ST swap

[alltracfreak]

Hey guys I'm back again. Some of you know I couldn't make my mind up on what I would be running in my 91 fwd celica but I came across a deal on 20v ST locally that i couldn't pass up. So my plan now is to do a rebuild on the ST that i picked up and swap it in using the blacktop ecu. Now my questions lol. Is their a difference in the ST and BT igniter and coil? Or could I use either or.

[alltracfreak]

Looking at the price of the ecus I might be better off with a MS

[alltracfreak]

What would be the best route?

[yoshimitsuspeed]

Did it not come with an ECU?
Why run the BT ECU? Is open stacks a must or something?

[alltracfreak]

Cut harness no ecu. I prefer to run map since I can use my existing map and in plan on going turbo.

[yoshimitsuspeed]

Turbos have no problem with AFM.

That aside in your situation if you are comfortable taking on the wiring and or programming I would probably go with proper engine management. You might have a bit steeper learning curve but in the end much more capability.

[morgan]

Is their a difference in the ST and BT igniter and coil? Or could I use either or.

Theyre interchangable

[alltracfreak]

Des it matter if the ecu is from an automatic.

[alltracfreak]

And honestly the whole map sensor thing is just preference. And I'm having someone make my harness for me so it will be a simple PNP process with the BT ecu. Is it possible to have a jumper harness with the MS in case i ever for some odd reason I want to go back? And thank you Morgan for that info BT igniter and coil are on their way.

[morgan]

Des it matter if the ecu is from an automatic.

No

[yoshimitsuspeed]

If you want to swap back to the stock ECU you might consider a
DIYPNP N76 (Nippon Denso Style 76 pin)

[alltracfreak]

Where would be the best place to get a distributor cap and rotor? EBay wants 130$!!!!

[morgan]

Torparts.com

[alltracfreak]

Does anyone know if the 4age flywheel will fit in my fwd 4afe transmission not sure what the size of the flywheel is for my 4afe.

[alltracfreak]

Thanks again morgan

[morgan]

Yes it will fit. I believe the 4afe is 212mm so either use a 212 or 200mm flywheel. Make sure the clutch is the matching size.
No prob

[alltracfreak]

Ok sweet.

[alltracfreak]

Anyone use ralco flywheels?