How to remove MAP sensor on a LS3 with a Whipple - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

hesster · 08-06-2023, 07:51 AM

Researched the forums and find different suggested locations. I need to change it as part of a new tune on my 2010 SS LS3 and Whipple.
I know it is on the back of the S/C, but good Lord how do you get to it? I can't even get a tiny mirror back there to look for it.
I can get my hand back there from the Passenger Side, as I was able to install a Boost Gage that I tee'd into the Whipple Vacuum Nipple. So I am assuming the MAP must be in that neighborhood?
I do not want to take the Bower apart obviously.
Driver Side, Passenger Side, bolt size?

Anyone who has conquered this I would appreciate your input!

Batmanntexas · 08-06-2023, 08:25 AM

The MAP is bolted to the back of the lower intake manifold, pretty much in the center. On mine, the MAP is secured with a socket head cap screw, requiring a 5/32 or 1/8" allen key, pic attached for reference.

I have not tried replacing it with the blower installed, so I can't provide any insight on that endeavor...

hesster · 08-06-2023, 10:01 AM

Awesome Brother - that points me in the right direction. Now gonna figure out how to shrink my big hands

CamaroCracka · 08-06-2023, 10:43 AM

One of the best tools I bought last year was a $100 borescope off Amazon. I was able to use it for what I bought it for the same week it arrived and it has come in very handy over half a dozen times since.

hesster · 08-10-2023, 04:02 PM

Some advice - do not rock or pry it out, you will only easily brake the nipple off as I did. Clear out as much "stuff in the way" such as fuel lines in the rear, harness's, etc. Try to pull it straight out, it probably will not budge cause you have no leverage.
I had to pull the Blower off anyway since I am changing injectors, but that is a big job. There it sat, a little chunk of nipple and "O" ring just mocking me, and at that point it is absurdly easy to pop out.

08-06-2023, 07:51 AM	#1
hesster Drives: '10 C5 SS, '77 Bandit T/A Join Date: Dec 2015 Location: Michigan Posts: 633 View My Garage	How to remove MAP sensor on a LS3 with a Whipple Researched the forums and find different suggested locations. I need to change it as part of a new tune on my 2010 SS LS3 and Whipple. I know it is on the back of the S/C, but good Lord how do you get to it? I can't even get a tiny mirror back there to look for it. I can get my hand back there from the Passenger Side, as I was able to install a Boost Gage that I tee'd into the Whipple Vacuum Nipple. So I am assuming the MAP must be in that neighborhood? I do not want to take the Bower apart obviously. Driver Side, Passenger Side, bolt size? Anyone who has conquered this I would appreciate your input! Attached Images

08-06-2023, 08:25 AM	#2
Batmanntexas Drives: 2012 Camaro SS (2SS) Join Date: Aug 2012 Location: Stafford, VA Posts: 1,372 View My Garage	The MAP is bolted to the back of the lower intake manifold, pretty much in the center. On mine, the MAP is secured with a socket head cap screw, requiring a 5/32 or 1/8" allen key, pic attached for reference. I have not tried replacing it with the blower installed, so I can't provide any insight on that endeavor... Attached Images __________________ 745RWHP/634RWTQ on 93 @ 10psi 806/676 on E85 @ 10psi COTW 9/8/14

08-06-2023, 10:43 AM	#4
CamaroCracka Drives: 2010 Turbo LS3 Join Date: Dec 2009 Location: Palm Bay, FL Posts: 2,734	One of the best tools I bought last year was a $100 borescope off Amazon. I was able to use it for what I bought it for the same week it arrived and it has come in very handy over half a dozen times since. __________________ 2010 SS - On3 kit with downpipe cutout, CTR 78/80, CompCam 239/251 620/632 122+4, E85, Z28 suspension and ZL1 diff with Outlaw axles. Gen6 ZL1/1LE brakes. 2011 Vert - 416/w 230/236 .612/.602 115lsa, 1LE suspension w/32mm rear bar. Z28 diff. ZL1 brakes.

08-06-2023, 10:01 AM	#3
hesster Drives: '10 C5 SS, '77 Bandit T/A Join Date: Dec 2015 Location: Michigan Posts: 633 View My Garage	Awesome Brother - that points me in the right direction. Now gonna figure out how to shrink my big hands

08-10-2023, 04:02 PM	#5
hesster Drives: '10 C5 SS, '77 Bandit T/A Join Date: Dec 2015 Location: Michigan Posts: 633 View My Garage	Some advice - do not rock or pry it out, you will only easily brake the nipple off as I did. Clear out as much "stuff in the way" such as fuel lines in the rear, harness's, etc. Try to pull it straight out, it probably will not budge cause you have no leverage. I had to pull the Blower off anyway since I am changing injectors, but that is a big job. There it sat, a little chunk of nipple and "O" ring just mocking me, and at that point it is absurdly easy to pop out.