Jay_Sensing

About to go get tuned one last time with the new setup and I am curious about this. I have a stock map in the car right now wich is safe up to about 11 lbs or so I have read. I happen to have a new 2bar from a granny national laying around though. Before I go back to the dyno, I am wondering what is the max it can read before going blind. I have been all through the conversion charts online and it seems to me it would read just under 16psi before it went blind. That would be fine with me as I don't think I am going to have to push past 12 or 13 to achieve what I am wanting to make with this car BUT......... After searching through 261 map sensor threads in the archives, I have found on guy who says 12 lbs is the max, and several who say 20 lbs is the max.

Does anyone have a definate answer before I do this? I am not trying to make enough power to roast the tires in 3 from a roll, I just want to make somewhere in the area of 350-360 and it could take upwards of 14-15 lbs, depending on the efficiency of my new setup so I want to be sure I have everything in a line before I drop the cash on dyno time and the tuners time.

Thanks guys.

ramrod

i know that the 2bar's can read up to 14.7psi.

i forgot where i saved this to my notepad from, ill try to find the website later:

2 Bar MAP Sensors are used on forced induction vehicles(Turbo & Supercharged). They can measure up to 2x the apmospheric pressure(29.4psi), so that means it can measure up to 14.7psi boost(the atmosphere is 14.7psi + 14.7psi from the turbo/supercharger).

juka

Just over 14psi MAP

Check this site:
http://www.robietherobot.com/storm/mapsensor.htm

Jay_Sensing

Thanks for the link and the info guys. That makes sense to me.

I am going to go ahead and use it and see where we can get for now. My total setup is fairly efficient so I should be able to see close to my goals with 14.7 lbs. Maybe even break them.

Now if I can just get my damn boost controller figured out I would be golden. If it didn't have the ability to switch between wastegate spring, low, and high boost on the fly, I would have stuck with a manual because this Profec is kicking my *** with the gain and set gain settings making it climb too fast (really responsive turbo) and putting the BC into protection mode although I never come close to going over what my warning is set at.


Thanks again for the info.

Pay2play killa

hold up

look into the motorolla 2.5 bar before you go get a gm 2 bar. a gm 2 bar isn't really much of an upgrade over a stock map

Jay_Sensing

Already have, it's what I really want but my tuner hasn't recieved his from his distributer yet.

I was going to wait BUT, with the rebuild on the car, I am running kinda crappy with the old tune and drinking gas like a pro so I am just going to use this for now, it "should" accomplish my goals.

boostedcivicsir

just an fyi the reason the gn's only had a 2 bar map is because it was used as a sender for the boost gauge. thats about it. it only read up to like 13 psi before it pegged. thats why you can fun more than 14.7 psi on a gn. i used to run 30 psi.

Jay_Sensing

I see, that would explain why when I searched on the website, it also had a MAF listing for GN's and TTA's.

I really don't know a lot about them, they are one of the few domestic muscle cars I have never had.

Thanks for the info man.

boostedcivicsir

if you ever want to learn about any thing gn t type, go to http://www.gnttype.org great site.