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Old 10-10-2016, 10:34 AM   #1
japan4
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Default 16 STi immobilizer start issue

Hey all,

I recently installed a bunch of parts and had my battery disconnected for 2 days straight. I reflashed the ecu and tried starting the car. Fired right up and then suddenly just shut off after roughly 10 seconds. Assuming it just wasn't fully primed (fpr read it was) I tried again with the same results. Try 3 fired up and stayed running like normal.

Brought it to be tuned and my tuner said he had the same issues. Fired up and shut down twice and started fine in the 3rd try. I've called 2 dealers thinking the key needed to be remarried and neither know what is wrong. They of course claim "it's the mods" or a "tuning issue"....bc we all know tuners can **** with the immobilizer. Smh

One dealership did remarry the fobs to the vehicle and immobilizer and its still doing the same thing.

I should mention as well this is a push button start, and the fob otherwise works perfectly fine. The car recognizes it IE: locks and unlocks including using proximity, turns the key over to use accessory, etc.

Hoping there is a subi guru out there that may have some guidance on this.

Thanks in advance for any information you can provide!!
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Old 10-10-2016, 11:18 AM   #2
japan4
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I should also mention when it shuts down it is actually shutting the injectors completely off.
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Old 10-11-2016, 03:59 PM   #3
carlos.danger
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what parts did you install?
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Old 10-13-2016, 11:01 AM   #4
japan4
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Font mount intercooler, Blouch 18G turbo, TGV deletes, Aeromotive fuel rails/stainless lines/FPR, and IAG AOS.
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Old 10-17-2016, 12:32 PM   #5
carlos.danger
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Who installed them?
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Old 10-17-2016, 12:36 PM   #6
japan4
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A Friend and I. no sense in paying a shop for something you can do yourself.

I've already called COBB to ask if anything being turned off in the tune (since I have no EVAP stuff anymore, or TGV's etc) they said for legal reasons no, at no point will their software interfere with the Immobilizer.
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Old 10-17-2016, 03:39 PM   #7
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Sounds like you did a great job.

No sense in installing parts yourself if you do it wrong.

I'd start with the tgv deletes. Make sure you aren't leaking somewhere.
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Old 10-17-2016, 03:47 PM   #8
japan4
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and the Dick of the day comment goes to you. Congratulations, you win a prize.....

even if there were a TGV leak...that still would not cause an immobilizer to shut the vehicle down. That's like saying you have a boost leak and the car shuts off, doesn't happen. It also tuned just fine with no leaks or loss in any kind of pressure, so I highly doubt that is it.

if you have pertinent information that would be appreciated. Dick comments just make you look like a troll (which you very well could be).

I'm leaning towards an immobilizer malfunction so it may need to be reset. it is more of a nuisance over anything else since it does start eventually. it has been starting on the second try for a few days now which is a plus.
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Old 10-17-2016, 04:13 PM   #9
carlos.danger
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It was a joke. Relax.
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Old 10-17-2016, 04:42 PM   #10
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I do have trouble sometimes with a socket wrench and whether or not it is on tighten or loosen.....so I'll give you partial credit for that one....

But in all seriousness.....WTF IS WRONG WITH THIS THING lol
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Old 10-18-2016, 11:13 AM   #11
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I'm surprised the tuner couldn't dial it in. Usually those guys are pretty good figuring out gremlins. Maybe it's a ground wire or something not connected. You took a lot of stuff apart.
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Old 10-21-2016, 03:32 PM   #12
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so I had an Epiphany today. When you said check the TGV's it made me thing about them a little more. Mine are full composite which now means the ground is on intake manifold is pretty much useless since it is not contacting metal to metal anymore. I am going to run another ground and let you know if it worked or not.

I really hope it does! this is getting quite annoying!!!!
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Old 10-24-2016, 10:25 PM   #13
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Well any luck?
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Old 10-27-2016, 09:05 AM   #14
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yup, that was the issue. I did a test ground from the intake manifold to the negative battery terminal (just used some 14 gauge wire). everything fired right up and works every time. so I have done a permanent ground now that I know it works.

what a headache.....all because the TGV are composite...not one person I talked to could figure that out.....and I had the epiphany while scrolling FB in the BR lol
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Old 10-27-2016, 09:39 AM   #15
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Well, one person you talked to figured it out.
You're welcome.

-a troll
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Old 11-02-2016, 03:53 PM   #16
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Have you had the car tuned yet? What did it make?
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Old 01-23-2017, 08:03 PM   #17
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Not too shabby for a baby 18g and stock long block. The real question is how long will she last!?!?
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Old 01-24-2017, 04:11 PM   #18
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Damn, those numbers on e85 are awesome!
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Old 01-27-2017, 09:36 PM   #19
Chris Cuevas
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Nicely done!

Definitely will make note of the grounding issue when I do the TGV's on my 16 as well!
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Old 01-30-2017, 06:32 PM   #20
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The numbers from the dyno look great.
Currently getting ready to update my 16 sti and had a few questions about your setup.
Which front intercooler was used?
Was it necessary to completely remove the intake to install TGV deletes?
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Old 01-30-2017, 06:37 PM   #21
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I have the mishimoto front mount. And yes, you have to remove the intake manifold to install them. There is no way not to.
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Old 01-30-2017, 06:58 PM   #22
adam sti
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Quote:
Originally Posted by goneagain2011 View Post
Was it necessary to completely remove the intake to install TGV deletes?
really?
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