2.5bar map sensor

1. beardyboy Infrequent Poster Joined: Mar 2011 essex Posts: 157 2001 saxo vtr turbo

   #1 1st July 2011, 11:14

   my car is currently running a standard map sensor with the mf2 wired into it....witch obviously reads boost and puts engine into safe mode..
   
   what 2.5bar map sensor do i need? and how do i wire it up?
   
   any1 got any diagrams? or a rough idea?
2. Jungle Established Member Joined: Sep 2008 Sheffield Posts: 1206 106 Rallye Turbo

   #2 1st July 2011, 15:52

   I used a random GM one i think, was about a fiver off the bay
3. beardyboy Infrequent Poster Joined: Mar 2011 essex Posts: 157 2001 saxo vtr turbo

   #3 1st July 2011, 16:31

   you got any info in how u wired it up?
4. user_35090 Established Member Joined: Jun 2009 west mids (dudley) Posts: 1201 cammed 106 flatty

   #4 1st July 2011, 18:58

   I cant find the link to ebay which one i bought i forget now, think it was an rs turbo one though.
   
   As for wiring it up. if your not running sigcon, then take a +5v supply from either the original map sensor or throttle position sensor to the new MAP sensor. then a 0v wire from the old map sensor or tps. and then create your own wire, from the raw signal on the NEW map sensor (to find out which ones which use a multi meter when the new MAP is connected to the old MAP sensor's plug.) one will read +5v the other 0v and the other will vary on tick over, more rpm a higher reading shall be seen. thats the raw signal wire.
   
   so create your own small plug, take the raw signal wire, directly to the blue wire on the mf2. and hey presto it shall fire petrol in when it sees boost.
   
   but remember theirs two white wires on the mf2 unit. one is the earth. the other is something different. i got them mixed up and wired the none earth wire to an earthing point. the mf2 wont work correct if the white wire (earth) is connected.
   
   had me baffled for atleast a day lol
5. user_35090 Established Member Joined: Jun 2009 west mids (dudley) Posts: 1201 cammed 106 flatty

   #5 1st July 2011, 18:59

   also id recommend this stuff, as it will keep things tidy
   http://cgi.ebay.co.uk/ws/eBayISAPI.d...=STRK:MEWNX:IT
6. beardyboy Infrequent Poster Joined: Mar 2011 essex Posts: 157 2001 saxo vtr turbo

   #6 1st July 2011, 19:49

   cheers stevo1600
   
   no not using a sigcon, hopefully i can aviod it, the mf2 controller is already wired in to the standard map sensor on the inlet with the orange and blue wire iirc. witch was done by the previous owner.
   
   is this the map sensor people use?
   
   http://www.ebay.co.uk/itm/2-5-bar-MA...item20bab62f1f
   
   ^^ this map sensor only has 3 pins and the standard vtr has 4, how do i go about the spare wire?
   
   
   hopefullly will have a progress thread up soon
7. beardyboy Infrequent Poster Joined: Mar 2011 essex Posts: 157 2001 saxo vtr turbo

   #7 4th July 2011, 11:16

   anyone?