# GM 3.3 Bar Map Sensor **URL:** \ **Category:** NYSpeed Automotive\ **Created:** [July 14, 2005, 11:25pm UTC](https://forums.speedlife.net/t/gm-3-3-bar-map-sensor/823 "2005-07-14T23:25:03Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![RuBiCaNT](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/rubicant/32/7622_2.png) [@RuBiCaNT](https://forums.speedlife.net/u/RuBiCaNT)\ **Post date:** [July 14, 2005, 11:25pm UTC](https://forums.speedlife.net/t/gm-3-3-bar-map-sensor/823/1 "2005-07-14T23:25:03Z")
I found this on another forum but it might be useful to you boost freaks out there… > **[turbo\_pressure\_sensors.pdf](https://www.powerandsignal.com/docs/Products/turbo_pressure_sensors.pdf)** > > 557.25 KB The connector is a tad different than the GM 3bar but this will max out at around 38psi. FYI! ---
**Author:** ![RuBiCaNT](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/rubicant/32/7622_2.png) [@RuBiCaNT](https://forums.speedlife.net/u/RuBiCaNT)\ **Post date:** [July 14, 2005, 11:29pm UTC](https://forums.speedlife.net/t/gm-3-3-bar-map-sensor/823/2 "2005-07-14T23:29:41Z")
BTW, GM Parts Direct has this for around $50… ---
**Author:** ![Jskrapper](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/jskrapper/32/7570_2.png) [@Jskrapper](https://forums.speedlife.net/u/Jskrapper)\ **Post date:** [July 15, 2005, 5:37am UTC](https://forums.speedlife.net/t/gm-3-3-bar-map-sensor/823/3 "2005-07-15T05:37:07Z")
Damn. I was planning on running 45 psi @ the track tonight. Of course I already bought my 3 bar. Oh well, I am not going to be needing anything like that for about five years. ---
**Author:** ![RuBiCaNT](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/rubicant/32/7622_2.png) [@RuBiCaNT](https://forums.speedlife.net/u/RuBiCaNT)\ **Post date:** [July 15, 2005, 6:14am UTC](https://forums.speedlife.net/t/gm-3-3-bar-map-sensor/823/4 "2005-07-15T06:14:14Z")
> [@Jskrapper](#): > > Damn. I was planning on running 45 psi @ the track tonight. > > Of course I already bought my 3 bar. Oh well, I am not going to be needing anything like that for about five years. Me either but it’s interesting nonetheless. BTW Skrapper, I bought the ATP turbo weatherpack connector and it rocks!! You gotta supply your own wire though… ---
**Author:** ![neurokinetik](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/neurokinetik/32/7270_2.png) [@neurokinetik](https://forums.speedlife.net/u/neurokinetik)\ **Post date:** [July 21, 2005, 10:03pm UTC](https://forums.speedlife.net/t/gm-3-3-bar-map-sensor/823/5 "2005-07-21T22:03:11Z")
Cummins uses a 3.5 bar with an extra temperature output… 😉 Might want to look into that one. ---
**Author:** ![HotRodKid](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/hotrodkid/32/7609_2.png) [@HotRodKid](https://forums.speedlife.net/u/HotRodKid)\ **Post date:** [July 21, 2005, 10:16pm UTC](https://forums.speedlife.net/t/gm-3-3-bar-map-sensor/823/6 "2005-07-21T22:16:34Z")
> [@RuBiCaNT](#): > > but this will max out at around 48psi. FIXED ! 3.3 x 14.7 = 48.51 😛 ---
**Author:** ![RuBiCaNT](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/rubicant/32/7622_2.png) [@RuBiCaNT](https://forums.speedlife.net/u/RuBiCaNT)\ **Post date:** [July 22, 2005, 5:29am UTC](https://forums.speedlife.net/t/gm-3-3-bar-map-sensor/823/7 "2005-07-22T05:29:50Z")
> [@HotRodKid](#): > > [QUOTE=RuBiCaNT] but this will max out at around 48psi. FIXED ! 3.3 x 14.7 = 48.51 :P[/QUOTE] You have to take into account the atmospheric pressure of 14.7 so it’s really 33psi but it has been known and tested to go as high as 39psi. ---
**Author:** ![HotRodKid](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/hotrodkid/32/7609_2.png) [@HotRodKid](https://forums.speedlife.net/u/HotRodKid)\ **Post date:** [July 22, 2005, 5:40am UTC](https://forums.speedlife.net/t/gm-3-3-bar-map-sensor/823/8 "2005-07-22T05:40:54Z")
good point … i typed that thinking _3.3 bar ABOVE atmospheric_ … but obviously a stock map sensor for an NA car would be like a 1 bar map, so a 3.3 would be 2.3 bar above atmospheric zapped by my own not stopping to think