Houstonderk

iTrader: (3)

Alright so im am switching my 87 tii drivetrain and putting it in my 88 n/a. I am getting an FD fuel pump, the tii harness, and an hks manifold with a jdm turbo. So i am going to switch the intake manifolds, running tii injectors. Will there be any problems with this setup? I still probably need a fuel controller of some sort and the tii front cover, but how do i feed the oil to the turbo since the front iron is not the same?

Aaron Cake

iTrader: (1)

You're turbocharging the NA engine? If so, then please read the FAQ as it covers multiple ways of doing this.

5252

Remember, 87 TII injectors are low impedence, 88 is high impedence. You can NOT use low impedence injectors with an ECU that is mapped out for high impedence. However, you can use high impedence injectors with a ECU mapped out for low impedence. But why would you wanna lol, high impedence (also known as "peak and hold") is better than low impedence injectors (also known as "saturated"). Tipacally, peak and hold injectors respond quicker.

Houstonderk

iTrader: (3)

So the 87 Tii harness is set for low impendence? is there a way to switch it to high and get the high impendence injectors?

Houstonderk

iTrader: (3)

I am going to put the Tii intake manifolds on the n/a engine but i need to find that website that has that adapter that makes the manifold bolt to the engine. Anyone know that website?

5252

Just use low impedance injecors and the ECU from an 87 TII, I'm sure you can find one for pretty cheap from sombody that is running a standalone. If you use low impedance on the 88 ECU it will burn it up, BuT, you CAN use high impedance on a 87 ECU... in other words:

You can use the injectors from a 88 in a 87, but you CANT use the injectors from a 87 in a 88. High impedance injetors are about 12-16 ohms, low impedance are about 2-5 ohms, jsut use a ohm meter on the injector to be sure if its high or low.

Houstonderk

iTrader: (3)

Is this that piece that I need?

5252

https://www.rx7club.com/showthread.p...+ECU+injectors
Here, check out that link, its a dude thats here on the board selling a bunch of TII ****.

Houstonderk

iTrader: (3)

I just got a turbo, manifold and harness from him.

Houstonderk

iTrader: (3)

Well i just seen that the harness was an 88 so it has the high impendence. WHich Ecu do i need to get? an 87 or 88? and is the high impendence the one that uses that soleniod pack by the headlight or is that the low?

cwsttu

if your using turbo II intake manifolds you do not need to make an adapter for the exhaust manifold

Houstonderk

iTrader: (3)

Well i heard that the Tii lower manifold does not boltup to the n/a engine and that an adapter has to be made.

ddub

Or you can "hacK" it up and port match it to the N/A block, that's been done just fine by many people before.

Houstonderk

iTrader: (3)

So its just the ports that don't match?

cwsttu

sorry yeah i meant portmatching it.... but off topic... where did you find those plates?

ddub

Yes. And the TII LIM has 1 more bolt/stud hole the N/A manifold doesn't have and the block doesn't include. That plate you posted doesn't use it either, but some people just drill and tap the block.

Houstonderk

iTrader: (3)

So I can bolt the Tii LIM to the n/a engine with some portmatching. I am getting an 88 tii harness so I need Tii high impendence injectors? I am getting an FD fuel pump for the extra fuel. And do i need an 87 Tii or 88 Tii ecu with a S-afc?

cwsttu

here read this

http://www.teamfc3s.org/forum/showth...threadid=37694

Houstonderk

iTrader: (3)

So does the 88 Tii harness use high or low impendece injectors? I need to make sure about all this.

ddub

Guess it could depend if it was a leftover 87 sold as an 88 or if it was a true 88. I think the switch from low to high impedance was 87.5, something like that.

Houstonderk

iTrader: (3)

Wasn't it like 86-88 low and 89-91 high?

ddub

No. First there was no 86 TII they started in 87. Second, like I said, the switch from low to high was in 87.5 I believe. Example, I have an 88 GXL and it uses high impedance, but I think some of the very early 88's might have still used low impedance, however I am not 100% sure.

Houstonderk

iTrader: (3)

Is there a way to tell if the harness is for low or high impendence injectors?

Houstonderk

iTrader: (3)

Alright so the 87 ECU i am getting is set for low impendence injectors so that means that i can use the high impendence injectors that also work better?

Houstonderk

iTrader: (3)

Man it so much longer to remove all the n/a stuff than the turbo stuff. Also I found somthing really weird in the sub-zero starting bottle 'ANTIFREEZE'. What the hell is antifreeze doing in there? Oh well. Is it necessary to drill and tap that one part on the engine? It already has like six other parts that are bolted to the engine.