ecu rev limiter
07-10-2008, 08:34 PM
#5
Originally Posted by ArmyZX
not quite enoughhhh, lol...is there a way to make one for it? just wondering...i love custom stuff
07-11-2008, 05:52 AM
#6
Haterade by da gallon!
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or you can go with bee R and get the nice popy sound!
originally posted by phil280zxt
originally posted by phil280zxt
Remember that you can not use an 81 turbo ecu on the 82/83 turbo's due to the external injector dropping resistors on the 81. The 82/83 turbo's have the resistors in the ecu.
I ran my original auto ecu on my 81 turbo for a while after swapping to a 5-speed tranny. The only noticeable difference was the rev drop off between shifts, but not a big deal. I also have heard that there is no rev limiter in the auto ecu's.
I ran my original auto ecu on my 81 turbo for a while after swapping to a 5-speed tranny. The only noticeable difference was the rev drop off between shifts, but not a big deal. I also have heard that there is no rev limiter in the auto ecu's.
Last edited by lww; 07-11-2008 at 08:59 PM.
07-11-2008, 06:18 AM
#7
Originally Posted by 280zx2by2
or you can go with bee R and get the nice popy sound!
originally posted by phil280zxt
(quote)Remember that you can not use an 81 turbo ecu on the 82/83 turbo's due to the external injector dropping resistors on the 81. The 82/83 turbo's have the resistors in the ecu.
I ran my original auto ecu on my 81 turbo for a while after swapping to a 5-speed tranny. The only noticeable difference was the rev drop off between shifts, but not a big deal. I also have heard that there is no rev limiter in the auto ecu's.(quote)
originally posted by phil280zxt
(quote)Remember that you can not use an 81 turbo ecu on the 82/83 turbo's due to the external injector dropping resistors on the 81. The 82/83 turbo's have the resistors in the ecu.
I ran my original auto ecu on my 81 turbo for a while after swapping to a 5-speed tranny. The only noticeable difference was the rev drop off between shifts, but not a big deal. I also have heard that there is no rev limiter in the auto ecu's.(quote)
07-11-2008, 09:22 AM
#8
The Evil Twin
Join Date: Mar 2001
Location: Seattle, WA
Posts: 9,294
He said there is no rev limiter on the turbo auto ecu. That guy forgot to mention there is no rev limited on the manual transmission ECU and non-turbo ECU as well! Those ECUs are simple. They're like a small switchboard, not really a computer. A Nintendo is more complex than the 280ZX ecu.
The Z31 in 1984 was a big step up in ECU technology.
Shift at 5200 rpm. Its not hard to do. Your 280ZX revs so slow anyway.... all 135hp of it.
Those ECUs are simple. They're like a small switchboard, not really a computer. A Nintendo is more complex than the 280ZX ecu.The Z31 in 1984 was a big step up in ECU technology.
Shift at 5200 rpm. Its not hard to do. Your 280ZX revs so slow anyway.... all 135hp of it.
07-11-2008, 10:16 AM
#9
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Originally Posted by Bleach
He said there is no rev limiter on the turbo auto ecu. That guy forgot to mention there is no rev limited on the manual transmission ECU and non-turbo ECU as well! Those ECUs are simple. They're like a small switchboard, not really a computer. A Nintendo is more complex than the 280ZX ecu.
The Z31 in 1984 was a big step up in ECU technology.
Shift at 5200 rpm. Its not hard to do. Your 280ZX revs so slow anyway.... all 135hp of it.
Those ECUs are simple. They're like a small switchboard, not really a computer. A Nintendo is more complex than the 280ZX ecu.The Z31 in 1984 was a big step up in ECU technology.
Shift at 5200 rpm. Its not hard to do. Your 280ZX revs so slow anyway.... all 135hp of it.
I HATE SUPPLY AND DEMAND!!!!!!!!!!
07-11-2008, 11:56 AM
#10
The Evil Twin
Join Date: Mar 2001
Location: Seattle, WA
Posts: 9,294
People don't buy new ECUs. They buy them from a wrecking yard for $15 or eBay for $20-50.
Stay away from the Nissan Dealership for most items.
Why would you buy a Game Boy when you can play with aligators in Georgia?
Stay away from the Nissan Dealership for most items.
Why would you buy a Game Boy when you can play with aligators in Georgia?
07-11-2008, 12:04 PM
#11
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i was thinking blackdragon and actually dont have a game boy... 
i do have a ps2!!!! now if i can only get a link to a thread on how to wire it up to the EFI system.... i could play madden and drive at the same time!!!!!!!!!!!!!!!
i do have a ps2!!!! now if i can only get a link to a thread on how to wire it up to the EFI system.... i could play madden and drive at the same time!!!!!!!!!!!!!!!
