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A Plug-and-Play, DIY-Installable 993 Immobilizer Defeat

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Old 03-11-2020, 09:32 PM
  #361  
Jay777
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Originally Posted by tikka308
Will the immobilizer let you use the car with an extra key (but without keyfob)? In other words, can I use a spare key (sans key fob) to lock/unlock the door and start the car?
The IMMO BLOCK's only job is to keep the immobilizer "mobilized" -which it does, but it doesn't know (nor does it care) what the state of the door locks is - that's the domain of the Alarm Control Unit which is always watching for "illegal" actions or sequences. As far as the Immo is concerned, the car is startable, but the ACU is in the background looking at the locks and may squawk (alarm) if you do what you suggest. Easy to test, though. The system was a lot simpler when it was just the ECU and ACU but when the Immo got band-aided in to add remote locking and "modern" anti-theft fetures, things got messy. Kind of like Windows on top of DOS.

Last edited by Jay777; 03-12-2020 at 10:51 AM.
Old 03-11-2020, 09:35 PM
  #362  
Boxster-pte
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Hi Jay....received my IMMO today.....10 minute install and working great on my TIP. No Issues. Thanks for the cookies too!
Old 03-11-2020, 10:56 PM
  #363  
rs911porsche
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Thanks Jay, Mine is working great! With this and the clutch bypass this car feels like my old 1971 911T!
Old 03-12-2020, 12:40 PM
  #364  
Sugeray!
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I’d like one too, please put me on the list?
Old 03-12-2020, 12:58 PM
  #365  
gt3'er
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Please put me on the list. Thanks, Jay!!
Old 03-12-2020, 01:11 PM
  #366  
mav10flight
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Default Please add me to the list ! Thanks !

Hi Jay !

please add me to the list !

thanks you 😊


Originally Posted by Jay777
It looks promising. I’ll give an update in a week or 2 after further testing but if the prototype I have installed has no unwanted side effects, there is indeed an easy immobilizer defeat that doesn’t require hardware or firmware mods to the ECU, Alarm unit, or an R61 bypass. The “fix” involves the addition of a small circuit board (~sq inch?) inside the immobilizer. I’m in the process of working out the best way to package this solution to make it an easy DIY. A PCB needs to be designed so I’m trying to gauge how much interest there is before proceeding further. Stay tuned....


********************** 2/5/20 Update *****************************

For those just tuning in, much has changed. The device is now 100% plug-and-play.
(See posts #145, 146). Post 184 shows how the unit installs. RL'ers have beta-tested
early prototypes and reviews can be found at posts 116, 117 and 138. A Group
Buy list started at #203 with units scheduled to start shipping in early March.
Old 03-12-2020, 02:19 PM
  #367  
CarreraWilly
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Hi Jay - received my Immo Blocker today. Can't wait to install it. It looks like a very high quality piece of equipment. Thanks!
Old 03-12-2020, 02:47 PM
  #368  
Jay777
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Originally Posted by CarreraWilly
Hi Jay - received my Immo Blocker today. Can't wait to install it. It looks like a very high quality piece of equipment. Thanks!
Yes, quite a few got delivered today. Hoping to see more reviews soon. Enjoy!
Old 03-12-2020, 04:21 PM
  #369  
orangebox
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I got my two. The 98 car it installed very easy and works as described. My 97 is going to need a little more oomph to get the gauge out but I’ll push it from the frunk side which should be easy. Great product!
Old 03-12-2020, 04:29 PM
  #370  
Jay777
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Originally Posted by orangebox
I got my two. The 98 car it installed very easy and works as described. My 97 is going to need a little more oomph to get the gauge out but I’ll push it from the frunk side which should be easy. Great product!
Way to go Shaun, thanks for the feedback. (Can you really push the gauge out from the frunk?)
Old 03-12-2020, 05:36 PM
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Yes you can. Remove the rubber weatherstripping right under the cowl and pull off the plastic panel. I was actually going to push the gauge from the rear but it was so easy to just reach in and pop the gong relay out and throw your immobilizer on. You can also remove the hood strut to give you a bit more room. Here is a pelican article pretty much outlining what I just did. https://www.pelicanparts.com/techart...lb_Removal.htm
Old 03-12-2020, 08:11 PM
  #372  
rk-d
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Just installed it. Did a quick test - works as advertised. Literally plug and play. Brilliant.

First impression - nicely put together unit. Solid construction.

I had to use pretty firm pressure to lever out the gauge. I suspect it's never been removed. I used a nylon pry bar wedged under the rubber lip to work it out.

It's tight behind the gauge and the gong relay needed some wiggling to break free.

Otherwise, it's a 5-10 minute job. I did replace the battery with a lithium so hopefully don't have to mess with it for awhile.

So far so good - cool product!
Old 03-12-2020, 08:42 PM
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Got mine today. Thanks!
Old 03-12-2020, 09:19 PM
  #374  
Jay777
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Originally Posted by rk-d
Just installed it. Did a quick test - works as advertised. Literally plug and play. Brilliant.

First impression - nicely put together unit. Solid construction.

I had to use pretty firm pressure to lever out the gauge. I suspect it's never been removed. I used a nylon pry bar wedged under the rubber lip to work it out.

It's tight behind the gauge and the gong relay needed some wiggling to break free.

Otherwise, it's a 5-10 minute job. I did replace the battery with a lithium so hopefully don't have to mess with it for awhile.

So far so good - cool product!
Thanks D. You were the inspiration for the Plug and Play..
You may not have to use your FOB for 3 years...
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Old 03-12-2020, 09:40 PM
  #375  
rk-d
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Originally Posted by Jay777
Thanks D. You were the inspiration for the Plug and Play..
You may not have to use your FOB for 3 years...
it’s incredible to me that such a big PITA has been solved with such an elegant solution. People have complained about this immobilizer for decades. Congrats!


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