throttle body question
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New User
Joined: Jun 2003
Posts: 4
Likes: 0
From: san diego
throttle body question
I have a 4.6l '98 SOHC expedition and I wanted to know if I put on a 75mm throttle body would I have to add anything else to make this work or is this a simple screwdriver job. Also, would I have to change anything such as reprogramming the computer or putting on a new MAF sensor. Also, is all this worth it or is it a sham like the throttle body spacers, of which I found out was a scam from this forum. I have added a K&N FIPak and a bullit cat-back exhaust. I want to do more and I'm jumping at this chance. Thanks.
Senior User
Joined: Feb 2003
Posts: 369
Likes: 0
From: Bronx, New York
throttle body question
I have the 5.4l, but I believe the 75mm TB I used will work on either. First off, the upgrade is well worth it. Any mod that will allow more air into the motor will give you more power. As far as other upgrades, You should have a cold air or FIPK installed to take full advantage of the increased air flow. What good is a 75mm TB (3") is you have a smaller diameter air intake ? A bigger exhaust will help as well. As far as the install goes, it was pretty easy. Remove the stock air intake, then the 4 bolts on the TB. Switch the Throttle Position Sensor over to the new TB, and re-install. You need to have a new gasket, or some of that silicone gasket maker stuff.......
Junior User
Joined: Apr 2003
Posts: 98
Likes: 0
From: Redondo Beach
throttle body question
Rtpjunior, Did your TB come with a gasket or did you have to buy one? I've noticed that the one's on the i-net don't mention gaskets...
Where did you get yours from? I found a 75mm BBK for $195.00 on the net. Is this a good price?
Did you have to reset the computer after tye install?
Where did you get yours from? I found a 75mm BBK for $195.00 on the net. Is this a good price?
Did you have to reset the computer after tye install?
Senior User
Joined: Feb 2003
Posts: 369
Likes: 0
From: Bronx, New York
throttle body question
I found mine on Ebay motors for $160. I had to make a gasket out of that silicone RTV stuff, but the install was pretty painless. I reset the computer after the install for good measure, but the install manual did not mention it.
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