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MAP sensor on sheet metal intake?

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Old Jun 12, 2025 | 06:36 PM
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Question MAP sensor on sheet metal intake?

I recently bought a cheapo "Sniper" style intake for LS3 heads. It has the ports on the under side of it for the PCV hoses. The previous owner said that there was a way to attach a hose to one of the ports and adapt it to a MAP sensor. Has anyone done this? I have only worked with stock intakes so far, so I don't know how MAP sensors get mounted to these sheet metal intakes. Any ideas or suggestions?
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Old Jun 12, 2025 | 09:50 PM
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Originally Posted by Utinator
I recently bought a cheapo "Sniper" style intake for LS3 heads. It has the ports on the under side of it for the PCV hoses. The previous owner said that there was a way to attach a hose to one of the ports and adapt it to a MAP sensor. Has anyone done this? I have only worked with stock intakes so far, so I don't know how MAP sensors get mounted to these sheet metal intakes. Any ideas or suggestions?
I had a similar intake for a few minutes on my car and what I ended up doing was plugging off the smaller holes and used the big one with like a 3/8 barb or so and ran a line to a vacuum block then connected everything up and it worked but the intake itself made this weird "humming" sound at a very specific cruise RPM
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Old Jul 8, 2025 | 01:00 PM
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throw that intake in the trash and get a stock ls3 intake
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Old Jul 9, 2025 | 04:49 AM
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Originally Posted by 1988montecarloss
throw that intake in the trash and get a stock ls3 intake
Couldn't agree more
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Old Jul 9, 2025 | 10:19 AM
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Originally Posted by utinator
i recently bought a cheapo "sniper" style intake for ls3 heads. it has the ports on the under side of it for the pcv hoses. The previous owner said that there was a way to attach a hose to one of the ports and adapt it to a map sensor. Has anyone done this? I have only worked with stock intakes so far, so i don't know how map sensors get mounted to these sheet metal intakes. Any ideas or suggestions?


why??
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Old Jul 9, 2025 | 02:28 PM
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Originally Posted by Kfxguy
why??
Right. As long as he's been around here you'd think he'd know better...
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Old Jul 31, 2025 | 05:04 PM
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Originally Posted by G Atsma
Right. As long as he's been around here you'd think he'd know better...
Because I have watched too many Richard Holdener videos. LOL! It's going to be on the engine dyno, so it will be easy to swap out and run back-to-back. I'm hoping the Sniper-style intake will make more power and less torque, like in Richard's videos. I have duplicated his builds and results before. Now that I have a 6L80, I don't think I need that much torque. I can't get traction with the LS1, so this 418 is going to be challenging to say the least. I know, my car needs suspension work. I'll work on that later.

I did rig up a hose to a MAP sensor I took off a truck in the junkyard. I don't have any good pics of it right now. I'll try to remember to post one later, if it works.
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Old Aug 1, 2025 | 12:58 AM
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Originally Posted by Utinator
Because I have watched too many Richard Holdener videos. LOL! It's going to be on the engine dyno, so it will be easy to swap out and run back-to-back. I'm hoping the Sniper-style intake will make more power and less torque, like in Richard's videos. I have duplicated his builds and results before. Now that I have a 6L80, I don't think I need that much torque. I can't get traction with the LS1, so this 418 is going to be challenging to say the least. I know, my car needs suspension work. I'll work on that later.

I did rig up a hose to a MAP sensor I took off a truck in the junkyard. I don't have any good pics of it right now. I'll try to remember to post one later, if it works.
If you watched any more than 5 minutes of any Holdener Sniper dyno test you'd know he HATES them. They are CRAP.
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Old Aug 1, 2025 | 08:44 AM
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Yeah, I got the impression he doesn’t really like them, but they consistently make 20+hp more than stock intakes. I wouldn’t use one on a stock cube motor, but that’s not what I have.
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Old Aug 1, 2025 | 09:26 AM
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Originally Posted by Utinator
Yeah, I got the impression he doesn’t really like them, but they consistently make 20+hp more than stock intakes. I wouldn’t use one on a stock cube motor, but that’s not what I have.
They gain ONLY at the top end because of ridiculously short runners. They LOSE hat much or more below that.
They're a one trick pony with more disadvantages than benefits. Yeah, it screams up top but runs like crap everywhere else.
Broaden your horizons
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Old Aug 2, 2025 | 11:05 AM
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Yeah, I'd be ok with that. This engine is going to make more torque than I can use anyway. The short runners will help to manage the torque. I don't think this intake will fir under my hood, so I would probably have to get something else if I decide to use a short runner intake. I'll probably start off with the LS3 intake. If it gets too squirrelly, I can swap to a shorter runner.
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