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Old 01-23-2002, 01:51 PM   #1
AMR MOD
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Default LINK2 Available for aftermarket turbo kits

For those looking for standalone management, check out the LINK2 system. Uses all factory sensors, built in 2 bar map sensor(gets rid op maf sensor), built in boost control , luanch and antilag control and more. Check it out at www.carmodifications.com
inquiries@carmodifications.com
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Old 01-26-2002, 09:36 PM   #2
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Hey,

I emailed these guys, and this is what I got. Pretty cool! Anybody have any information about this set up and if it will work?


Yes I have a LINK2 in stock configured for Impreza 2.5RS. Perfect for turbo since it comes with a built in 2 bar map sensor. It uses all factory sensors except the MAF sensor, since it bypasses that with the map sensor. Depending on the year of the car, I have plug and play and wire in. It is meant as a complete replacement not parallel like the tec II. Check out the info on my website! If you have further questions, give me a call at 650-255-6015.
Regards,

Andrew
www.carmodifications.com
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Old 01-27-2002, 06:09 AM   #3
8Complex

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Uh... so how about some information on the unit for those of us who need more info then "it works and does what you want it to"?

Programmed in 500 RPM increments? What units is it programmed in? Will it be easy for the end-user to tune? Maybe a screenshot or two, please? How does the MAP sensor connect to the motor? Don't tell me you run a tube all the way from the engine bay...

Anything else? Pics of it installed and a list of what cars you have PnP harnesses for?
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Old 01-27-2002, 08:58 AM   #4
Happy
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Just had a look at the Link 2 infowww.link-electro.co.nz This is far more informative, and you can download a copy of the map "format". Pretty much the same as the plug in link.

Now, I used a Link plug in for over 2 years, and as far as VFM goes, IMO, there is NOTHING to beat it.

Some of the info posted is a little misleading (Link site too) in as far as how many of the fuel/ignition zones will "actually" be used by most people.

There are 200 fuel/ign zones, but when you work out how many you will be using, it's more like 120.

The rpm zones go up to 10,000rpm, in 500rpm increments = 20 columns, and the pressure rows go up to 2bar (29psi/300kpa) in 30kpa/.3bar/4.35psi increments = 10 rows, 20 x 10 ='s the 200 zones.

But: as most guys will be running a max of 7500rpm = 15, and boost to about 15psi/1 bar = 7 rows, 105 zones are a more likely map. HALF of the zones available.

You CAN'T re configure the map to suit. REAL shame.

The Link does do away with the AFM, in favour of MAP v RPM, but I couldn't find where it says it has a built in map sensor, and suspect I've either missed it, or you would need to supply this yourselves.

We NEVER use the "auto tune" feature, finding it somewhat lacking (read, waste of time) and mapping in "30 min's" is optomistic to say the least (read, YOU MUST BE JOKING).

Now, all that said, the Link is still a VERY GOOD product, and I would recommend it to anyone, who's looking for a stand alone, for mapping a relatively modified car. NOT for a "highly" tuned car.

It lacks granularity, and flexability, but I would still pick it over a Unichip, any day of the week.

Happy.
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Old 01-27-2002, 11:12 AM   #5
Jon Bogert
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Quote:
4.35psi increments
So turbo RSs will use one, or at most two zones. Hmmm, that doesn't sound very accurate.

Also, it's good to know my MAF sensor will be replaced with a MAP sensor. Now if you could just point out my MAF sensor...
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Old 01-27-2002, 02:43 PM   #6
skywalker
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I am sort of confused as to how you got 4.35psi increments? Wouldn't it be 2.9psi increments? Just trying to clearify my very basic knowledge of this unit.
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Old 01-27-2002, 04:03 PM   #7
Graham
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Is there a plug and play version of this unit coming our for the RS?


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Old 01-27-2002, 05:03 PM   #8
Happy
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30kpa is as near as damn it .3bar.

1 bar = 14.5 psi.

.3 x 14.5 = 4.35.

You would use more than 2 zones

Maybe it would help you to look at the map.......

Maybe you car doesn't run in vacumm..........

