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I have an 03 Silverado and was looking at the throttle body. It has a big restrictor kind of thing on the back of the plate the blocks a lot of flow at wot. I had heard that taking that off will mess with egr flow but will also supply more air and therefore, more power. Have any of you guys done this, and is it worth it? What problems does it cause besides shortened life on the front plugs?
I had a 02 silverado 4.3 and i removed that restrictor and and had no ill effects except more power!:burnrub:
Yeah, go ahead and take it off. Just be careful...
evan, i would almost suggest taking the hole TB off when you take that bumpstop thing out...dont wanna drop anything down in there...
Who has done something like that in here? Hhmmmmmm, I wonder.Quote:
Originally Posted by nonecktribe
I had an 02 4.3 5 sp and cut that out witha dremell and ported it . Now it was a omg gain but you could feel that it did something in the seat dyno you will be happy if you do it
Sweet. I was expecting to hear someone say something along the lines of "Holy s*** don't do it!" but if none of you have had problems, I am going to get right on it. What is the best way to go about it? I haven't looked at it a whole lot but I would guess it is a type of rivet or something. And James, I am thinking about using your idea and taking it completely off. I will decide that when I find out what all that involves and what it's gonna take to get the restrictor off. Thanks guys.
-Evan
Scratch that. It looks like the "butterfly" comes off with two torx screws and from there I just take the restrictor off with another screw or two. I'll let you guys know how it turns out.
just be sure if you take the rivots out that you plug those holes or it will idle high...
Jake you called that one. I honestly ddin't think about it until I had the plate in my hand with three rivet holes. Then I realized that I definitely hadn't thought that one through. The funny part is that I had decided to do this at a friends house during my lunch break and he didn't have a rivet gun or any way to plug the holes so I drove all the way back to work at 4000 RPMs gaining speed without touching the gas. Nothing a few rivets and time with no customers in the store didn't fix.
thats a good quick fix,i just welded the holes shut and ground them off.
got any pics of this piece, id like to get a lil more out of my 4.3 in my truck
just go a head an yank out the motor an put in a 6.0.. problem solved.
Haha...funny that you of all people say that Ricky. You make it sound like such an easy thing to do... :LOL:Quote:
Originally Posted by ChevyLee
takes what 3 hrs max. just a few bolts here and there, plug this in plug that in.
hey no reason not to try and blow up the 4.3L first, with a 250 shot of the the big bottle. lol
I almost thought about doing that to mine before I swapped it. But then I realized I could get some cash for it to help my swap fundQuote:
Originally Posted by mike427