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Old 03-17-2009, 12:30 PM   #1
Rei_Akira
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Default V4 stand alone or open source tune?

ok, so due to some of the mods on the swap im doing i'll be needing either an open source tune (which i understand isn't available here in the states?), or a full stand alone system, which will probably be difficult to find as the V4 sti wasn't available here....

i know other people have done this swap, what are you doing as far as tuning? am i going to be stuck trying to find a stand alone system from japan?
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Old 03-17-2009, 03:56 PM   #2
Jaxx
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power fc+datalogit+lc-1

the powerfc can be found on ebay for ~800 (or less with out a commander)
and datalogit is 316 shipped from rx7.com
lc-1 is $149 (lm-1 or lm-2 will also work)

there are 2 versions of the power fc for the ej20k 414-f002 and 414-f005, you want 414-f005.


or the vipec/link has a plug n play version too

i highly recommend getting it running with the standard ecu first, flush all the bugs then add em

where are you in idaho?


open source for the ej20k ecu does not exist only 2002 and newer

Last edited by Jaxx; 03-17-2009 at 04:11 PM.
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Old 03-17-2009, 04:06 PM   #3
Rei_Akira
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north idaho, near cour D'alene (or however its spelled, damn french names, why cant they be spanish like in so cal =_=)

i'm going to attempt to get it running with the standard ecu, but i was talkin to Armin at W1 and i might have trouble as my front cut didnt come with the factory airbox (not sure is a USDM one will work), and factory recirc bov.

i'm probably going to run an atmospheric bov since i have two in the shop sitting there (HKS and Apexi, ill prob run HKS though on this car, had Apexi on my nissan), and i was going to fab an open air filter adapter.....so i'll be needing a tune.
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Old 03-17-2009, 08:06 PM   #4
suberdave
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i would take a long hard look at the ViPEC ECU. they are awesome.
http://www.vi-pec.com
i have one for my Ver2 EJ20G, i can do anything i want with the tuneing and it is all done on a laptop or desktop PC.

when i pluged it in the car started right up with no troubles. then i had it dyno tuned at Drift Office in Auburn WA. they did an awesome job, put down 285 AWHP and 265 AWTQ.

it is well worth the money and the tech support is awesome as well...

-=Suberdave=-
www.suberdave.com
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Old 03-17-2009, 09:38 PM   #5
Rei_Akira
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very nice, thanks a lot mate. i'll look into it right now. car won't be up for a long time, but i might as well start gettin all the pieces for it....
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Old 03-17-2009, 11:34 PM   #6
Jaxx
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there are only 2 maf-type air boxes and one of them will fit the ej20k maf
you should be able to find one in the local yard or spauldings (spocompton) will definitely have several to choose from

i might have one too my garage is a terrible terrible mess
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Old 03-26-2009, 10:40 PM   #7
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Quote:
Originally Posted by suberdave View Post
i would take a long hard look at the ViPEC ECU. they are awesome.
http://www.vi-pec.com
i have one for my Ver2 EJ20G, i can do anything i want with the tuneing and it is all done on a laptop or desktop PC.

when i pluged it in the car started right up with no troubles. then i had it dyno tuned at Drift Office in Auburn WA. they did an awesome job, put down 285 AWHP and 265 AWTQ.

it is well worth the money and the tech support is awesome as well...

-=Suberdave=-
www.suberdave.com
this sounds very promising as a newer EM to replace the 20k PowerFC
PMed for more info
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Old 04-20-2009, 10:03 AM   #8
Nemesis_911
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Quote:
Originally Posted by Jaxx View Post
power fc+datalogit+lc-1

the powerfc can be found on ebay for ~800 (or less with out a commander)
and datalogit is 316 shipped from rx7.com
lc-1 is $149 (lm-1 or lm-2 will also work)

there are 2 versions of the power fc for the ej20k 414-f002 and 414-f005, you want 414-f005.


or the vipec/link has a plug n play version too

i highly recommend getting it running with the standard ecu first, flush all the bugs then add em

where are you in idaho?


