Throttle Body?
Thread Starter
Intermediate
Joined: Mar 2016
Posts: 47
Likes: 0
From: Rancho Santa Margarita California
Throttle Body?
Thinking about bundling these three parts together. 1. A 58mm BBK throttle body <-- Dont know why this is a link. 2. An Corvette TPI airfoil flow booster 3. An induction front power coupler... Thoughts on if I should put these on my 1994 C4 Vette?
Or are these all china crap
parts that won't do anything for my car.
Or are these all china crap
parts that won't do anything for my car.
Last edited by PsarosJake; Apr 8, 2016 at 01:14 AM.
Race Director
Joined: Oct 2005
Posts: 11,772
Likes: 177
From: Rolla Missouri
2021 C4 of the Year - Unmodified Finalist
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Melting Slicks
Joined: Sep 2010
Posts: 2,422
Likes: 202
The Quality BBK TB & similar already have that Un-safe bolt-on. Air-foil. Built in the casting. It would not be worth spending $290 - up. You would feel a better throttle response. But to be honest really would need a tune adjustment to match the now higher air flow. Unless it was installed on your car when purchased. "free" OR you have plans for more performance part's. upgrade your exhaust.
Instructor
Joined: Feb 2016
Posts: 103
Likes: 13
From: Chesapeake Virginia
I put an air foil on a 1989 IROC Z with the 5.7 (TPI) in it and I liked what it did. It seemed to make the car start easier, maybe smoother is the word. It also took off from a stop smoother. Did it add 25HP? I really don't think so but I liked what it did to the drive-ability of the car. When I sold the IROC I gave the air foil to my brother in law who had a C4 and he found the same results I did. It's on the list to add to the 92 I am bringing back from the dead.
Le Mans Master
Joined: Mar 2004
Posts: 5,107
Likes: 171
From: Dublin CA
Air foil adds zero HP. Not worth the money. This should have no effect on starting or leaving from a dead stop. You might have just knocked out some carbon deposit in the TB when you installed it.
Placebo effect........
Pasr Forum members have installed and dynoed with no positive or negative results other than their wallet was lighter.
Placebo effect........
Pasr Forum members have installed and dynoed with no positive or negative results other than their wallet was lighter.
Melting Slicks
Joined: Sep 2010
Posts: 2,422
Likes: 202
I put an air foil on a 1989 IROC Z with the 5.7 (TPI) in it and I liked what it did. It seemed to make the car start easier, maybe smoother is the word. It also took off from a stop smoother. Did it add 25HP? I really don't think so but I liked what it did to the drive-ability of the car. When I sold the IROC I gave the air foil to my brother in law who had a C4 and he found the same results I did. It's on the list to add to the 92 I am bringing back from the dead.
Melting Slicks
Joined: Sep 2010
Posts: 2,422
Likes: 202
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Team Owner
Joined: Jul 2004
Posts: 28,474
Likes: 3,291
From: Hartford WI
Thinking about bundling these three parts together. 1. A 58mm BBK throttle body <-- Dont know why this is a link. 2. An Corvette TPI airfoil flow booster 3. An induction front power coupler... Thoughts on if I should put these on my 1994 C4 Vette?
Or are these all china crap parts that won't do anything for my car.
Or are these all china crap
parts that won't do anything for my car.
Team Owner
Joined: Jul 2004
Posts: 28,474
Likes: 3,291
From: Hartford WI
I put an air foil on a 1989 IROC Z with the 5.7 (TPI) in it and I liked what it did. It seemed to make the car start easier, maybe smoother is the word. It also took off from a stop smoother. Did it add 25HP? I really don't think so but I liked what it did to the drive-ability of the car. When I sold the IROC I gave the air foil to my brother in law who had a C4 and he found the same results I did. It's on the list to add to the 92 I am bringing back from the dead.
Team Owner
Joined: Jul 2004
Posts: 28,474
Likes: 3,291
From: Hartford WI
I disagree. You seafoam the wheels and run plasti-dip in the engine.
Team Owner
Joined: Feb 2006
Posts: 23,218
Likes: 117
From: San Antonio Texas
I've got one of the plastic airfoils in my throttle body intake. It fits very well to the stock 48mm throttle body, and the air cleaner pipe fits snuggly right over it. Does it work?, beats me! It was on the car when I got it and it runs just fine so I left it alone.
58mm throttle body is a waste of your money unless you have a really built 383. It's just WAY too big. The LT1 won't flow very much more than the 48mm will supply any way. You might see a slight improvement with a 52mm but after that, it won't flow any more than if you just took the thing off the manifold completely. The seat of the pants thing that people feel is when the engine finally gets past the huge bog and starts pulling. By that time, the stock throttle body would have you a lot farther down the road.
58mm throttle body is a waste of your money unless you have a really built 383. It's just WAY too big. The LT1 won't flow very much more than the 48mm will supply any way. You might see a slight improvement with a 52mm but after that, it won't flow any more than if you just took the thing off the manifold completely. The seat of the pants thing that people feel is when the engine finally gets past the huge bog and starts pulling. By that time, the stock throttle body would have you a lot farther down the road.
Pro
Joined: Jun 2008
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From: Louisville Kentucky
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Don't waste your money! You wont see/feel any difference.