TFI modules

For anything machine shop / speed shop or engine specific. More technical than the range but not quite tuning specific.
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red5.0fogger
Posts: 196
Joined: 2021 Mar 22, 15:58
Location: Newington CT
Vehicle Information: 1986 Mustang GT, Stock block, TFS 170 Heads , N41 cam, ported cobra lower intake, Cartech box upper, nitrous, T5 , 3.73s

TFI modules

Unread post by red5.0fogger »

Hi, Which TFI modules can be trusted these days? I think there are some fake motorcraft out there now?
Is there a certain store or supplier that is known to be trusted?
red5.0fogger
Posts: 196
Joined: 2021 Mar 22, 15:58
Location: Newington CT
Vehicle Information: 1986 Mustang GT, Stock block, TFS 170 Heads , N41 cam, ported cobra lower intake, Cartech box upper, nitrous, T5 , 3.73s

Re: TFI modules

Unread post by red5.0fogger »

I'm trying to get the last little bit out of it.
This combo should be making nice power into the 6000rpm range. For a while I've noticed it lays down at 5500rpm. Not suddenly and not breaking up, just lazy after 5500.
I put in a new motorcraft tfi module on a hunch as something i may have overlooked.
took it out for little rip and it was quite promising from what I can tell. sounds and feels stronger above 5500rpm.
efloth
Posts: 423
Joined: 2021 Feb 15, 22:12
Location: Sacramento CA
Vehicle Information: 1991 F150 4.9L J1X 80lb Injectors E85
1995 F150 5.8L MOB1

Re: TFI modules

Unread post by efloth »

Stick a 4700uf capacitor between the positive and negative terminals on the main TFI connector. Depending on the noise levels in your electrical system you should notice a nice improvement. I had to run only motorcraft modules until I made this simple change. Others were breaking up as RPMs climbed.
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