open source for the ej20k ecu does not exist only 2002 and newer
Jaxx,
I'm trying to find out what the difference between these two systems is. Right now I'm trying to get a Power FC out of Japan for my EJ20K but the one that the guy found has serial code starting with GC8D. From research I have seen that this corresponds to the 414-F002 and the GC8DL corresponds to the 414-F005, please correct me if I'm wrong. I noticed you said the one to get would be the 414-F005, however I don't know much of the differences between them and any advice would be greatly appreciated!
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Old 04-20-2009, 12:10 PM   #9
Rei_Akira
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Quote:
Originally Posted by Jaxx View Post
there are only 2 maf-type air boxes and one of them will fit the ej20k maf
you should be able to find one in the local yard or spauldings (spocompton) will definitely have several to choose from

i might have one too my garage is a terrible terrible mess

know which box it is by chance? i grabbed one but it doesnt work (not big enough mounting area). im thinking about just fabbing a metal box in the stock location and runnin a open filter there....well, the box would be more like a heat shield that separates the filter from everything else...
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Old 04-20-2009, 05:16 PM   #10
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I am running a Hydra, they have a plug and play harness. I am not so sure I recommend it though as I have had a few issues like the first one died and I have a hard starting issue.
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Old 04-21-2009, 09:32 AM   #11
Jaxx
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the difference is in the map layout
my understanding is the later models have a base map and an adjustment map .. the older models have just an adjustment map- which affect how you auto tune
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Old 04-21-2009, 12:20 PM   #12
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ya, i heard the Hydra's were problematic and hard to tune, i think im gonna stay away from it, im seriously looking into the Link G4 system though, it looks very nice....
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Old 04-21-2009, 12:47 PM   #13
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Quote:
Originally Posted by Rei_Akira View Post
ya, i heard the Hydra's were problematic and hard to tune, i think im gonna stay away from it, im seriously looking into the Link G4 system though, it looks very nice....
My G4 EJ20G plugin arrived today and with some luck Ill have the car cranked up this weekend and should be able to post some details, datalogs, etc.
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Old 04-21-2009, 02:47 PM   #14
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very nice, what options did you pick up with it? (wide band sensor ect.) and how much did you end up paying for the whole thing if you dont mind me asking.
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Old 04-21-2009, 07:53 PM   #15
beaviscih
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Quote:
Originally Posted by Rei_Akira View Post
very nice, what options did you pick up with it? (wide band sensor ect.) and how much did you end up paying for the whole thing if you dont mind me asking.
I'm using the LC-1 WB (which is the recommended WB by Link), Link Temp Sensor, Link 2.5bar Map sensor (had it from my Link G3+ on my STi, which is now running a GM Map sensor) and the Link EBC. While you can use the stock Map sensor, BC, etc., it makes it a little easier for novice engine management folks like myself. Link has a pick list of sensors, injectors, etc. in their software via pull down windows. Using the Link stuff just minimizes the chances I'd screw up something. The EBC and Temp sensors were around $100 each, I had the Map Sensor and the EM system is around $1500.
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Old 05-03-2009, 07:15 PM   #16
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Does anybody know the difference between the GC8D and GC8DL power FC Models. I've googled this and asked all over and it seems like nobody knows.
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Old 05-03-2009, 09:12 PM   #17
Jaxx
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i believe it has more maps
base map + adjustment map

where the older just has a adjustment map
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Old 05-04-2009, 10:23 AM   #18
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I think they all come with base maps. But I figure there may be some difference and it's driving me nuts trying to figure out what it is. I called APEXi USA and they said that the F002 was a discontinued Pro model. I spoke to a guy in japan that said it is just the D-Jetro model. I really dunno what to go on as I've already passed up 2 units that are GC8D that would make them F002 i think.
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Old 05-04-2009, 11:40 AM   #19
Rei_Akira
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i'd think Apexi Japan would know more than the guys here in the USA, if for no other reason than they actually had the application there...
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Old 05-04-2009, 01:19 PM   #20
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Quote:
Originally Posted by Rei_Akira View Post
i'd think Apexi Japan would know more than the guys here in the USA, if for no other reason than they actually had the application there...
I figured that... but I dread calling them and getting somebody that only speaks Japanese... will give it a try though.
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Old 05-04-2009, 03:10 PM   #21
Rei_Akira
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try e-mailing them. ive delt with JUN in japan and they reply in english, may take a few days though.
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