how do i make an auto ecu in a manual car - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

c0axiL · 02-22-2005, 02:09 PM

what needs to be done for a auto ecu to work in a manual car. its has the sohc to dohc swap?

the head · 02-22-2005, 02:16 PM

is the ECU you are trying to put in SOHC or DOHC? second why wouldn't you just find a manual ECU?

c0axiL · 02-22-2005, 02:20 PM

the car is originally an sohc, then a dohc motor was put in and the ecu is dohc. im not sure why not get another one im doing this for a friend.

the head · 02-22-2005, 03:54 PM

when you hook it up what doesn't work?

thx247 · 02-22-2005, 05:05 PM

If the ecu is the same vintage as your car it should work fine. No speed limit to worry about and a higher redline too. OBD I ecu's will only with with OBD I motors, and the same applies to OBD II motors and Ecu's.

sil80forme · 02-22-2005, 08:51 PM

ok i asked a friend to post this topic for me while i was at school. (thanx coaxil) anyway when i had my 91 hatch i did the auto to manual swap and kept the auto ecu, when i was finished it wouldnt start, so i had to take the bottom harness under the relay terminal, and splice together, well i got rid of that and bought a 89 coupe 5spd and saveed auto ecu and dohc outta the 91, for the sohc to dohc swap, now my question is wil the dohc auto ecu work fine, i dont have that original harness that i spiced, and the 89 5spd is different so i was wondering if there will be any reason why it wont start 2 morrow, (anything to do with the fact that its an auto ecu) so i hope this helps explain everythin thanx

projectRDM · 02-22-2005, 09:48 PM

ECU works with the motor. 89-90 all work together, 91-94 all work together, and 95-98 work together. Auto, manual, either ECU will run it. If you've swapped a 91-94 motor in, then you need a 91-94 ECU. Simple.

sil80forme · 02-23-2005, 03:06 AM

ok thanx thas all i needed to know

02-22-2005, 02:09 PM	#1
c0axiL Leaky Injector Join Date: Jan 2004 Location: carolina beach, nc Age: 38 Posts: 86 Trader Rating: (0) Feedback Score: 0 reviews	how do i make an auto ecu in a manual car what needs to be done for a auto ecu to work in a manual car. its has the sohc to dohc swap?

02-22-2005, 02:16 PM	#2
the head Nissanaholic! Join Date: Jul 2002 Location: in a dark room mastering the art of typing with one hand Posts: 2,164 Trader Rating: (3) Feedback Score: 3 reviews	is the ECU you are trying to put in SOHC or DOHC? second why wouldn't you just find a manual ECU? __________________ I never knew you could do that with an eggplant

02-22-2005, 03:54 PM	#4
the head Nissanaholic! Join Date: Jul 2002 Location: in a dark room mastering the art of typing with one hand Posts: 2,164 Trader Rating: (3) Feedback Score: 3 reviews	when you hook it up what doesn't work? __________________ I never knew you could do that with an eggplant

02-22-2005, 05:05 PM	#5
thx247 Zilvia FREAK! Join Date: Jan 2003 Location: bay area Posts: 1,455 Trader Rating: (0) Feedback Score: 0 reviews	If the ecu is the same vintage as your car it should work fine. No speed limit to worry about and a higher redline too. OBD I ecu's will only with with OBD I motors, and the same applies to OBD II motors and Ecu's. __________________ Finally down to 1 car again. Thank god.

02-22-2005, 09:48 PM	#7
projectRDM Post Whore! Join Date: Dec 2002 Location: Atlanta Age: 51 Posts: 13,812 Trader Rating: (12) Feedback Score: 12 reviews	ECU works with the motor. 89-90 all work together, 91-94 all work together, and 95-98 work together. Auto, manual, either ECU will run it. If you've swapped a 91-94 motor in, then you need a 91-94 ECU. Simple. __________________ FORMERLY R240NA Learn what's really going on and protect your assets now before they're gone forever: www.paypalsucks.com

02-22-2005, 02:20 PM	#3
c0axiL Leaky Injector Join Date: Jan 2004 Location: carolina beach, nc Age: 38 Posts: 86 Trader Rating: (0) Feedback Score: 0 reviews	the car is originally an sohc, then a dohc motor was put in and the ecu is dohc. im not sure why not get another one im doing this for a friend.

02-22-2005, 08:51 PM	#6
sil80forme Zilvia Junkie Join Date: Jan 2005 Location: philadelphia, pa Age: 44 Posts: 487 Trader Rating: (0) Feedback Score: 0 reviews	ok i asked a friend to post this topic for me while i was at school. (thanx coaxil) anyway when i had my 91 hatch i did the auto to manual swap and kept the auto ecu, when i was finished it wouldnt start, so i had to take the bottom harness under the relay terminal, and splice together, well i got rid of that and bought a 89 coupe 5spd and saveed auto ecu and dohc outta the 91, for the sohc to dohc swap, now my question is wil the dohc auto ecu work fine, i dont have that original harness that i spiced, and the 89 5spd is different so i was wondering if there will be any reason why it wont start 2 morrow, (anything to do with the fact that its an auto ecu) so i hope this helps explain everythin thanx

02-23-2005, 03:06 AM	#8
sil80forme Zilvia Junkie Join Date: Jan 2005 Location: philadelphia, pa Age: 44 Posts: 487 Trader Rating: (0) Feedback Score: 0 reviews	ok thanx thas all i needed to know

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