please take a look and see if the AFR numbers and everything else look better:

https://docs.google.com/spreadsheet/...4dnEzVVE#gid=0
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