MINI2

PW51CAR · Dec 22nd, 2003, 09:58 PM

Can anyone tell me if the Cooper S has a 2 or a 3 bar map sensor?

Andy@Ross-Tech.com · Dec 24th, 2003, 07:26 PM

Quote: Originally Posted by PW51CAR

Can anyone tell me if the Cooper S has a 2 or a 3 bar map sensor?

I've seen over 2000 mbar absolute, so I'm gonna say 2.5 or 3.0 bar.

PW51CAR · Dec 30th, 2003, 09:27 AM

Ah good stuff, means I wont need a sigcon then

thanks Andy

Andy@Ross-Tech.com · Dec 30th, 2003, 02:24 PM

Quote: Originally Posted by PW51CAR

Ah good stuff, means I wont need a sigcon then

thanks Andy

I just took a look at the raw voltage at ambient (~1000 mbar absolute) and at idle (~15.5 in. Hg).

Ambient (1030 mbar absolute): 1.92 V
Idle (500 mbar absolute): 0.84V

If that relationship is pretty linear, I'd expect the MAP sensor to be a 2.5 bar sensor that will only max out when boost gets to about 22 psi of gauge pressure.

bluemcs · Dec 30th, 2003, 09:09 PM

Quote: Originally Posted by Andy@Ross-Tech.com

If that relationship is pretty linear, I'd expect the MAP sensor to be a 2.5 bar sensor that will only max out when boost gets to about 22 psi of gauge pressure.

That should be just about where a 22% pulley puts it.

R U going to be the first Andy?

Dom · Dec 30th, 2003, 09:18 PM

is that 22psi of intake pressure or am i being dumb?

Andy@Ross-Tech.com · Dec 30th, 2003, 09:35 PM

Quote: Originally Posted by Dom

is that 22psi of intake pressure or am i being dumb?

Not dumb at all, that's exactly what I mean. The MAP sensor is the black rectangle in the center bottom of this pic:

It is mounted right on the intake manifold.

Dom · Dec 30th, 2003, 09:50 PM

there's a first time for everything

what's the standard pressure then? I always thought it was quite low

Andy@Ross-Tech.com · Dec 31st, 2003, 03:30 AM

Quote: Originally Posted by Dom

there's a first time for everything

what's the standard pressure then? I always thought it was quite low

Here's the stock boost for my MCS (compared to the stock boost for a 150-hp VW 1.8T):

PW51CAR · Dec 31st, 2003, 08:36 AM

Nice, you have alot of info on the mcs andy.. Looks like I will be needing a sigcon after all if its cut off is 22psi....

jlm · Dec 31st, 2003, 10:38 AM

there is a second pressure sensor hidden between the fuse box and the head under a bracket. It has a tube connected to the intake connector between the throttle body and the blower intake, this zone would read ambient-vacuum, but never >0psi.

Andy@Ross-Tech.com · Dec 31st, 2003, 04:21 PM

Quote: Originally Posted by PW51CAR

Nice, you have alot of info on the mcs andy.. Looks like I will be needing a sigcon after all if its cut off is 22psi....

What are you planning to do to get 7 more psi?

PW51CAR · Jan 1st, 2004, 01:48 AM

Planning on fitting a Rotrex supercharger quite soon

Andy@Ross-Tech.com · Jan 1st, 2004, 05:32 AM

Quote: Originally Posted by PW51CAR

Planning on fitting a Rotrex supercharger quite soon

Cool.

I look forward to reading all about it. Twin-screw superchargers are supposed to deliver much better efficiency than Roots-type blowers.

Dec 22nd, 2003, 09:58 PM	#1
PW51CAR MINI2 Regular Join Date: Jul 2003 Location: Glasgow Local Time: 10:41 PM Posts: 63 Offline	Map Sensor Can anyone tell me if the Cooper S has a 2 or a 3 bar map sensor?

Dec 24th, 2003, 07:26 PM	#2 (permalink)
Andy@Ross-Tech.com MINI2 Master Join Date: Oct 2002 Location: Lansdale, PA Local Time: 06:41 PM Posts: 1,338 Offline	Quote: Originally Posted by PW51CAR Can anyone tell me if the Cooper S has a 2 or a 3 bar map sensor? I've seen over 2000 mbar absolute, so I'm gonna say 2.5 or 3.0 bar. '03 MCS The Unofficial MINI 1/4 Mile Dragracing Database

Dec 30th, 2003, 02:24 PM	#4 (permalink)
Andy@Ross-Tech.com MINI2 Master Join Date: Oct 2002 Location: Lansdale, PA Local Time: 06:41 PM Posts: 1,338 Offline	Quote: Originally Posted by PW51CAR Ah good stuff, means I wont need a sigcon then thanks Andy I just took a look at the raw voltage at ambient (~1000 mbar absolute) and at idle (~15.5 in. Hg). Ambient (1030 mbar absolute): 1.92 V Idle (500 mbar absolute): 0.84V If that relationship is pretty linear, I'd expect the MAP sensor to be a 2.5 bar sensor that will only max out when boost gets to about 22 psi of gauge pressure. '03 MCS The Unofficial MINI 1/4 Mile Dragracing Database

