Question about using dual throttle bodies
Thread Starter
Intermediate
Joined: Jul 2023
Posts: 31
Likes: 20
From: Kansas City
Question about using dual throttle bodies
I'm going to be installing a Holley dual plenum intake on my c5. I don't need any replies about how a FAST is easier or anything like that. I want to do something others have not done. That being said, can anyone offer some insight on how to achieve the use of twin DBW throttle bodies without a standalone ecu. I have read that a Torque Rush x2 unit is an option but have no info on the quality of the piece. Is it possible to run two TB's off the main harness with simple splices? Or would the added load of the second TB interfere with inputs to the pcm? I am currently waiting on throttle bodies but I will try to run them via alligator clips off the main harness and go from there. Hopefully someone knowledgeable on this electrical system will chime in. Thanks in advance!
Safety Car
Joined: Mar 2017
Posts: 3,758
Likes: 935
From: Orlando Florida
Review of the Torque Rush website certainly seems to indicate they have exactly the experience and knowledge base you need. Take advantage of their “contact” info and see what they have to say. Then update us on what you find.
What are your thoughts on air intakes? Photos will be required, obviously.
http://www.torquerush.com/contact.html
What are your thoughts on air intakes? Photos will be required, obviously.
http://www.torquerush.com/contact.html
Thread Starter
Intermediate
Joined: Jul 2023
Posts: 31
Likes: 20
From: Kansas City
For air intakes I will make an X-pipe of sorts, with the maf in the middle. I will also weld in a balance tube for the plenum so the MAP sensor works as it should. My theory is that an x pipe intake should have a similar effect as it would in an exhaust. Hope fully no turbulence is created in the maf. If there is I'll just go true duals like every other car that has twin TB's.
Tech Contributor
Joined: Jan 2007
Posts: 19,341
Likes: 1,121
From: Dyer, IN
For air intakes I will make an X-pipe of sorts, with the maf in the middle. I will also weld in a balance tube for the plenum so the MAP sensor works as it should. My theory is that an x pipe intake should have a similar effect as it would in an exhaust. Hope fully no turbulence is created in the maf. If there is I'll just go true duals like every other car that has twin TB's.
Drifting
Joined: Jan 2008
Posts: 1,722
Likes: 138
From: Florida
St. Jude Donor '09
For air intakes I will make an X-pipe of sorts, with the maf in the middle. I will also weld in a balance tube for the plenum so the MAP sensor works as it should. My theory is that an x pipe intake should have a similar effect as it would in an exhaust. Hope fully no turbulence is created in the maf. If there is I'll just go true duals like every other car that has twin TB's.
Thread Starter
Intermediate
Joined: Jul 2023
Posts: 31
Likes: 20
From: Kansas City
I feel that my theory makes sense logically. An x pipe in an exhaust creates a scavenging effect that helps pull the gasses out of the exhaust faster. I feel that the same effect would be had in an intake. As I said, I don't know if the maf will be okay right in the center, but I'll find out eventually. The balance tube is just to help keep manifold pressures and air volume consistent. The car I had before my c5 was a twin turbo 300zx, which have a dual plenum intakes. So I'm taking my knowledge of that design, as well as successful aftermarket parts offered for that car to hopefully make this setup as effective as possible.
Tech Contributor
Joined: Jan 2007
Posts: 19,341
Likes: 1,121
From: Dyer, IN
I feel that my theory makes sense logically. An x pipe in an exhaust creates a scavenging effect that helps pull the gasses out of the exhaust faster. I feel that the same effect would be had in an intake. As I said, I don't know if the maf will be okay right in the center, but I'll find out eventually. The balance tube is just to help keep manifold pressures and air volume consistent. The car I had before my c5 was a twin turbo 300zx, which have a dual plenum intakes. So I'm taking my knowledge of that design, as well as successful aftermarket parts offered for that car to hopefully make this setup as effective as possible.
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