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Old 08-24-2011, 08:18 PM   #1851
paul@YimiSport.com
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Quote:
Originally Posted by arco View Post
Is there a big difference in tuning the JDM motors and ecus versus the USDMs? I was talking to Paul at Yimi Sport a while back and Rick at Rallinspired and they both have not tuned 207s. They said it would not be a big deal and that once you know how to tune an engine, they are pretty much all the same. Any input?
We must have had that conversation a while ago because I have tuned several EJ207 now. V5, V7, V8 motors/JDM ECU's and also a couple
207's with USDM ECU's. There are some definite differences in what the 207's like versus the 205's.
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Old 08-24-2011, 10:45 PM   #1852
lil'redwagon
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paul knows what he's doing. i'd trust him with a tune.
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Old 08-24-2011, 10:46 PM   #1853
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so i have a 2005 legacy non turbo and i have an engine knock i wanna tear down the motor and rebuild it myself i bought the manual to do this.....when i dropped the oil pan shavings were mixed with the oil. how bad is that??? and im thinking about either selling or modifying the car just wondering can the front block of an sti motor be mounted on the auto trans of the 2.5i motor that i have?? and if so does anyone know where i could get a used motor like that for cheap or if there is anyway to do that to my current motor during the rebuild process i know these are dumb questions.
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Old 08-24-2011, 11:55 PM   #1854
arco
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Quote:
Originally Posted by paul@YimiSport.com View Post
We must have had that conversation a while ago because I have tuned several EJ207 now. V5, V7, V8 motors/JDM ECU's and also a couple
207's with USDM ECU's. There are some definite differences in what the 207's like versus the 205's.
Yeah it was a while ago. I was actually your first 207 to get tuned but if you remember, my AVCS wasn't working. I did figure it out though after some time. It was my NPS throwing an inverted signal from my 05 6 speed.

I didn't mean anything towards you Paul. I hope you didn't infer that from here. It's hard to acknowledge emotion online. I had a cool experience with you.


Back to my question with the exception of you, would a tuner with no experience with a 207 be ok with tuning a 207? Remember we are assuming that the tuner is an experienced tuner with the 205 and 257.
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Old 08-25-2011, 12:34 AM   #1855
langsbr
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A true tuner can tune a motor - some tuners may have more institutional knowledge regarding subaru motors, but if they are a good tuner and experienced with one platform, they should easily switch to another.
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Old 08-27-2011, 07:01 PM   #1856
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Quote:
Originally Posted by kayen View Post
80 Pages seems like a lot, but it's not really. You are going to be dropping anywhere between 4-5k just for the EJ207 or between 8-10k if you get with a 6 speed, brakes, etc...

Might be a good idea to take the time and learn what you are getting into. Also yes we know there will be questions, but most of them can be answered just by doing your homework. Once you know whats going on and still have unanswered questions, ask away and hopefully they will be constructive.

I actually have abuilt motor Ej205 didnt catch a error in time and there my motor went, so now im just looking for something stock, and most powerful.. reliability! the V7 spec C sounds like the most reliable so thats what im aiming for
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Old 08-29-2011, 11:27 PM   #1857
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I was looking this evening at the IAT compensation table for the MAF, for my V9.
From the factory, it's all zeroed out!
Other cars have all kind of compensations.

Did anybody open up one of these ECU's to see if the IAT is not bypassed internally to the pin from the intake manifold sensor?
I know that on Romraider somebody opened up a Group N and found the internal bypass to the intake sensor pin.
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Old 08-30-2011, 08:06 PM   #1858
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Well, apparently all Sti and WRX USDM and JDM start having zeroed out IAT compensations in '06 (JDM in '05).
A theory was that the MAF is internally compensated, but the part number did not change till GRB (G12). With different internals, requiring a different ROM, backwards compatibillity of parts replacement would be compromised.

I am going to take a peek "under the hood" of my ECU anyway.
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Old 08-31-2011, 07:55 AM   #1859
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The connections inside the ECU are all normal and direct.

There is also a table that calibrates the IAT sensor. I will try to look for the sensor calibration table for the manifold sensor, probably found with the Group N rom, just to see how different that calibration may be.

So, I need a bit of help now:

Last night I attempted to flash my 2002 WRX ECU and bricked it, due to voltage out of range.

Lots of reading yielded: that '02 are prone to bricking, especially due to voltage, that the unbricking procedures shown and services offered are for 32bit 04+ Sti, 06+ wrx, that the voltage needed was 12.58 volts ( I thought that 12.88-12.66v was insufficient and brought out a battery booster box, as I was trying again and again to complete the flash).

There's the window up trick, there are couple things to try, to lower the voltage.

But: I have to unbrick this ECU. Where do you send 16bit ECU, what utilities are there for this?

I would really appreciate some help with this.
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Old 08-31-2011, 10:04 AM   #1860
lil'redwagon
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sorry to hear that man.

as far as unbricking a 16 bit ecu, i've sent my 2002 wrx ecu to cobb before and they unbricked it. BUT, it was bricked by an accessport. if you were using RomRaider or ECUFlash, i'm not sure if cobb would touch it. but they have the capabilities.
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Old 08-31-2011, 11:27 AM   #1861
fastnoypi
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Quote:
Originally Posted by Vlad View Post

But: I have to unbrick this ECU. Where do you send 16bit ECU, what utilities are there for this?

