earossi

There are (4) hardened tamper proof bolts that secure the cover over the 993 ECU under the drivers seat. I've done a search but cannot find any discussion of the easiest way to remove these bolts in preparation for removing the ECU. Will someone share how to remove those bolts easily?

jenskleis

Hi Ernie,

I removed mine a few weeks ago, using a sharp chisel and a hammer. You need to hit them from the side, at a sharp angle, in order to push them free. Then simply unwind using your fingers.

I hope this description makes sense to you. Unfortunately, I don't have any photos.

Try to do a search on Steve Wong tuning chips. I got the instructions from a thread about installing chips.

Good luck!


Jens

Neil Perry

Hi
I suggest a dremel and a fine grinding wheel and ground a slot in the heads and then used a flat head screwdriver.

Good Luck

superformance

Agreed with Jenskleis. I've used chisel to remove those anti-theft bolts.

Mark in Baltimore

RyanPrisco is the same spammer who used the name "ClaraJohnson" on the 993 board a few days ago. https://rennlist.com/forums/993-foru...ml#post9739221

A quick check of his posts shows that he answers with near monosyllabic words such as "bump", "agree", "thumbsup", "support", etc., just like Clara did. A latent hyperlink (I will not post it here and have deleted it in the quoted text) is embedded in the responses if you do a search on his posts, but the links are not visible or active when you look at the actual posts in a thread. (If you quote his post, the link will appear in the quoted text.)

Mods, please remove this post? Also, can you block the IP address to try to get rid of this lowlife? Thank you.

Mike J

I have ground the heads off with air tools and a small bit - then remove by hand once the cover is off..

s2racer

my update on removing the security bolts...dremeled a groove in the heads, used a chisel to loosen (striking lefty-loosey) then used a screw driver to remove them. Wasn't really too comfortable with using forceful chiseling around the electronics (which I assume are somewhat sensitive to vibration). Worked like a charm. Will replace with proper bolts.

autobonrun

Congratulations, not an easy job. I had to use every method described in this thread. At one point I considered explosives.

samurai_k

The easiest is drill a hole on the bolt head and then use a sprial bolt extractor.

https://www.homedepot.com/p/Drill-Am...waAnE0EALw_wcB

autobonrun

At least for me, the problem was the smooth hemispheric shaped head. I couldn’t get a pilot hole started. The bit kept slipping off.

samurai_k

Use a pointed steel punch. I agree if you don't the drill bit will wander and screw up

https://www.homedepot.com/p/TEKTON-7...6084/205820519

inkatouring

I just did this a month or so back and tried all the various methods listed here. The easiest, IMHO, was to use a rotary dremel tool with round blade (?) to cut a notch in the center and unscrew it with a screw driver. I was able to unscrew without needing force -- chisel or otherwise, just unscrew it. See the pic below for the right blade....

s2racer

That's what I did, but the screws were in too tight...I need to get a new bit socket (never have enough tools )