|
|
|
|
Thread Tools | Display Modes |
08-14-2018, 12:05 PM | #11726 | |
Scooby Newbie
Member#: 58485
Join Date: Mar 2004
Chapter/Region:
MWSOC
Location: Chicago IL
Vehicle:2004 RASC.207 WRX 5M PSM |
Quote:
* Registered users of the site do not see these ads.
|
|
08-14-2018, 12:19 PM | #11727 | |||
Scooby Newbie
Member#: 58485
Join Date: Mar 2004
Chapter/Region:
MWSOC
Location: Chicago IL
Vehicle:2004 RASC.207 WRX 5M PSM |
Thanks for confirming this. This is where I'm going to start also.
Quote:
Quote:
Quote:
To be clear I'm going to table my effort to get the AT4J121C ROM to work. The 7 tables will be easy to copy over so the A4TJ111C ROM will be my starting point. Again, thanks for your help and all of your replies. |
|||
08-14-2018, 10:12 PM | #11728 |
Scooby Newbie
Member#: 126376
Join Date: Sep 2006
Location: CA
Vehicle:2007 wrx lmtd silver |
hey guys quick question for those of you running the 32bit ecu and wiring running an ej207...do any of you guys run a flex fuel setup through an AP?
|
08-24-2018, 11:24 AM | #11729 |
Scooby Specialist
Member#: 142322
Join Date: Mar 2007
Chapter/Region:
TXIC
Location: San Antonio Tx
Vehicle:2002 wrx wrb |
V9 EJ207 Spec -C
I recently had what is supposed to be a V9 Spec-C 207 installed in my 02 WRX. However the engine will not start with the provided ECU, and there is no signal to the fuel pump. I am thinking the ECU may be immobilized.
The ECU part # is T1 22611AL380. From what I've found this part number should be from a GDB Spec-C Are there years or models the Spec-C were immobilized? Is there something else I should be checking? Are the V9 Spec-C engines dual AVCS? Can the V8 ECU be tuned to compensate for any difference in the heads, i.e. different flow rates? Last edited by gtfaded; 08-24-2018 at 11:36 AM. |
08-24-2018, 12:54 PM | #11730 | |
Scooby Guru
Member#: 82745
Join Date: Mar 2005
Chapter/Region:
SCIC
Location: So Cal
Vehicle:2005 Subaru STI 2003 EJ207 S204 Wagon |
Quote:
Yes, the v8 ECU can be tuned to whatever you want. Also, you can run the Carberry ROM on it along with his Flexfuel kit (if it's still available). Last edited by Fierysun; 08-24-2018 at 01:00 PM. |
|
09-16-2018, 12:48 PM | #11731 |
Scooby Specialist
Member#: 176408
Join Date: Apr 2008
Chapter/Region:
SCIC
Location: South OC
Vehicle:2005 EJ207 STy White |
To anyone that has an EJ207 swap and is dealing with P1491 when they plug in their old ECU (mine is a 2005), rest assured when the code is turned off in romraider you will have no issues passing smog.
After turning it off, I was still seeing P1491 in my "Temporary DTC" on learning view which was a bit disconcerting. From there I started researching and found an older post in this thread regarding someone having the same issue, but with a Saabaru, and their solution was grounding out the signal wire at the ecu by jumping it. You do not have to do this! Smog tech said there were zero pending codes, and I passed without issue. Just wanted to add that in for future CA victims, I mean residents. |
10-03-2018, 05:48 PM | #11732 |
Scooby Newbie
Member#: 442611
Join Date: Mar 2016
Chapter/Region:
MAIC
Location: Washington DC
Vehicle:2002 WRX |
Putting a 207 into my 02. Trying to choose between a V7, V8, or V9 for it. The stock 205 gave me 215k miles of trouble free driving and racing. Pushing about 230hp finally caused rod knock.
Anyway. I know the 7 has the forged internals. Who doesn't love forged internals? But the V8s twin scroll is appealing (and is a bit cheaper). I don't know much about the V9s. I do track days, Autocross, and Rallycross. So big numbers aren't as important as less lag and larger power bands (and reliability as I don't want to rebuild/replace every few years). I figure 300 to 350hp is as high as I would want to go. Thanks |
10-03-2018, 07:16 PM | #11733 |
Scooby Specialist
Member#: 110078
Join Date: Mar 2006
Location: Long Island N.Y.
