75mm Throttle Body and Intake Kit installed on my other ride.

The registration and a smog inspection was due on my 02 Grand Marquis last month.  In order to pass smog I had to remove my intake setup and return my car's ECU back to stock settings.  My ride passed with flying colors!

I finally got around to re-installing my bolt-ons and replaced my ported and polished 65mm mustang throttle body with a beefier aftermarket 75mm throttle body.  It's time to let my 4.6 breathe!

It only makes sense to go with the 75mm since I upgraded the MAF sensor to a Mustang 80mm from the stock 70mm maf.  I also have a 75mm Trickflow intake plenum so the intake air should be a lot straighter since the plenum and TB are now the same size.

I also sprayed my previously chrome intake pipe with a can of ceramic engine enamel.





Here's a pic of the 75mm TB eating the stock throttle body.

What else have you done to the 4.6? Curious what demands the larger TB.

Did you have to do any tuning for the bigger TB? Me and my friend were going to grab a GT TB to put on his 3.8.