WahooSteeler Posted March 22, 2020 Share Posted March 22, 2020 Getting ready to swap in 89+ ECU, anybody know the nut size on the bracket so I don't have to go by trial and error multiple times while contorting my innards? Link to comment Share on other sites More sharing options...
velco Posted March 22, 2020 Share Posted March 22, 2020 10mm...use a small ratcheting box end for best results. Link to comment Share on other sites More sharing options...
fiatslug87 Posted March 22, 2020 Share Posted March 22, 2020 And expect some roughed up knuckles. Link to comment Share on other sites More sharing options...
JustEmptyEveryPocket Posted March 22, 2020 Share Posted March 22, 2020 remove bottom knee panel (not sure technical name) for easier access and better viewing. I also remove my seat (4 13mm nuts with ratcheting flexible wrench) to make laying underneath the dash easier. Link to comment Share on other sites More sharing options...
Strokermjcomanche Posted March 23, 2020 Share Posted March 23, 2020 8mm hold the Ecu to the bracket and 10mm hold the bracket to the firewall Link to comment Share on other sites More sharing options...
WahooSteeler Posted March 23, 2020 Author Share Posted March 23, 2020 Thanks guys! I dropped the knee panel which does make it easier to get up in there but it's still a really tight fit. I'm heading to Harbor Freight in the morning to grab an extended length ratcheting wrench with flex head to hopefully make it a little easier. Link to comment Share on other sites More sharing options...
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