I'm trying to find an ecu to get the car running. I have an 88tii. Will a n332 (87) ecu work or do I need a n333?

If they both work, what are the differences between them (other than the year they were used)?



Any response is appreciated.



-Josh

Yes.

The N332 was made for the 87 T2 which run low impedance injectors. The N333 was made for the 88 T2 which run high impedance injectors.

They will both work, you just need to make sure that the ECU sees the correct resistance. The low impedance harnesses have a resistor box so the ECU sees a high impedance. The high impedance harnesses do not have this resistor box because the injectors already have high resistance. No matter what, both ECUs need to see high impedance. There are half years where it could be either way. What are the numbers on your injectors?



Taken from http://www.rotaryresurrection.com/



***IF using LI injectors on a HI harness, you must splice into the harness, at each injector lead (for a total of 4) 10 ohm/10watt resistors available at radio shack for a couple of bucks. Doesn't matter which wire of the 2 per injector you splice to, polarity isn't an issue here. This bumps the LI resistance up to acceptable load for the ECU to see.



***IF using HI injectors on a LI harness, you must unplug the resistor pack. Next, locate the supply wire in the center of 5 terminals. Bridge jumper wires from this terminal to each of the 4 outlying terminals, which basically completes the circuit without resistors, carrying the HI injectors' 12-13 ohm load directly to the ECU just as a HI harness would.

yeah, Req = 1/(1/R1 + 1/R2 + 1/R3 ... 1/Rn

I have a harness and ecu from and 88 tii ae on the way. So that should be a N333 right? I'm getting ready to order a drivetrain from Osaka. I know how to tell if the engine is s4/s5 (hopefully they will listen when I let them know I NEED an s4). How can I tell if the injecors are low or high imp? Sorry if this is in a faq.

if its really an 88 then yes it should be a n333, not liek theres really any diff between 87-88 tho performance wise



heres a good way to tell if its an s4 or s5, look at the oil metering pump. the s5 has an electroinc oil metering pump that has a black cylander box thing with wires coming out.



the s4 is mechanical with a linkage that goes to the throttle body.



all s5 have high impedance injectors, and i would advice against getting a s5 jdm motor for simplicity....



as for s4 the main way to tell is looking at the colour of hte injectors, the s4 low impedance injectors are a TAN colour.. the high imp s4 injectors are a redish colour.( not 100% on what colour of red but you can definitly tell between tan and redish...)



if your getting a real 88 harness then u will want to get an engine with the red higth impedance injectors!!

I'm running Stock S5 Injectors, and I have a n333, used a n332 before I got my Rtek, and I have the resistor plugged in, wouldn't start with out it.

nismo please stop giving false info.

yes nismo is posting false informantion s5 injectors dont even plug into the s4 wiring harness...



what colour injectors did you have nismo??

False info my ass, I wired the s5 clips in the harness. And they are pink, roundish style, don't jump on people. I'm really petempted to tell you both to **** off, but I won't. https://www.nopistons.com/forums/pub...1047683664.gif https://www.nopistons.com/forums/pub...withstupid.gif

Of course you still had to have the pack pluged in because it wouldnt complete the circuit. The pack is what gives power to the injectors. When using HI injectors on a LI harness, you need to use bridge wires instead of the pack. So your ECU is seeing way HI (twice as much as it should be)

Thank you for telling me something I already know Mr. Electricity.

All I am saying is that you are hurting your performance by having the resistor box still plugged in. You are getting half the voltage that you should be to your injectors. You need to ditch the pack man.

well i was tring to get at they dont fit intot he stock harness, yeah i know u can modify the harness...



im surpized it runs ok with that high of resistance on them.did u notice any difference in how the car runs?? thats around 23 ohms instead of 13ish.

Thats not what you were trying to do, you were trying to make me look like an idiot, but it didn't work too well, and you needed someone else to say something before you did.



Well if it hurts perfrmance, I really must have a rocketship. Because I don't think I can do too much better then 240 at the wheels right now. It's not hurting anything right now, so I'm going to leave it.

i didnt need anyone to say anything.



all i know is using high imp with a resistor gives you an overly high impedance. which isnt what the stock ecu is designed to see....



if it works then cool i guess...