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Old 11-08-2008, 11:06 PM   #1
JDMFLCL
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Default link ecu vs powerfc vs E-ultimate vs megasquirt vs z4 (ej20g)

So at first i thought my only option was the pfc, but it appears other options have come up. I have the td05-16g ej20g. Here are the mod's i would be tuning for.

-snorkel deleted intake
-TBE
-v2 sti tmic
-740cc injectors (either modded stock or new ones)
-walbro

aiming for 300-330 whp, no more honestly (saving up for my other project)

which would you guys suggest. do the others even work? i've heard the Z4 can automatically change the ignition timing if boost is raised to a point that is still within the stock injectors capacity. If i can hit even close to 300 crank, i may just do that and stay with the z4.

im currently at the stock 12 something psi, but ive heard i can raise to almost 15psi and everything would work fine.
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Old 11-09-2008, 08:08 AM   #2
RA Limited
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if you're going with 740cc inj, you'll need something besides a stock ECU (Z4).

The emanage is garbage.
Megasquirt is pretty capable from what i've seen.
PFC is plug and play which is awesome, and seems to be pretty straightforward.
I know nothing about Link, other than isn't it really expensive... and supposed to be awsome?
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Old 11-09-2008, 08:10 AM   #3
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i know that pfc is prob IT, but ive seen a ej20k done with megasquirt...what is it? i mean its cheap and it looks very expandable

also what is this datalogit for PFC
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Old 11-09-2008, 01:11 PM   #4
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i sent you a PM but here is my $0.02.

i know a lot of people here like the Power FC, but thats because that has been the only EM for early EJ20's for a long time. but it is 15-20 year old hardware and just almost as old of software. it is limited to 16X16 fuel and ign maps.

i just got the Vi-PEC plug in board for my EJ20G. cost $1600. its a little more than the PFC with a datalogit. PFC ~$1000 datalogit $300.

but i got the board, pluged it in cal the TPS check the input from the crank and cam sensors. crank the engine and vroom it started right up. did a little tuneing on it, but not much due to time and also i had a bad boost controler.

i have been driving it for 150 miles (a week) and i have had zero problems. it dose an awesome cold start with the stock IAC. both when below 30*F and in the afternoon when its 50*F. the ECU is smart enough to learn from the input from the O2 sensor, and has a quicktune feature that uses a wideband O2.

i could go on but i will post more after my tuneing session early this week. i will also will have dyno graphs for proof.

in a nut shell. dont buy a 15 year old computer when Link and Vi-PEC just releaced a brand new top of the line product for just a few dollars more.

-=Suberdave=-
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Old 11-09-2008, 02:26 PM   #5
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hmmm

hows that comparing to an autronic?

oh, OP: about that board posted above me. look at the dealers/tuners for USA on the site. Harvey is on there. that could be a good option for you
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Old 11-09-2008, 02:37 PM   #6
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the autronic the link and the Vi-PEC are all real close to the same. they use the same hardware but a little different software from what i have seen.

i have not done a lot of research on the Autronic, didnt seam like there was much information on the net about it.

i was trying to choose between the Link G4 and the Vi-PEC. the tuner that i use sales the Vi-PEC and tech support is awesome.

to each his own. but do lots of research before you buy. more companies are starting to make ECU's for the older WRX's since many people are running them in swaped cars.

-=Suberdave=-
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Old 11-09-2008, 03:44 PM   #7
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how is the vi-pec logging /wide band integration

i paid 600 for my (414AF002) ej20k power fc (w/o commander) & $315 shipped for datalogit (rx7.com)
i have been working on my low load fueling it has been an easy integration with my lm-1 and the datalogit



an interesting thing about the older ej20 pfc (414AF001,414AF002) they won't work with the fc commander software, only datalogit .. and you can't reset the base fuel map

all the fuel cells start at 14.7 .. if you have to make more than a 1.5% correction you have to adjust the maf scalier



in hind site i wish i had the 414AF005 for my ej20k

Last edited by Jaxx; 11-09-2008 at 03:58 PM.
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Old 11-09-2008, 04:07 PM   #8
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where is a dealer for link ecu
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Old 11-09-2008, 05:31 PM   #9
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i dont know if any of you remember the link days when all the GC guys were turboing the 2.5's, but i remember people having a tough time.

do you know who im talking about when i say harvey?
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Old 11-09-2008, 07:35 PM   #10
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I'm running the Link G3 Plus in my '04 STi (35R, sleeved, CP pistions, non-avcs cams, Ford Mustang throttle body, etc.,). The guy that installed the system built a custom harness (lots of labor). Link does make a plug and play for the EJ20G but the price was around $4k for the ECU and plug-n-play adapter. Given the price of the Link and the fact my swap is very budget limited I went with the Pfc, but have yet to install or use it. If you're interested in the Link, contact Simon at Link USA.

