How to remove 4G ECU

'92 Si VTEC · Post by **jjmartin349571** » Fri Aug 24, 2012 5:49 pm

Hi folks,

I want to get into my ECU, as I have VTEC in first gear and no speed limiter so I'm wondering what's going on in there chip-wise. I fancy swapping in my socketed ECU too whilst I'm at it. Anyway I don't know how to get to the ECU

apparently it's under the carpet on the passenger side??

Would rather find out for definite before destroying my carpet

Cheers,
Josh

Dbo · Post by **Dbo** » Fri Aug 24, 2012 5:57 pm

just pull carpet down and the ecu is covered with a plate. 4 little bolts plate off remove ecu

The "S" express · Post by **honda-hardy** » Fri Aug 24, 2012 6:02 pm

the ecu is located under the carpet in the passenger foot well. remove trims and lift carpet. then you need to remove the foot plate and then expose the ecu. but you need to unbolt the ecu from the body car and then unplug the 3 harnesses atached to it.

the ecu has 2 removable covers held with 5 screw on each. the chip you need to check is circled. the original chip will read oki

'92 Si VTEC · Post by **jjmartin349571** » Fri Aug 24, 2012 6:07 pm

Cheers guys, looks like it should be easier than the Accord then, that was a muffin as it was bolted down behind the centre console. Is there anything securing the connectors to the ECU? There was a metal plate on the Accord with a security screw, I had to saw it off in the end

The "S" express · Post by **honda-hardy** » Fri Aug 24, 2012 6:10 pm

nope, just unplug as you squeeze the clips

Post by **Vtecmec** » Fri Aug 24, 2012 7:17 pm

Just under the glovebox.....

'92 Si VTEC · Post by **jjmartin349571** » Fri Aug 24, 2012 8:22 pm

Shameless Spoon plug

Cheers buddy, handy to see where it is before I go tearing up carpet

'92 Si VTEC · Post by **jjmartin349571** » Sun Aug 26, 2012 8:02 pm

Well got my ECU out today. I'm a bit curious as to what's going on, as my car is showing speed in mph, has first gear VTEC and no speed limiter. How has this been achieved? The ECU isn't chipped, but I'm wondering if there's a piggyback unit or something? In the below pic I can see the speed signal converter, but is the big taped on square thing meant to be there or is that something that's been added in??

mercutio · Post by **mercutio** » Sun Aug 26, 2012 8:09 pm

not seen one on any of my jdm ludes the wiring was a lot tidier than that

bristol_bb4 · Post by **bristol_bb4** » Sun Aug 26, 2012 8:10 pm

unwrap that and see what it is mate, not seen that before