Originally Posted by MoonPopGun

Cant find anyone doing a TBI turbo setup on anything. If I can get this sorted out I will start by getting a RB manifold, and then by the end of next month getting the TBI kit.


This is the item I am looking at.

Go EFI 4 600 HP Power Adder ? FiTech Fuel Injection

What I ask Fitech:

"Is what I need to know is this.


1. All the Power Adder needs to run is impute from the exhaust, MAP sensor, and the ignition RPM.

- How are you/what are you hooking up to in ignition system to tell ECU what's going on.

2. I can time my engine as normal with a timing light, and this is all I need. The Power Adds ECU does not need to adjust the timing to run yes?

3. Running a turbo the ECU will be able to sort out boost?


SO I need to know if I bolt up this EFI body up will it work. If my timing is set, there is a O2 sensor, and the MAP can read boost... will it sort everything out?"

What Fitech said back:

"The 600 power adder will support up to 25 pounds of boost, does come with a wide band O2 sensor. You can program target air fuel ratio's at various load in RPM points including boost. If you have the timing control side covered all the FiTech would need is a four-cylinder RPM input, 6 or 8 will work to.

Could even use a crank trigger if need be. You did want to try some timing control, all you would need is a locked out distributor with a 2 wire magnetic pickup.

Any other questions let me know"

Ok so the kit has the Exhaust Sensor, MAP Sensor, and it can read Ignition RPM. All the imputes we need to run but....

How do we translate a rotary ignition signal to the ECU? I have a DLIDFIS set up on the car right now with a semi locked distributer. I was told/digging around in "search" the 13b is more like a 2.6l four banger? That seems wrong. Would running the DLIDFIS be more like a V6 signal? Going off of one coil it be 3 fires per half eccentric shaft rotation, so six fires would be a full RPM like a V6?

Could I set the ECU to try, and run a 2.6/3 liter V6? In theory it should be able to sort its self out... yes?

Originally Posted by wankel=awesome

I just typed up like 2 pages of problems you're going to have, and that FITECH knows about, because I was to test this system and help develop it for the rotary, and they for the most part backed out.

It isn't going to work like you think. It actually doesn't work like anyone thinks. You input a startup map, (none for rotary at all, and I'm not writing them one anytime soon, seeing as they failed to ship the product) then you physically set "targets" along different simple parameters. It acquires target AFR'S by trial and error, starting with the base map.

It has a % of richness that is hard set for when the engine is cold based on that map. As the coolant temp increases, it leans it out. Simple.

Here's the biggie though: It adjusts idle mixture by 2 inputs. Vacuum reading, and tach output "speed".

So if you tell it that you want 900 rpm, it will adjust to that speed, but it will not smooth out. Here's why: Rotary vacuum is not smooth. Even on a stockport, UNLESS both rotors are pulling on the same plenum, and your sensor is in said plenum.

The fitech pulls vacuum from a single throat of the TB. This means you're only getting a strong vacuum signal from one runner, and it's corresponding rotor. Bit of an issue.

It fine tunes the entire map with the vacuum readings, so unless you either a) modify your intake manifold so that the runners cross over (performance decrease, unless it's a well designed plenum) or b) change the way it reads vacuum, which you're pretty screwed on with an RB intake manifold.