Calvo
Newbie
I drive a 1998 Chevy Tahoe 4D LT with the L31 350 (5.7). I'm looking to do a complete exhaust replacement, but the headers is where I'm finding most of my issues. I have these tubes that connect to the stock manifolds, I've included pictures below. There is a port in the front of the manifolds that are connected to each other and lead to this box toward the front driver side of the engine bay (pictures also included). No problem right? I don't have any issue with the car. However I CANNOT for the life of me find any after market headers that have this port/bung for what ever these things are. And thats the main issue, I don't know what the heck they are. If I didn't know any better I would just get rid of them, slap some headers on and forget about it. But then comes the issue of a warning light or car not starting due to the computer freaking out that I messed with something. Can any one tell me what these are, what they do, and wether or not I need them or not. I would like to do what I said and get rid of them if this is would be issue free, but in the case that this is WOULD cause an issue, Im seeking council. Please Only respond if you have answers Thank you all!
(Passenger side manifold)
(Driver side manifold)
These three photos show where the tubing leads. I've highlighted in red, the tubes (partially silicon, but steel at the connection to the manifold) that connect to both manifolds and to the circular 'thing' near the front of the engine bay. Again please if you have any info let me know! If you don't have any info, don't respond unless you have something to add or you also have information.
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(Passenger side manifold)
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(Driver side manifold)
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These three photos show where the tubing leads. I've highlighted in red, the tubes (partially silicon, but steel at the connection to the manifold) that connect to both manifolds and to the circular 'thing' near the front of the engine bay. Again please if you have any info let me know! If you don't have any info, don't respond unless you have something to add or you also have information.