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Old 11-04-2010, 11:02 PM   #1151
smokeynyc
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97 V7 207'd GC
04 JBP WRX

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Just got my V7 in today, I'm wondering if you guys got any suggestions for spark plugs? I wanna swap em out before the motor goes in.
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Old 11-04-2010, 11:57 PM   #1152
scoobystas
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Version 8-Vf37

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pull the plugs and ID them...most likely the NKG R plugs, same ones as usdm wrx. Check the plugs and if they look ok. you can follow this guys advice on reading plugs, i personally did plugs once on my ej205 and didn't really care to inspect them at the time...probably should have.

http://www.4secondsflat.com/Spark_plug_reading.html
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Old 11-05-2010, 12:07 AM   #1153
scoobystas
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hmm...found these, not exactly sure who manufactures these but they are expensive due to STi stamping their logo on the package
http://store.ncrally.com/catalog/pro...1741f422d607b3
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Old 11-05-2010, 12:16 AM   #1154
fastnoypi
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MY01 EJ207 HTA35r
nothing to see, i'm stock

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i use NGK BKR7EIX plugs, my v7 came with Denso IK22's.
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Old 11-05-2010, 12:55 AM   #1155
LIQUIDSK8S
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Anybody go with 1 step colder than the plugs that came with the motor? Any specific ones recommended for 350whp+?
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Old 11-05-2010, 04:28 AM   #1156
Tidgy
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Quote:
Originally Posted by Clark Turner View Post
This person is confused.


C

how so?
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Old 11-05-2010, 04:45 AM   #1157
banny sti
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Anyone who says Pat is confused, needs their own head looking at

Here is what Pat achieved in about 40mins of mapping on a proper speed density ecu Syvecs FTW baby

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Old 11-05-2010, 05:14 AM   #1158
Jolly Green Monster
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Quote:
Originally Posted by Clark Turner View Post
Incorrect. You can set the boost cut to well over 30 psi.

C
Sometimes it is good to think outside the box.. perhaps you could try testing what you are suggesting?

you can put a number in the boost cut at almost what ever you want but the map sensor will max out and show a lower value and therefore you have NO boost cut what so ever.

Simon
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Old 11-05-2010, 05:45 AM   #1159
Krang
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ej207 v8 vf37

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^
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Old 11-05-2010, 12:42 PM   #1160
04ImprezaWRX
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Quote:
Originally Posted by dug-e-fresh View Post
You can listen for where the air is leaking by putting an ear to the intake vs the exhaust manifold or oil filler neck.

Depending where the leak is coming from will determine how far you gotta tear it down which will determine how much its gonna cost to fix it. At minimum your looking at bent valves, so "just" a s head rebuild... at worst your looking at a trashed bottom end (fried rings at best, cracked ringlands at worst), so you'd be looking at a complete overhaul.

def
Sent you a pm about this dug-e thanks for the help
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Old 11-05-2010, 10:37 PM   #1161
pat
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It's important to realise that the cars and ROM files Clark and I see are not necessarily the same, nor are the same results necessarily achievable.

I gave a reasonably detailed description of the problems as they apply to the majority of UK vehicles, since that was on a UK forum. This means there are a lot of MY99/00 cars (dating back to a time when the US didn't have Impreza Turbo models), a large number of EUDM MY01-05 cars both WRX and STI all non-DBW, and a few MY06-07 EUDM DBW cars. There are very few MY08-10 cars. Even when there were "direct equivalents" they weren't necessarily comparable...

The types of ROM file that are common here won't be in the US, and vice versa. Take, for example, the 300g/sec limit. It's there in an EUDM MY02 file whether you're using Flash2002 or ECUFlash, that's just the way it is scaled. You can find that scaling as "Airflow(g/s)1" in 16BITBASE if you're interested. In contrast, if we take an MY06 JDM STI file, that uses "Airflow(g/s)" and it pegs at 400g/sec. Also the DBW ROMs are a lot friendlier with the MAF scaling... since the US has had those somewhat longer than the UK, it means that more of the cars just don't have the limit. Moreover I didn't say it was impossible to work round it, I actually detailed HOW you can work round WITHOUT patching the ROM. Patching the ROM may be a more elegant solution but that's not really a viable option here...

I'll try not to open Pandora's Box when I say that, from a mapper's perspective, it is a choice of ECUTEK or open source but not both. Given the number of cars present here that cannot be mapped using open source, it's somewhere between a no-brainer and a "no-choice"-er for professional mappers. There MAY be solutions available via open source tools that I just can't use, but on the flip side of that, there are ECUs I can map that the open source tools can't.... in a perfect world one could pick and choose, but the world we live in is far from perfect. There are a lot of cool new things on the horizon from ECUTEK which will definitely address some of the gotchas but they're not here, not right now.

Ultimately, the ECU is just a piece of hardware. It doesn't know or care what 1g/sec is, what 100 degrees C is, what 1.8 bar is. These are simply representations of real world quantities and they can be represented in many ways within the control code of the ECU. Just how the original designer of the ECU firmware chose to do it will affect how much re-calibration you can do before you not only have to change the calibration data, but also the control code. If you are prepared to re-code then limits become meaningless, as do features, protocol definitions, I/O assignments... if you went back to bare metal then you could do whatever you wanted (within the hardware capabilities). In a similar vein you could say that your Windows 7 computer IS capable of running compiz, all you have to do is reformat the hard drive and install a Linux distro. If you want to be pedantic then yes, software limits can be extended....

