38 Reviews

GM Stage 1 Sensors

SKU: ZZ-GMST1S

$114.99 Sale price

Regular price $114.99

Replace your factory MAP sensors that blow out when you turn up your boost with these GM 3 bar map sensors in just a few minutes!

PCM file update required, See "Option 2" on our ZZP LNF 1.0 PCM page.

LNF only!

Includes:

  • (2) GM 3.3 bar map sensors (good to 33psi)
  • (2) O-rings
  • (2) GM Plug and Play wire harnesses

ECU Programming

In HP Tuners, set the MAP sensor linear to 65.89, MAP sensor offset to -6.35, Boost sensor linear to 65.89, and Boost sensor offset to -6.35.

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Ecotec

Replace your factory MAP sensors that blow out when you turn up your boost with these GM 3 bar map sensors in just a few minutes!

PCM file update required, See "Option 2" on our ZZP LNF 1.0 PCM page.

LNF only!

Includes:

  • (2) GM 3.3 bar map sensors (good to 33psi)
  • (2) O-rings
  • (2) GM Plug and Play wire harnesses

ECU Programming

In HP Tuners, set the MAP sensor linear to 65.89, MAP sensor offset to -6.35, Boost sensor linear to 65.89, and Boost sensor offset to -6.35.

Customer Reviews

4.9 Based on 38 Reviews
5 ★
92% 
35
4 ★
8% 
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TV
11/11/2019
Tyler V.
United States

GM Stage 1

Ordered these along with my LNF PCM and at first received two identical sensors, both with 3 pin connectors. Emailed ZZP and they said that they would fix it for me. The return shipping stuff ended up going into my junk folder and I was confused for a few days but after clearing all of that up, ZZP helped me out and made sure to get me taken care of. The top sensor on the intake manifold is super easy to do, however, the lower charge pipe one needs to be shaved down to fit correctly and I ended up just taking out the lower charge pipe in order to see what I was doing. Not too hard just took a little time and work. Overall I am happy with these sensors knowing that I’m safe at high boost!

AB
09/27/2019
Alberto B.
United States United States

Great

No problems at all

LT
07/25/2019
Luis T.
United States United States

Night and day difference

The sensor is kind of a pita to install on the lower charge pipe, but other than that, it's simple and straightforward, and the pigtails make it all the more easier to install!

JK
07/01/2019
Jacob K.

Easy install, preventative maintenance item, AWESOME harnesses!

Easy install and preventative maintenance item if you ask me, the stock sensors failed twice in the short time I have had the car (No tune/ stock until now). The only thing I had an issue with was finding the correct O-ring for these to fit into the stock locations. The provided "Green" Bosch O-rings were too small and created a nasty charge air leak. Ordered some #202 Viton o-rings which corrected the issue. Would be good to include a basic set of instructions so new or budding mechanics could do it themselves and possibly supply the correct o-rings as well. The harness is a life saver for a DIY garage mechanic makes things easy and whether tight which is essential if you live any where near salted roads.

DD
05/01/2019
Drew D.

Replacement

These sensors are a perfect factory stage 1 sensor replacement

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