5 speed swap problem

[nismo240sxvert]

Alright so me and my friend did a 5 speed swap on my ka24de 1994 240sx convertible. Car runs fine, but i'm having issues with the idling. From what I read on this (http://zilvia.net/f/showthread.php?t=74615)post, its the ECU (I am currently using the auto ecu). So I bought a 5 speed ECU , the number on the back of the ecu is 28, which i believe is for the 5 speed DOHC 240s. I switched the ECU's and the car cranks but wont start. For now i switched back to the auto ecu for daily driving. I have no idea why its not starting with the 5 speed ecu, other people who have done this say all they do is just switch the ECU's. Any clues? Thanks in advance...

[rwtf]

um bad ecu? try it in someones else car.

[zerodameaon]

You have to set your idle after the swap. There is nothing wrong with the auto ECU, I have used it in my own car for years and the few other cars I have helped swap and never had a single problem.

[nismo240sxvert]

You have to set your idle after the swap. There is nothing wrong with the auto ECU, I have used it in my own car for years and the few other cars I have helped swap and never had a single problem.

The car idles fine, 700 to be exact. But let's say I tap the gas on neutral, the car will stay revved around 1500 for a second or two then go back to 700.

Sent from my Nexus 5 using Tapatalk

[zerodameaon]

That is nothing to worry about, its not going to harm anything so just leave it and enjoy no speed cut and better fuel maps.

[Laujpha]

I had a idle issue..93 240sx hb auto swap to manual was done by me..i adjusted the timing but idle wont go below 1500 rpm..help please..i try everything i can think of but no luck..try manual ecu and car start smoking..