Maybe you don't realise 1bar absolute = atmospheric pressure, which = 0 psi

2bar absolute = 14.5psi

A 3 bar map sensor doesn't mean it can run 3bar positive pressure, it means it's calibrated to - 1bar~ + 2bar positive.

Don't assume that because the increments are .3bar/4.35psi, this is a problem, it ISN'T. This is where the "interpolation" software comes in.

The Motec, Pectel, and other ECU's in the same class, work in a similar way, and still rely on the interpolation software.

The Pectel allows you to run a max of 400 zones, but you can configure them, so that my map for example has 19 rpm columns, to 8250rpm, and 21 pressure rows, to 2.15bar "positive"/31.175psi, giving me 399 mappable zones. The closest I could get to the 400.

So I had to divide 2.15bar/31psi, into 21 rows. This gave me .15bar/2.175psi. This is MORE than adequate.

The Link retails at about $1000,
The Pectel T6 retails at $3300

Work it out !!! But I'd still take a Link over a Unichip, ANYDAY.

Happy.
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Old 01-27-2002, 05:23 PM   #9
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Guys,

Sorry, I should have explained in the first post, the way pressure is used in mapping. It's been a long day.....

But if you follow the link (no pun intended) and look at the "map" format, it's a lot clearer.

Graham:

Do you mean a N/A version ? I would doubt it. I'm not at all familiar with the RS's, or their ecu's. It may be worth comparing the pin outs from the RS ecu, and those of the equivilent turbo ecu (model year) and also the ecu's connectors. It may be possible to use the Link, and just ignore the boost controls. Long shot.

Happy.
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Old 01-27-2002, 05:47 PM   #10
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Happy - Why is the common figure for 1 bar = 14.7psi? Is it just a common mistake that has spread, or is there a different conversion used in the automotive industry or something?

I looked it up and found 1, 2, 3 sources that said it was 14.5psi, then I turned to my trusty Machinery's Handbook to find it said the same thing... 1bar = 14.50377psi.

Argh... brain hurts...
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Old 01-27-2002, 07:02 PM   #11
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8C, Trust you

There have been so may arguements over this. Confused me too, given the amount of scuba diving I've done....

To be honest, I can't remember but 14.5 is the recognised industry standard.

All the different calibrations drive me mad. It's hard enough getting into someone elses car, to map an ecu, and get used to gauges being in all sorts of positions, then you find some boost gauges in bar, psi, kg, milibar, and even combinations !!!! vacuum one scale, boost another

I'll try and dig out the 14.5 v 14.7 explanation. I'm sure Shiv will know this one.

Happy.
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Old 01-27-2002, 07:52 PM   #12
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Link2 has a builtin map sensor that unfortunately, you will have to run it through your fire wall to a Boost source(intake manifold) As for Plug-in Harness, we will have it for the 2002 Impreza WRX and RS/TS since they use the conventional OBD2 harnesses. We have not found any plugs for the older Rs yet. STill working on it. Yes you will not be using the whole map, since most of the Subarus will not see beyond 7500 unless you got some type of engine rebuild so you will not be able to use all 200 zones. I will find out with Link if there is someway to reconfigure RPM points for a finer resolution for those that do not need to rev to 10,000 rpm. Attached is a copy of what the tuneable map will be.

AMR
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Old 01-27-2002, 07:55 PM   #13
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Hey Happy, you make a good point about the interpolation software, but that still doesn't help with the fact that running a 6psi boost system, the link will only uses 2 of a possible 6 rows for making adjustments in the boost range. Sure the interpolation software compensates, but it's hard to ignore the fact that there are 4 more rows of ignored values. Since the Link allows us to set a MAX MAP value, it seems reasonable that it should allow us to set the zone maps to use this same max.

my .02c
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Old 01-27-2002, 08:01 PM   #14
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Brain fart,

I see the error in my ways. i was thinking since you are running 2bar or about 29psi I woudl just devide that by 10 and get 2.9 incerments.