07-11-2008, 01:51 PM
#12
Externally Wastegated
Join Date: Oct 2001
Location: San Diego
Posts: 1,220
Yep, nothing but valve float at 6500 rpm. Not to mention the stock power curve sucks *****. No power after ~5600 rpm. Redline is pointless unless you upgrade the cam and breathing aspects of the motor.
07-11-2008, 02:06 PM
#13
NisTuner
Join Date: Sep 2005
Location: Cleveland, Ohio
Posts: 2,800
That info about using the 81 ECU on an 82/83 car sounds incorrect. The Dropping resistors won't cause any issue, and as far as I'm aware there are no dropping resistors in the ECU. The difference in the rev drop off is related to the the fact that all 81' ECUs are from auto cars. I forget exactly why, but there was a slight difference that someone documented between the 5-speed and auto ecus.
As Bleach said the Z31 ECU/MAF combo was a huge leap forward for fuel injection. According to ZBum the Z31 ECUs have a 6000 RPM limiter or maybe it was 6500? I've never really tried for it. I just do like Nismo said and set up the mallory ignition's rev limiter to 6000.
As Bleach said the Z31 ECU/MAF combo was a huge leap forward for fuel injection. According to ZBum the Z31 ECUs have a 6000 RPM limiter or maybe it was 6500? I've never really tried for it. I just do like Nismo said and set up the mallory ignition's rev limiter to 6000.
07-11-2008, 02:46 PM
#14
The Evil Twin
Join Date: Mar 2001
Location: Seattle, WA
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The dropping resistor is a real issue. Same thing is found on early and late Z31 injectors. Some are in the ECU vs at the injectors. I forgot all the details but my 1988 Z31 ECU needs resistors wired in for an L28 turbo setup.
07-11-2008, 03:44 PM
#15
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what are all of the advantages of doing the z31 ecu swap?
sence my car is a 81 doesnt that make it easier to do the swap cause of the one wire o2 sensor and i dont need resistors?
sence my car is a 81 doesnt that make it easier to do the swap cause of the one wire o2 sensor and i dont need resistors?
07-11-2008, 05:29 PM
#16
NisTuner
Join Date: Sep 2005
Location: Cleveland, Ohio
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I didn't think the resistors were in the ECU and that was why when doing the swap to the 88-89 ECUs you had to wire in resistors. I thought they just used a different lower impedance injector? If they were in the ECU I'd think then we could just swap in the later ECU without resistors?
Advantages: Better Flow, Better Fuel Maps, Improved fuel efficiency, little more power, just runs overall better.
You don't need the resistors unless you're putting in the 88-89 ECU. The Z31 ECU will run just fine without the O2, probably just worse fuel economy. Although you will need to convert over to the 82-83 distributor that has the dizzy mounted crank angle sensor. There's a writeup on HybridZ where a guy walked through putting the swap into an 81.
Advantages: Better Flow, Better Fuel Maps, Improved fuel efficiency, little more power, just runs overall better.
You don't need the resistors unless you're putting in the 88-89 ECU. The Z31 ECU will run just fine without the O2, probably just worse fuel economy. Although you will need to convert over to the 82-83 distributor that has the dizzy mounted crank angle sensor. There's a writeup on HybridZ where a guy walked through putting the swap into an 81.
Last edited by duowing; 07-11-2008 at 05:32 PM.
07-13-2008, 04:03 PM
#19
eff good grammar
Join Date: Dec 2007
Location: Deadford OR
Posts: 1,578
Originally Posted by Bleach
He said there is no rev limiter on the turbo auto ecu. That guy forgot to mention there is no rev limited on the manual transmission ECU and non-turbo ECU as well! Those ECUs are simple. They're like a small switchboard, not really a computer. A Nintendo is more complex than the 280ZX ecu.
The Z31 in 1984 was a big step up in ECU technology.
Shift at 5200 rpm. Its not hard to do. Your 280ZX revs so slow anyway.... all 135hp of it.
Those ECUs are simple. They're like a small switchboard, not really a computer. A Nintendo is more complex than the 280ZX ecu.The Z31 in 1984 was a big step up in ECU technology.
Shift at 5200 rpm. Its not hard to do. Your 280ZX revs so slow anyway.... all 135hp of it.
now back in the real world why are your guy's n/a's slow revving?
mine revs pretty fast
07-13-2008, 10:11 PM
#22
Head Muckraker
Join Date: Oct 2001
Location: Bay Area
Posts: 9,221
For a "measurement" that is absolutely and completely subjective, I find this part of the thread entertaining. I can tell you, compared to just about any motorcycle, the stock 280ZX revvs EXTREMELY slowly! Now, compared to a Ford Aspire, yeah, the stock 280ZX revvs like a raped ape!