Dec 30th, 2003, 09:35 PM	#7 (permalink)
Andy@Ross-Tech.com MINI2 Master Join Date: Oct 2002 Location: Lansdale, PA Local Time: 06:41 PM Posts: 1,338 Offline	Quote: Originally Posted by Dom is that 22psi of intake pressure or am i being dumb? Not dumb at all, that's exactly what I mean. The MAP sensor is the black rectangle in the center bottom of this pic: It is mounted right on the intake manifold. '03 MCS The Unofficial MINI 1/4 Mile Dragracing Database

Dec 31st, 2003, 03:30 AM	#9 (permalink)
Andy@Ross-Tech.com MINI2 Master Join Date: Oct 2002 Location: Lansdale, PA Local Time: 06:41 PM Posts: 1,338 Offline	Quote: Originally Posted by Dom there's a first time for everything what's the standard pressure then? I always thought it was quite low Here's the stock boost for my MCS (compared to the stock boost for a 150-hp VW 1.8T): '03 MCS The Unofficial MINI 1/4 Mile Dragracing Database

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Dec 30th, 2003, 09:27 AM	#3 (permalink)
PW51CAR MINI2 Regular Join Date: Jul 2003 Location: Glasgow Local Time: 10:41 PM Posts: 63 Offline	Ah good stuff, means I wont need a sigcon then thanks Andy

Dec 30th, 2003, 09:09 PM	#5 (permalink)
bluemcs MINI2 Regular Join Date: Jan 2003 Location: East Local Time: 05:41 PM Posts: 77 Offline	Quote: Originally Posted by Andy@Ross-Tech.com If that relationship is pretty linear, I'd expect the MAP sensor to be a 2.5 bar sensor that will only max out when boost gets to about 22 psi of gauge pressure. That should be just about where a 22% pulley puts it. R U going to be the first Andy?

Dec 30th, 2003, 09:18 PM	#6 (permalink)
Dom Test thread infiltrator Join Date: Oct 2001 Location: Swindon Local Time: 11:41 PM Posts: 8,543 Offline	is that 22psi of intake pressure or am i being dumb?

Dec 30th, 2003, 09:50 PM	#8 (permalink)
Dom Test thread infiltrator Join Date: Oct 2001 Location: Swindon Local Time: 11:41 PM Posts: 8,543 Offline	there's a first time for everything what's the standard pressure then? I always thought it was quite low

Dec 31st, 2003, 08:36 AM	#10 (permalink)
PW51CAR MINI2 Regular Join Date: Jul 2003 Location: Glasgow Local Time: 10:41 PM Posts: 63 Offline	Nice, you have alot of info on the mcs andy.. Looks like I will be needing a sigcon after all if its cut off is 22psi....

Dec 31st, 2003, 10:38 AM	#11 (permalink)
jlm MINI2 Master Join Date: Aug 2002 Location: ny,ny Local Time: 05:41 PM Posts: 1,083 Offline	there is a second pressure sensor hidden between the fuse box and the head under a bracket. It has a tube connected to the intake connector between the throttle body and the blower intake, this zone would read ambient-vacuum, but never >0psi. john

Dec 31st, 2003, 04:21 PM	#12 (permalink)
Andy@Ross-Tech.com MINI2 Master Join Date: Oct 2002 Location: Lansdale, PA Local Time: 06:41 PM Posts: 1,338 Offline	Quote: Originally Posted by PW51CAR Nice, you have alot of info on the mcs andy.. Looks like I will be needing a sigcon after all if its cut off is 22psi.... What are you planning to do to get 7 more psi? '03 MCS The Unofficial MINI 1/4 Mile Dragracing Database

Jan 1st, 2004, 01:48 AM	#13 (permalink)
PW51CAR MINI2 Regular Join Date: Jul 2003 Location: Glasgow Local Time: 10:41 PM Posts: 63 Offline	Planning on fitting a Rotrex supercharger quite soon

Jan 1st, 2004, 05:32 AM	#14 (permalink)
Andy@Ross-Tech.com MINI2 Master Join Date: Oct 2002 Location: Lansdale, PA Local Time: 06:41 PM Posts: 1,338 Offline	Quote: Originally Posted by PW51CAR Planning on fitting a Rotrex supercharger quite soon Cool. I look forward to reading all about it. Twin-screw superchargers are supposed to deliver much better efficiency than Roots-type blowers. '03 MCS The Unofficial MINI 1/4 Mile Dragracing Database

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