Vehicle:02 Bugeye JDM STi OBP BLACK |
The ver 7 has forged pistons, some motors also come with big cylinder head ports. I had a ver 8 and loved the power band and power delivery with the stock vf37. I now have a ver 7 with a vf48, I like it but not more than I liked the ver 8 I had before. I’d go to a ver 9 if I was doing it again, it is a completely revised EJ207 with good improvements.
|
10-03-2018, 08:13 PM | #11734 | |
Scooby Newbie
Member#: 357908
Join Date: May 2013
|
Quote:
The twin scroll is far superior in all manners for your application and goals. Go V8 or 9 from the start, you receive a superior torque curve and power delivery through the entire rev range (look at my build thread which shows Dyno overlays of my VF30 vs VF36). I have also read the cams in V8 - 9 are improved. I love this engine and setup, it is a smooth rev with such a long power band. The 8200 rpm redline makes time feel like it's standing still (well still 5MT here). Not that most here care but because this is my primary family car, it still bags 20mpg in town and 27 on highway driven in a spiritless manner. It is also easier to control the volume with EL headers and proper sound control without giving up spool/power. |
|
10-03-2018, 11:49 PM | #11735 |
Scooby Guru
Member#: 82745
Join Date: Mar 2005
Chapter/Region:
SCIC
Location: So Cal
Vehicle:2005 Subaru STI 2003 EJ207 S204 Wagon |
To tell you the truth, forge pistons isn't a factor (weak link) on the 2.0L. My v9 has been solid at 450whp (600bhp-ish) for about three years with very very spirited driving. The real concern is the cylinder walls cracking/splitting at the top.
Last edited by Fierysun; 10-04-2018 at 12:18 AM. |
10-07-2018, 12:47 PM | #11736 |
Scooby Specialist
Member#: 29292
Join Date: Nov 2002
Chapter/Region:
SCIC
Location: Orange County CA
Vehicle:2004 WRX wagon silver |
I havent really seen many split cylinder walls. I have seen the 25 do that but havent really seen that problem in the 207s
|
10-07-2018, 03:53 PM | #11737 |
Scooby Newbie
Member#: 357908
Join Date: May 2013
|
Is there somewhere I can see the differences between the v7 and v9 intercooler, including weight of the v9.
I picked up a grimmspeed to replace my v7 which seemed to heatsoak at times but this grimmspeed is a pig lead weight.... |
10-08-2018, 02:00 AM | #11738 | |
Scooby Guru
Member#: 82745
Join Date: Mar 2005
Chapter/Region:
SCIC
Location: So Cal
Vehicle:2005 Subaru STI 2003 EJ207 S204 Wagon |
Quote:
The v9 TMIC is larger then the v7's. |
|
10-08-2018, 12:34 PM | #11739 |
Scooby Specialist
Member#: 375462
Join Date: Dec 2013
Chapter/Region:
NWIC
Location: Portland, OR
Vehicle:2006 Impreza WRX STI WR Blue |
|
10-08-2018, 02:32 PM | #11740 |
Scooby Guru
Member#: 15822
Join Date: Feb 2002
Location: TOPOHTO
Vehicle:1999 WRB GM6 2.34 LR destroker |
yep
in fact V7 has the biggest core out of all OEM coolers |
10-08-2018, 03:09 PM | #11741 |
Scooby Specialist
Member#: 29292
Join Date: Nov 2002
Chapter/Region:
SCIC
Location: Orange County CA
Vehicle:2004 WRX wagon silver |
You will be fine, if it hasnt let go yet, it will last. The ej257 has little dimples on the outer walls that they cut to mke room for the head studs
|
10-08-2018, 03:13 PM | #11742 |
Scooby Newbie
Member#: 357908
Join Date: May 2013
|
|
10-08-2018, 03:55 PM | #11743 |
Scooby Guru
Member#: 15822
Join Date: Feb 2002
Location: TOPOHTO
Vehicle:1999 WRB GM6 2.34 LR destroker |
honestly OEM new age STI and OEM EVO intercoolers are one of the best heat exchangers on the market
if you are upgrading to a point where you need a bigger intercooler it already makes sense to go FMIC |
10-08-2018, 04:47 PM | #11744 | |
Scooby Specialist
Member#: 375462
Join Date: Dec 2013
Chapter/Region:
NWIC
Location: Portland, OR
Vehicle:2006 Impreza WRX STI WR Blue |
Quote:
Preemptively buying a new intercooler when you don't need or don't know if you need a better one is one of the biggest wastes of money I can think of on a turbo car. The exception to this is on cars with a severely lacking factory intercooler that is sized precisely to OEM output and cannot handle a lick more. These situations are usually well documented and the factory part is often low-quality (cheap) construction or included as part of a manufacturer stuffing a motor from one car into a different chassis without changing the parts. Another case still is late-80's to early-90's stuff where intercooler technology simply got better near the 2000's. Make your own judgement here, but weigh it against the data you have available. The best intercooler is the one that stabilizes your IAT under ALL operating conditions without being a hair larger/heavier than necessary to do it. From a maintenance perspective too, installing a larger intercooler is not a good way to make your life any easier when it comes time to remove/reinstall it. |
|
10-08-2018, 05:13 PM | #11745 | |
Scooby Newbie
Member#: 357908
Join Date: May 2013
|
Quote:
I haven't found the install process to be any different as I did take the grimmspeed back off at one point to redo a clamp, it just weighs a bit more to lift, it's adjustable mount bolt slides on either side actually simplify fitment over oem. It is possible that better heat shielding would be as or more effective than the core change. There's quite a bit of heat near the IC with the turbo and DP even with oem heat shielding (on the VF36) compared to heat management I've done on other builds. I may swaintech the downpipe (which for the tomioka twin scroll is no heatshielding on the pipe compared to oem) |
|
10-08-2018, 09:06 PM | #11746 | |
Scooby Specialist
Member#: 297799
Join Date: Oct 2011
Chapter/Region:
South East
Location: Knoxville, TN
Vehicle:2003 WRX EJ207 version 8 |
I've done a few of the mods that you are thinking about on my EJ207 w/ a VF37 so I can give you my perspective. I have the Grimmspeed TMIC and from my experience it didn't seem to heatsoak as often at the v8 STi TMIC and the engine seems a bit happier up top too. It does weigh 10lbs more that the v8 TMIC which is a bummer (I'm trying to drop as much weight from the front end as possible). And it's actually not that fun to install. It's big and heavy and it a pretty tight fit. But overall, I'm happy with it.
