TFI module relocation - Page 2 - Ford Muscle Forums : Ford Muscle Cars Tech Forum
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post #16 of 23 (permalink) Old 08-24-2014, 01:34 PM Thread Starter
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Re: TFI module relocation

Hi David,

Surprisingly, there is absolutaly no mark on the distributor cap...
I got this message from the guy who sold me the EFI at Steve Morris so I'll give a second try then...

Quote:
Set the balancer at 30 degrees on the compression stroke.

Then rotate the distributor so that the rotor is in the middle of the #1 terminal on the cap.

Start the engine and check timing with the light, adjust as required.

The distributor may have a rubber band on one of the terminals, if that is the case then that terminal must be #1.

All that matters at the end of the day is that the laptop and damper show the same value. So all you need to do is get it close enough to start and then put a timing light on it to bring it into perfect alignment.

With a TFI system you should not have to touch any parameters in the EFI system, simply turn the distributor until timing lines up with the laptop and lock it into place.
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post #17 of 23 (permalink) Old 08-24-2014, 08:28 PM
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Re: TFI module relocation

OK. I also checked against a stock cap, and it's the 4th terminal CC from the marker as shown below. If your EFI does not care which is #1, then you don't either. It's only to signal #1 for ECMs with timed sequential injection.

David


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post #18 of 23 (permalink) Old 08-26-2014, 01:06 PM Thread Starter
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Re: TFI module relocation

To be on the safe side, we'll use cylinder 1 as indicated on your picture.
We can't do anything during the week so I'll have to wait this week-end...
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post #19 of 23 (permalink) Old 08-27-2014, 12:29 PM Thread Starter
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Re: TFI module relocation

David,

Accordant to you, what I've been told make sense? There is no need to set the damper at 10deg but immediataly as explained?

Wat about the sensor, nothing to do?
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post #20 of 23 (permalink) Old 08-27-2014, 10:02 PM
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Re: TFI module relocation

If you mean the Morris instruction, yes, they make sense to get it close enough to start the engine, and then set correct timing with a light. As I said in my instructions (using the sensor voltage change at 10°), the rotor will not exactly line-up with the #1 terminal, but the timing should be just about perfect before starting. Morris' method is just a different approach, to get timing only close enough to start the engine, then set it correctly with a light.

Pick either method and go with it. The engine will run without ECM timing control input, and the TFI will fire at whatever base timing you set - and stay there (no advance). This is known as 'limp home' mode, in-case of ECM timing control failure, such as a bad connector or broken wire. I stated 10°BTC because that is the typical setting used with TFI when there is no timing control from the ECM. If your ECM instructions say to use a different base timing, use that number instead. This is important, as the remaining ECM timing advance is added to that base timing. Does that make sense?

BTW - you can do initial startup with the ECM disconnected from the TFI, so that it is not giving confusing timing signals if the ECM settings are wrong somehow. The fuel injectors will still work. Once the engine is running stable on base timing, then connect the ECM signal to the TFI, and the timing should follow whatever is programmed.

David

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post #21 of 23 (permalink) Old 08-30-2014, 12:45 PM Thread Starter
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Re: TFI module relocation

It took us 2 min to fire the engine following Morris instruction. Very easy!
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post #22 of 23 (permalink) Old 09-04-2014, 09:15 AM Thread Starter
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Re: TFI module relocation

So I drove it yesterday and it is perfect. The relocation of the TFI and the addition of the MSD box made the difference.

The TFI module stayed cool, ambiant temp and compared to the distributor which was hot as hell, it helped a lot!

We reached an enormeous 2-3psi of boost, 35% TPS, more than enough LOL

Next step: cruising tuning...
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post #23 of 23 (permalink) Old 07-14-2015, 01:29 PM Thread Starter
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Re: TFI module relocation

I had to relocate again the TFI but its new location is much better and the connectors are not exposed at all. Close to the battery compartment, barely hidden by the intercooler tube.
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