4 Bar map sensor ok for 10 psi?
#1
Junior Member
Thread Starter
Join Date: Oct 2008
Location: Ipswich, England
Posts: 15
Likes: 0
Received 0 Likes
on
0 Posts
4 Bar map sensor ok for 10 psi?
The turbo kit im fitting to my b16 is one that someone has built up themselves. It came with what he says is a 4 bar map sensor, im planning on running 10 psi when its running, will this sensor work for 10 psi or is 10 too low for it? I was thinking maybe it doesnt matter because when its mapped it will be set with this sensor and can be compensated for but not too sure.
Also is there anyway i can test it or confirm that it is a 4 bar sensor?
Thanks guys
Also is there anyway i can test it or confirm that it is a 4 bar sensor?
Thanks guys
#2
The map sensor if it is a real 4 bar is good to over 35psi, a stock map sensor will work for 10 psi, what kind of map sensor is it and does it replace the stock one, and go into the oem location???
#5
Mr. Badwrench
Join Date: May 2002
Location: stranger in a strange land
Posts: 14,146
Likes: 0
Received 2 Likes
on
2 Posts
if you plan on running 10 psi safely, please dont try to do it on a stock map sensor, if you want your boost cut to work properly.
#6
Junior Member
Thread Starter
Join Date: Oct 2008
Location: Ipswich, England
Posts: 15
Likes: 0
Received 0 Likes
on
0 Posts
any idea what the difference in the resolution would be between the different types? the sensor fits where the oem one goes, it looks identical but I know its not stock because when i fitted it to my car it stalled. I have no original packaging so i have no info on it.
Trending Topics
#8
Mr. Badwrench
Join Date: May 2002
Location: stranger in a strange land
Posts: 14,146
Likes: 0
Received 2 Likes
on
2 Posts
it is like this. maps read from .1 to 5 volts. on a 2.5 bar (im rounding numbers up) you cut .1 to 5 volts 25 times. on the 4 bar, you cut the .1 to 5 volts 40 times.
with that said, 2.5 volts on the 2.5 bar is not the same pressure reading as 2.5 volts on the 4 bar.
i dont know the scaling off of the top of my head.
#9
Honda-Tech Member
Join Date: Nov 2005
Location: CANADA, BC, Canada
Posts: 248
Likes: 0
Received 0 Likes
on
0 Posts
some good info on aftermarket map sensors and resolution. I learned a few things from omniman in this thread, its worthwhile checking out.
https://honda-tech.com/forums/forced-induction-16/stock-map-sensor-2435288/
https://honda-tech.com/forums/forced-induction-16/stock-map-sensor-2435288/
#11
Honda-Tech Member
Been there done that.. My boost cut didn't work properly even though it was set when I was pushing the limits of a stock map. I ended up spiking to 16psi, the cut didnt catch it and my ringlands went.
#12
Honda-Tech Member
Join Date: Jan 2005
Location: b00sting my D16s, SoWis, USA
Posts: 7,015
Likes: 0
Received 7 Likes
on
5 Posts
FWIW, I get the exact same gas milage and drivability wether I use a stock MAP, 2.5bar, 3bar, or a 4bar. I've had them all on the same car.
Only thing that will change drivability is not fully tuning a GM 3bar. There are so many 3rd party producers of it (legal knockoffs), that they differ wildly. Vac and high boost is also not as linear with the GM. The motorola/freescale sensor is supposedly what's in the Hondata/Omni 4bar MAP's, which are very linear, and all the same.
Only thing that will change drivability is not fully tuning a GM 3bar. There are so many 3rd party producers of it (legal knockoffs), that they differ wildly. Vac and high boost is also not as linear with the GM. The motorola/freescale sensor is supposedly what's in the Hondata/Omni 4bar MAP's, which are very linear, and all the same.
Thread
Thread Starter
Forum
Replies
Last Post
Btothe3rdDegree
Forced Induction
2
07-13-2004 10:49 AM