Last edited by beaviscih; 11-13-2008 at 09:19 PM.
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Old 11-09-2008, 07:48 PM   #11
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that ViPEC looks like a DAMN good option for you guys in the states. If i wasn't here in Okinawa i would probably go with that. I was able to get my PFC and Commander for about $500, so i have no desire to spend more at this point.

In the future though, if i get another GC8, i'll possibly look into ViPEC.
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Old 11-09-2008, 09:08 PM   #12
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Quote:
Originally Posted by beaviscih View Post
I'm running the Link G3 in my '04 STi (35R, sleeved, CP pistions, non-avcs cams, Ford Mustang throttle body, etc.,). The guy that installed the system built a custom harness (lots of labor). Link does make a plug and play for the EJ20G but the price was around $4k for the ECU and plug-n-play adapter. Given the price of the Link and the fact my swap is very budget limited I went with the Pfc, but have yet to install or use it. If you're interested in the Link, contact Simon at Link USA.
that sounds about 2500-2800 more than i was quoted for the g4+adaptalink
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Old 11-10-2008, 01:06 AM   #13
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Quote:
Originally Posted by Jaxx View Post
that sounds about 2500-2800 more than i was quoted for the g4+adaptalink
the link G4 is a plug in play bord. dose not requier a adapter, the G3 did.

i was quoted $1120.00 from Link, a few weeks ago there was a thread that had a price of $1000, but that may have been a group buy.

the link G4 and the Vi-PEC are apples to oranges to the G3...

-=Suberdave=-
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Old 11-10-2008, 05:37 AM   #14
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thanks for all the help, ive decided to finish my suspension then do injectors, tune, ecu management all at once
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Old 11-12-2008, 10:11 PM   #15
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Quote:
Originally Posted by Jaxx View Post
that sounds about 2500-2800 more than i was quoted for the g4+adaptalink
I thought it sounded ridiculously high, but that is the number Miles @FLI quoted (or pretty close to it).
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Old 11-13-2008, 07:21 AM   #16
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im just curious in hindsight, why do piggybacks like SAFC's and e manage not work with the ej20s, is there a particular reason?
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Old 11-13-2008, 11:10 AM   #17
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Couple of comments not related to engine management...

For 300-330 WHP 1) I don't think you need 740cc injectors and 2) I DO think you need more than a v2 STi top mount.

It will work fine but heatsoak will be your enemy unless you use waterspray reguarly.

-Mike.
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Old 11-13-2008, 06:36 PM   #18
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im going to install a meth/water injection system

ive decided to go with a larger forester xt tmic
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Old 11-13-2008, 08:18 PM   #19
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Quote:
Originally Posted by Hurley 2.5 WRS View Post
i dont know if any of you remember the link days when all the GC guys were turboing the 2.5's, but i remember people having a tough time.

do you know who im talking about when i say harvey?
You must really have a hard on for this Harvey guy. Oh wait, I know who he is, though he's a little creepy.

The Link was terrible resolution. The LinkPlus was significantly better and to this day Xephyr still uses one on his 400whp RS.
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Old 11-13-2008, 09:09 PM   #20
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Just thought I would add that I'm using the Emanage Ultimate and making 240wtq on my VF28. I'm piggy backing my 97 2.5 N/A ecu, but the car runs like stock and works really well. They were designed for a lot of cars including the JDM EJ20G wrx's.

They are easy to setup because they have the EJ20G engine codes on a drop down menu. Select which one and it sets all the settings for you. I had a harder time because my engine wasn't listed on the menu so I had to figure out all the settings manually.

I just wouldn't rule it out, because for the price it is a good option. It has direct control of the injectors and the ignitor for timing. Also has auto tune off your wideband, and a really nice Data logger with slow motion play back and can monitor 12 different things at once, even the knock sensor.

Just a thought
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Old 11-14-2008, 03:45 AM   #21
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Quote:
Originally Posted by Matt Monson View Post
You must really have a hard on for this Harvey guy. Oh wait, I know who he is, though he's a little creepy.

The Link was terrible resolution. The LinkPlus was significantly better and to this day Xephyr still uses one on his 400whp RS.
haha

i stopped looking at links way back then, when i decided against turboing the rs after a tranny swap (you know how the rest goes...)

oh, and what i meant about harvey, hes listed as a distributor for that board. probably tunes em too
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Old 11-14-2008, 01:02 PM   #22
JDMFLCL
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wait so e manage ultimate works?!?!?!?!?!

that would be very superior for my fairly tame build
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Old 11-14-2008, 01:59 PM   #23
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it was tame until you almost doubled the injectors 440-720

the problem with piggy back is when you adjust the maf readings for the fuel it also adjusts the timing
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Old 11-14-2008, 06:25 PM   #24
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i think im going to go with the chipped z4 in a stunning reversal and then eventually just get a PFC/link down the road
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Old 11-14-2008, 07:37 PM   #25
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whatever you do, watch out for medical mechanica?

or whatever
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