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Mistake - Missing link doesn't really suck ass, just not a good solution with emanage

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Old Oct 15, 2004
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Post Mistake - Missing link doesn't really suck ***, just not a good solution with emanage
Ok guys - this thread is not meant to disrespect ANYONE on the board about parts - but this is truly a waste of money if you are using the emanage.

I just installed one tonight to see if it improve my drivability at all...well, was I mistaken. Car started, idled and ran fine. Than I slowly went into into boost, which is where my problems came into play.

I started to see extremely lean values in my wideband, so I backed off. At first I thought it would be a leak at the MAP sensor, no it wasn't that.

After datalogging the MAP sensor through the emanage - I saw that the missing link locked out the map voltage round 2.08 volts. This is far below my 2.95 boost cut setting in my emanage.....THAT is where my lean spot came from. That approximately .9 volts is huge! I can't believe the damn thing clamps voltage that low.....

The ECU still has fueling capacity on the stock maps all the way to 0 vac. I'm taking this POS of tomorrow....

Don't run this if you are using the emanage - if you do, you will have to tune your car a lot more than necessary.....


Read below - I made a mistake.....
Last edited by opto_isolator; Oct 15, 2004 at 09:34 PM.
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Old Oct 15, 2004
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good stuff.. my cars getting tuned next week.. I didnt put in a missing link.. and now that I know this.. I wont either.. thx opto
much much appreciated
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Old Oct 15, 2004
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yeah, thanks for the heads up!
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Old Oct 15, 2004
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Is there another option?
Or is better not to have one at all?
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Old Oct 15, 2004
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none.... i dn't intindi...
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Old Oct 15, 2004
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Originally Posted by Supermex
Is there another option?
Or is better not to have one at all?
If you use the emanage - you don't need it....its a waste of money. In fact, I threw a baro code P1106 for the first time tonight when I installed it. Never had that code before.

Car ran fine with the clamp in place, don't plan on using it...
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Old Oct 15, 2004
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Ok - I am officially a dumbass tonight.

I opened my log files again after thinking about things. The reason that the MAP sensor voltage was .9 volts low is because of the fuel injector correction factor.

Yeah - so the missing link IS doing its job, because the MAP sensor input voltage was around 2.91 volts. But my injector correction is clamping it to .667 times that, which was outputing around 2.08v.

What happens when the missing link isn't installed? The factory MAP passes 2.95 volts, but the emanage clamps it to 2.95...

The only way to use the missing link and emanage with the injector correction factor is to "pad" the MAP signal around boost. Since you can only tune the AR map RPM against TP, there is no real way to accurately fatten up the MAP signal when boost kicks in.

The missing link works - but the boost clamp is an overall better way to tune the turbo setup.....
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Old Oct 16, 2004
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so you are saying the missing link works fine, but the e-manage is all you really need?
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Old Oct 17, 2004
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Originally Posted by abmerop18
so you are saying the missing link works fine, but the e-manage is all you really need?

It depends on your setup...if you are using the emanage - you don't really need it, unless you want to waste your time tuning longer...
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Old Oct 17, 2004
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Originally Posted by opto_isolator
It depends on your setup...if you are using the emanage - you don't really need it, unless you want to waste your time tuning longer...

OK, so if that is the case - I have E-manage, and Missing Link (Not installed Yet).

Missing Link for Sale....Hint Hint.
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Old Oct 17, 2004
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Originally Posted by canadian2k1si
OK, so if that is the case - I have E-manage, and Missing Link (Not installed Yet).

Missing Link for Sale....Hint Hint.
Anyone running a VAFC or SAFC will need the missing link. Someone will buy it from you post it in the forsale section.
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Old Oct 17, 2004
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Originally Posted by canadian2k1si
OK, so if that is the case - I have E-manage, and Missing Link (Not installed Yet).

Missing Link for Sale....Hint Hint.

Yeah - I put mine for sale as well. I don't need it, plus now I need the money because I have other issues.

SAFC / VAFC guys can still use it, and they need it.....
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Old Oct 17, 2004
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i guess mine is for sale now too
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Old Oct 17, 2004
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Good feed back opto
You are a big man for admiting a mistake.
I'll use the data for consideration when tunning my car soon..
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Old Oct 20, 2004
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thanks for posting the heads up. Im going to hold on to mine till after the install just in case.
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Old Oct 20, 2004
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I am running both the e-manage and missing link, but I did not like the voltage clamp. No probs here.
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Old Oct 20, 2004
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what exactly does the voltage clamp do? it hides the boost from the map sensor?
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Old Jun 13, 2005
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is it hard to tune w/missing link?
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