A/C shut off while under boost....what do you guys think?

A

Alejo_NIN

Member

:

RadonElement.Com

• Aug 4, 2006

• #1

i've had this idea going on for a while...

what if we get a boost-activated switch (can't be vaccum, has to be boost)
and plug it into the intake manifold...then splice the switch into the A/C clutch line (positive, oviously) and have the A/C be turned off while under boost...

Pros and Cons i see out of this..

Pros.

not having to manually turn off the A/C while wanting to gain speed on the highway...so there would not be much lag...

not boosting while A/C on, which increases your chances of blowing up the engine as stated by other forum member here (true??0

Cons.

maybe wearing out A/C compressor clutch??

and maybe wearing off A/C compressor...



any input appreciated


it just sucks to have to reach and turn off the A/C everytime you wanna race a riced out civic... lol...j/k

 

B

Black03MSP

Member

• Aug 4, 2006

• #2

This idea is utilized on WRX's and STi's, however the design there is implemented to cut off the A/C compressor when under full throttle. Just to let you know its been put into cars from the factory. It'd be a good idea, maybe a little tricky to get to work completely as designed. Someone has to be a guinnea pig.

 

J

Jeph

Member

:

2002 ES-T (dead)

• Aug 4, 2006

• #3

Hmmm thats an interesting idea... Too bad my AC doesn't work anyways

 

M

mspHtown

Member

:

MSP 2003.5

• Aug 4, 2006

• #4

how much power do you lose with the a/c on?

 

A

Alejo_NIN

Member

:

RadonElement.Com

• Aug 4, 2006

• #5

i bet you loose close to 15 to 20 HP

i'd be a guinea pig...i just need a boost activated switch that would open a circuit when positve pressure(boost) is applied to it
anyone has a part number for something like this????

are any of the solenoids in the msp already a boost activated cut-off switch??

 

M

mspHtown

Member

:

MSP 2003.5

• Aug 4, 2006

• #6

it would be cool if you could rig this up so htat it cuts the compressor off at a certain boost level. it seems like you would wear it out if it cut off and on all the time.

 

J

j12rock31

Member

:

2003.5 MAZDASPEED PROTEGE

• Aug 4, 2006

• #7

Just to let you know, most new cars have wot (wide open throttle) cut off relays for the a/c, and i believe the mazdaspeed is also supplied with one from the factory.....(RTM)

 

A

Alejo_NIN

Member

:

RadonElement.Com

• Aug 4, 2006

• #8

j12rock31 said:

Just to let you know, most new cars have wot (wide open throttle) cut off relays for the a/c, and i believe the mazdaspeed is also supplied with one from the factory.....(RTM)

Click to expand...

if so, then mine is broken...because it is slow as **** with the A/C on while WOT

 

L

laracroft

Banned

:

MazdaSpeed Protege 2003.5

• Aug 4, 2006

• #9

Alejo_NIN said:

i bet you loose close to 15 to 20 HP

i'd be a guinea pig...i just need a boost activated switch that would open a circuit when positve pressure(boost) is applied to it
anyone has a part number for something like this????

are any of the solenoids in the msp already a boost activated cut-off switch??

Click to expand...

I have just one thing to say about this....

You don't see racers asking the pit crew "you know what'd be great in here? An A/C..."

Besides, don't test the MSP Gods. They have been good to you... leave it at that.

 

A

Alejo_NIN

Member

:

RadonElement.Com

• Aug 5, 2006

• #10

laracroft said:

I have just one thing to say about this....

You don't see racers asking the pit crew "you know what'd be great in here? An A/C..."

Besides, don't test the MSP Gods. They have been good to you... leave it at that.

Click to expand...

you mean is worthless??
stop talking in paraboles

 

N

nate0123

rawr!

:

2023 Mazda CX-30 Turbo Premium Plus, 2019 Hyundai Veloster N

• Aug 5, 2006

• #11

mine cuts off at WOT

 

M

MikeBlueP5

Member

:

2K2 Protege 5 (Sold) now 08 UrbanRunner

• Aug 5, 2006

• #12

in other words dont use the a/c. lol

laracroft said:

I have just one thing to say about this....

You don't see racers asking the pit crew "you know what'd be great in here? An A/C..."

Besides, don't test the MSP Gods. They have been good to you... leave it at that.

Click to expand...

 

J

j12rock31

Member

:

2003.5 MAZDASPEED PROTEGE

• Aug 6, 2006

• #13

Mine definately cuts off at wide open throttle, but under part throttle conditions it will remain on and this is where you will lose power.........
Our cars are equip with a wot cut-off relay along with 99% of all new cars.....

 

M

MrDiggler

Member

Contributor

:

Spicy MSP #1349, '88 323 GTX, '79 10th Ann. T/A, 462 ci 4-spd

• Aug 6, 2006

• #14

I'm almost certain my '88 GTX has a WOT A/C cutoff. My previous GTX did. If they had it back then, I'll bet the MSP has it now. Hmm, will check that out tomorrow.

Also, I doubt the compressor uses 20 hp. I've always heard 7-10. It's more noticeable at part throttle and lower rpm's because your engine is making a lot less hp already.

 

J

j12rock31

Member

:

2003.5 MAZDASPEED PROTEGE

• Aug 7, 2006

• #15

Finally, someone gets it.........(ughdance)

 

Maxx Mazda

Resident Asshole

Contributor

:

Completely Stock P5

• Aug 9, 2006

• #16

Ya, it already cuts off at WOT.