I would really appreciate some help with this.
tactrix.com has an ecu recovery service. I think Joe at Goodspeed has a bench flasher to recover it as well.
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Old 08-31-2011, 11:59 AM   #1862
Vlad
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thank you, guys
Hopefully, Tactrix is now offering the service for 16bit as well, although it's not on their advertisement.
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Old 08-31-2011, 02:39 PM   #1863
Vlad
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So the IAT sensor scaling is one way for all cars and different for group n. The one for group n probably properly drives the manifold sensor.
One could use that sensor and reflash the calibration for it.

I am getting feedback that one can't brick an ECU with the voltage out of bounds error, due to the reflash being only in an early stage at the point of voltage check.
I will try to swap the ECU in again tonight.
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Old 09-01-2011, 07:23 PM   #1864
Vlad
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So, it was a coincidence of the communication being lost with the ECU and the flash writing process never actually beginning.
I tried everything to lower the voltage, but it would not drop.
The fix was a new version of ECU flash, that the guys at Tactrix were nice enough to send me, that contains new drivers for the open port and allowed me to flash my 2002 ECU right away.

It now runs my EJ207 (with my AVCS disconnected), does not seem to have any problems driving around the block, off boost.
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Old 09-02-2011, 06:15 PM   #1865
K1WRC
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Question: How aggresive of a cam can you run on an otherwise stock EJ207? (just worried about valve clearance and full advancement of avcs) I've been looking at Kelford's either 264's or 272's. I want to be able to carry the powerband out further without the big dropoff. It seems the internals are plenty good for 30r size turbos, and I'd rather not break open the case if possible. Thanks EJ207 guru's
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Old 09-02-2011, 08:07 PM   #1866
ToneWrx02
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Quote:
Originally Posted by K1WRC View Post
Question: How aggresive of a cam can you run on an otherwise stock EJ207? (just worried about valve clearance and full advancement of avcs) I've been looking at Kelford's either 264's or 272's. I want to be able to carry the powerband out further without the big dropoff. It seems the internals are plenty good for 30r size turbos, and I'd rather not break open the case if possible. Thanks EJ207 guru's
Go nuts lol get any cam u want! pick the 272
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Old 09-02-2011, 08:07 PM   #1867
Clark Turner
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You will want the entire kit with springs and retainer. You should not run the factory AVCS map with either cam. You will need the AVCS maps tuned.

C
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Old 09-02-2011, 09:18 PM   #1868
K1WRC
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It will definately need to be tuned, but I was just wondering if there could be interference issues specifically in the case that it wont have the ability to use all that the avcs has to offer

Sorry for any lame questions, I am just trying to figure out what could potentially produce the broadest powerband, and I think having the ability to fully advance the avcs would help achieve that
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Old 09-02-2011, 10:34 PM   #1869
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Yes. The AVCS map will need to be set for the cams.
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Old 09-03-2011, 12:57 AM   #1870
i2cou4u2
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Does anyone know if the WRX rear timing belt cover fit the V8 EJ207?

I had a tab break off of the lower right hand side of the center section and I am in the middle of the swap. Also if I do need to get another one for the EJ207, where do I get it?
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Old 09-03-2011, 02:38 AM   #1871
KenSekiguchi
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Quote:
Originally Posted by i2cou4u2 View Post
Does anyone know if the WRX rear timing belt cover fit the V8 EJ207?

I had a tab break off of the lower right hand side of the center section and I am in the middle of the swap. Also if I do need to get another one for the EJ207, where do I get it?
Hey, contact Jeremy at Outfront Motorsports, he might be able to help you out. Tell him Ken Sekiguchi referred you.

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Old 09-05-2011, 05:17 PM   #1872
i2cou4u2
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Quote:
Originally Posted by KenSekiguchi

Hey, contact Jeremy at Outfront Motorsports, he might be able to help you out. Tell him Ken Sekiguchi referred you.

--
Ken Sekiguchi
Thanks!!!

Also I noticed that on my version 8 motor, it has an adaptor plate in between the oil filter and the oil filter. It had two harnesses coming off of it. Is this aftermarket or am I missing something?

Thanks
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Old 09-05-2011, 05:20 PM   #1873
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Quote:
Originally Posted by i2cou4u2

Thanks!!!

Also I noticed that on my version 8 motor, it has an adaptor plate in between the oil filter and the oil filter. It had two harnesses coming off of it. Is this aftermarket or am I missing something?

Thanks
Sounds like an aftermarket sandwich adapter, usually the sensors screwed into it will be for oil pressure and temp gauges.
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Old 09-05-2011, 05:52 PM   #1874
i2cou4u2
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Sounds like I can just remove it then. Thanks for the help.
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Old 09-06-2011, 06:26 PM   #1875
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Quote:
Originally Posted by i2cou4u2 View Post
Does anyone know if the WRX rear timing belt cover fit the V8 EJ207?

I had a tab break off of the lower right hand side of the center section and I am in the middle of the swap. Also if I do need to get another one for the EJ207, where do I get it?
The timing cover from my 2.0 USDM would not fit my v8.
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