Hardware limits are something else. If a sensor simply cannot register more than X, even if you set the limit in the software to X+Y, you will never see more than X and by definition, you will never reach the limit, regardless of what is happening in the real world. The only solution to this type of a problem is in the real world. The sensor needs to be made capable of measuring X+Y. Just how that is achieved will be somewhat dependant on the sensor. How you go about verifying that the limit really does kick in at X+Y can be anywhere on a long scale between fun / entertaining and downright dangerous.

Cheers,

Pat.
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Old 11-16-2010, 03:01 AM   #1162
Krang
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ej207 v8 vf37

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Figured some peeps in here could use this information. I have compiled methods/companies that produce solutions to twinscroll downpipes for stock location turbos here: http://forums.nasioc.com/forums/show...5#post32472175
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Old 11-24-2010, 02:14 PM   #1163
04ImprezaWRX
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Just picked up my V7 EJ207. Got a good deal on it. The two front cylinders closest to the front bumper wouldnt hold any pressure on the leak down test. All the air is coming out the intake manifold. Im going to be rebuilding it shooting for like 350-400 on e85 with a rotated 30r. Doe anybody have reccomendations for 1 step colder plugs, fuel injectors. Does the 207 take sti coilpacks or wrx? Thanks guys
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Old 11-24-2010, 07:19 PM   #1164
lil'redwagon
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Dom 3 XT-R, 400WHP

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someone else can offer a more solid answer, but on my version 8, i'm running ngk wrx 1 step colder plugs, deatschworks 850 cc injectors, and i was told that both coilpacks work. this is where i'm a little fuzzy - i vaguely remember someone stating that wrx and sti coilpacks are different, but they don't perform differently. something like that. so in other words, if you're changing them, you can use either, but they should all be the same kind.
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Old 11-24-2010, 08:28 PM   #1165
dug-e-fresh
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Location: 603 whp / EJ207
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10.7 @ 136, '02 WRX
??.? @ ???, '09 spec.B

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Quote:
Originally Posted by 04ImprezaWRX View Post
Just picked up my V7 EJ207. Got a good deal on it. The two front cylinders closest to the front bumper wouldnt hold any pressure on the leak down test. All the air is coming out the intake manifold. Im going to be rebuilding it shooting for like 350-400 on e85 with a rotated 30r. Doe anybody have reccomendations for 1 step colder plugs, fuel injectors. Does the 207 take sti coilpacks or wrx? Thanks guys
With E85 I'd stick with stock plugs.

For that kind of power, just mod the stock injectors... either the light blues or the pinks will flow 750-850cc's modded... will support power well and above what you plan and idle like stock.

The 207 and 205 accept the same type of coilpacks... completely interchangeable. So whether there is a diffwerence or not... you can run either with plenty of spark for much higher hp goals.

Sounds like you have some bent intake valves. Makes sense as they are typically abit bigger than the exhaust valves with abit more lift.

Make sure the valve guides aren't torn up... their not cheap though, but don't skimp... 20 bucks a pop (and theres 16 total).

def
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Old 11-29-2010, 06:59 PM   #1166
04ImprezaWRX
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Hey guys im looking for a V7 EJ207 ecu, if anyone has one for sale or see's one for sale please let me know. I cant find one anywhere!!
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Old 11-30-2010, 11:08 AM   #1167
i_got_turbo_do_you
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subscribed!
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Old 12-01-2010, 05:06 PM   #1168
bugeye1257
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hey guys i have a v7 ej207. does anybody know the stock piston size?? is it same as the usdm 2.0?
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Old 12-01-2010, 06:17 PM   #1169
Big_DeWeY
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Quote:
Originally Posted by bugeye1257 View Post
hey guys i have a v7 ej207. does anybody know the stock piston size?? is it same as the usdm 2.0?
yes..
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Old 12-21-2010, 02:01 PM   #1170
04ImprezaWRX
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Can someone verify this is an actual V7 EJ207 ecu. Im kind of confused by the 6A. The numbers on the ecu read 22611AH581, 112200-5122, 12V.

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Old 12-21-2010, 02:04 PM   #1171
subydude
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Quote:
Originally Posted by 04ImprezaWRX View Post
Can someone verify this is an actual V7 EJ207 ecu. Im kind of confused by the 6A. The numbers on the ecu read 22611AH581, 112200-5122, 12V.
I bolded the important part of the string. From memory that's actually the V8 ECU. The V7's were AH480, AH481, AH970, AH971 while the V8's started on AH580, AH581. There's a thread with decoder ring in the title floating around somewhere that actually has the ECU codes for all the different year JDM STi's.
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Old 12-21-2010, 02:14 PM   #1172
Mohammadov
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AH581 is 2003 JDM ECU.
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Old 12-21-2010, 03:05 PM   #1173
04ImprezaWRX
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Thanks guys, I was hoping it was a v7 the only other one i could find is AH190 but thats a v8? Im trying to find that decoder ring thread.
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Old 12-21-2010, 05:23 PM   #1174
Mohammadov
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i have V7 engine with V8 ecu..nothing wrong at all!
heres the list of the ECU IDs:
http://www.rspmotorsports.com/subaru.html

Last edited by Mohammadov; 12-21-2010 at 05:28 PM.
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Old 12-21-2010, 06:58 PM   #1175
Clark Turner
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Yep. Ah581 is jdm. Who knows what's inside though
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