Then I took a look at the link site and it says "200 Zone Ignition Fuel Map Zoned out to 10,000 rpm x 30 kpa steps". Then seeing that 30 kpa is equal to about .3bar that would make for 4.35 increments.

Plus I just plain ignored the fact that "Maybe you don't realise 1bar absolute = atmospheric pressure, which = 0 psi"
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Old 01-27-2002, 08:24 PM   #15
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Skidd,

PLEASE look at the map that AMR kindly posted. I've already explained that you also have VACUUM to map.

If you're running 6psi/.4bar/1.4bar "absolute", you will need a few more than "2" rows...... And the Link2 has "10" rows, not 6, like the earlier (pre'99) Link plug & play ecu's.

The Link ecu's WEREN'T designed for running such low boost. The plug and plays were originally designed for rallying/competition, by Possum Bourne/Link Electrosystems, and later adapted for road use, on the Jap, and Euro spec' turbo's.

The Link2 is "generic" and allows more flexability, but it's still expected to be used on cars running higher boost, hence it's map parameters.

I WOULDN'T recommend anyone uses one of these, if they are only running very little boost. There are better options.

What it WILL allow you to do, is take advantage of it's extra rows should you be intending to uprate your engine at a later date, and LEARN how to map it in the mean time, in "relative" safety, whilst on low boost.

Happy
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Old 01-27-2002, 08:46 PM   #16
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I'd agree with ya there, this isn't a great choice for low boost application. And as for the "2-row" confusion... I was just refering to the positive pressure range (above 100kpa).
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Old 01-28-2002, 10:32 AM   #17
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Happy,

What would you consider a better low-boost alternative to a Link2? I'm curious since I'm right at the point where I'm choosing something for this purpose

Thanks!
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Old 01-28-2002, 02:26 PM   #18
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Lightbulb

Just spoke to Link New Zealand about all your concerns. I am currently waiting for them to get back to me if they can reconfigure RPM points to scale from 0-7500 rpm and map scale from 0-240kpa. Therefore there will be a more useable map for everyone. However there will be a softaware upgrade fee to reconfigure back to scale of 0-300kps. Should have an answer later today or tomorrow. Let me know if there are other concerns or ideas anyone may have. I am trying to work with you guys to supply you with something that everyone will be happy with. If there are any questions that you want answered please email me at inquiries@carmodifications.com or call 650-255-6015.

AMR
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Old 01-28-2002, 04:38 PM   #19
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That would be schweet! I'd seriously consider the LINK if I could make better use of it's maps. 6500-RPM Redline, and a MAP pressure range up to about 160kpa (8.7psi of boost). I really like everything I've read about the LINK system, and would have little problem with a small price increase to get some MAP specific software upgrade.
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Old 01-28-2002, 05:48 PM   #20
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AMR,

If you can talk Bob @ Link into doing that, it would be a GREAT option for these guys.

I always found him very accommodating, when it came to software changes, and I'm sure with the potential numbers involved, it would be worth his while.

Darshu:

If AMR sort this out, it would make a very good option. My experience is limited to Links, Motec, and Pectel. The Motec, and Pectel would both do a very good job, but at a price.

I'm sure there will be other options available in the US, at a more competitive price.

Happy.
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Old 01-30-2002, 07:22 PM   #21
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Happy-

What would you consider "low boost"? I'm running 5 pounds right now, but I would up it to 8-9 if I had proper management
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Old 01-30-2002, 07:48 PM   #22
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8-9 psi is still considered low boost. It's high for our high compression (10:1) EJ25s, but low for the average turbo motor.
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Old 01-31-2002, 05:52 AM   #23
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Skidd's pretty much answered the question.

The Link ecu's are designed for the Impreza "turbo's", including the STi's. Link would expect most users to run above "normal" boost, and that's the way the map parameters, have been setup.

Happy.
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Old 02-01-2002, 01:01 PM   #24
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Hey AMR MOD
Have you heard back from they LINK guys yet? I'm really kean to learn if it can be tweaked for our low boost applications.
Thanx.
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Old 02-01-2002, 01:18 PM   #25
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Still working on it. Let you guys know as soon as I get an answer.

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