Also, FWIW, I have done a few front end weight reduction mods as well like the Oswald lightweight bumper beam, relocating the battery and washer tank in the trunk, u-brace delete, various brackets and bolts removed, and a few other things... but for me the GS TMIC is worth the weight penalty. As for heat management, I have a turbo blanket, Perrin downpipe blanket (on stock downpipe with heatshields removed because they rattled) and hood vents. All of those help with heat, especially here in Tennessee where summer seems to never end. I would definitely focus on heat management regardless of what intercooler you choose to run. Obviously, this is all anecdotal so take it FWIW. Quote:
|
|
10-09-2018, 02:00 AM | #11747 |
Scooby Guru
Member#: 15822
Join Date: Feb 2002
Location: TOPOHTO
Vehicle:1999 WRB GM6 2.34 LR destroker |
a bar and plate core will take longer to heatsoak, but it will also take longer to cool down
I found that the OEM IC (v7-9 for my preference) with proper heat management was the best performer for cars under 400-450hp. We pulled 505 crank hp on V8 IC once with a garrett35, but it was the limiting factor and car was on edge of knock heat soak is inevitable on a boxer engine with intake manifold sitting on top of the engine, WI is the only real solution that helps, or very custom venting and ducting like done on race cars |
10-09-2018, 03:24 PM | #11748 | |
Scooby Specialist
Member#: 375462
Join Date: Dec 2013
Chapter/Region:
NWIC
Location: Portland, OR
Vehicle:2006 Impreza WRX STI WR Blue |
Quote:
|
|
10-09-2018, 05:00 PM | #11749 |
Scooby Guru
Member#: 15822
Join Date: Feb 2002
Location: TOPOHTO
Vehicle:1999 WRB GM6 2.34 LR destroker |
real world tuning/logging
it for more for experiment sake as we were curious to see how much power we can get away with on the stock IC, car was sold shortly after and upgraded to FMIC also I haven't noticed any improvement going from V9 IC to the huge ETS GR IC running blouch 1.5xtr which is basically a small GT30 turbo, so I consider TMIC upgrades over JDM units a total waste of money, and I agree when going over GT30 sized turbo you should simply get a proper FMIC setup with proper piping and tuning, there is NO loss of power(band), unlike many state, and lag is overrated |
10-09-2018, 07:43 PM | #11750 | |
Scooby Specialist
Member#: 375462
Join Date: Dec 2013
Chapter/Region:
NWIC
Location: Portland, OR
Vehicle:2006 Impreza WRX STI WR Blue |
Quote:
I think the benefit of the OEM style is having the throttle response given the large reservoir right in front of the throttle. Turbo lag is negligible but the throttle lag does exist with a FMIC. You can tune around it with a little more spark, etc. but it *DOES* need to be considered when you tune the tip-in. EDIT: Hyper - are you logging pre-throttle boost in that photo? That's a great place to do it that I hadn't considered, but for anti-lag tuning, I've been brainstorming where I want to stick the tap. What I *really* wouldn't mind having is a restrictor with something like this built-in so I could measure PR and hold it around 1.8. Last edited by mrsaturn7085; 10-09-2018 at 08:05 PM. |
|
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
ej207 owner wants opinions | adbramsay | Factory 2.0L Turbo Powertrain (EJ Series Factory 2.0L Turbo) | 2 | 02-26-2011 07:29 PM |
Ej207 V6 | AndrewFD3 | Factory 2.0L Turbo Powertrain (EJ Series Factory 2.0L Turbo) | 10 | 06-03-2010 04:53 PM |
JDM Sti EJ207 V9 crank 75mm or billet crank (K1, Manley) VENDORS ??? | L'frise | Private 'Wanted' Classifieds | 7 | 06-03-2010 09:24 AM |
08 ej207 JDM dual AVCS heads on a built v7 ej207 | icev7 | Built Motor Discussion | 17 | 02-21-2010 03:21 PM |
Ver 8 EJ207 Owners Check In | spoolinsuby | Factory 2.0L Turbo Powertrain (EJ Series Factory 2.0L Turbo) | 21 | 10-17-2005 01:56 AM |