6 port actuation
#1
fart on a friends head!!!
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6 port actuation
I read recently in my little mazda shop manual that 6 port actuation is achieved by AIR pressure from the air pump. NOT back pressure f/ the exhaust like I was told for so many years. Which makes sooo much more sense. Mazdatrix Racing Beat and other sources have told me that it was operated by exhaust back pressure. Anyhow if you guys have any further imput I'd like to hear it before I install my Racing Beat Exhaust and rip out the air pump like they tell me to.
#4
Former Moderator. RIP Icemark.
Yep, as the above answers say...
84-88 non turbos uses exhaust back pressure to open the aux ports
89-91 and 04-05 use air pump pressure through switching soleniods to open the actuators for the aux ports and VDI.
84-88 non turbos uses exhaust back pressure to open the aux ports
89-91 and 04-05 use air pump pressure through switching soleniods to open the actuators for the aux ports and VDI.
Last edited by Icemark; 02-16-04 at 11:48 PM.
#6
Former Moderator. RIP Icemark.
Originally posted by FCPowah
what about 88 turbos? from what ive heard it doesnt matter (in relation to the ports) if you remove the air pump on a turbo.
what about 88 turbos? from what ive heard it doesnt matter (in relation to the ports) if you remove the air pump on a turbo.
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#8
I have a '90 GXL. Being an S5 and not using backpressure to open the 5th and 6th ports, removing the cats would have no affect on them or the VDI as long as I left the air pump alone. Is this correct?
#9
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Originally posted by TKE
I have a '90 GXL. Being an S5 and not using backpressure to open the 5th and 6th ports, removing the cats would have no affect on them or the VDI as long as I left the air pump alone. Is this correct?
I have a '90 GXL. Being an S5 and not using backpressure to open the 5th and 6th ports, removing the cats would have no affect on them or the VDI as long as I left the air pump alone. Is this correct?
#13
fart on a friends head!!!
Thread Starter
Thanks guys for your imput I reallly appreciate it. Now I'm gonna chicken wire my 5th & 6th permanantlt open! I'll let you know how it acts. I use the K.I.S.S. method.
#14
Former Moderator. RIP Icemark.
Originally posted by rotorbrain
Thanks guys for your imput I reallly appreciate it. Now I'm gonna chicken wire my 5th & 6th permanantlt open! I'll let you know how it acts. I use the K.I.S.S. method.
Thanks guys for your imput I reallly appreciate it. Now I'm gonna chicken wire my 5th & 6th permanantlt open! I'll let you know how it acts. I use the K.I.S.S. method.
Nothing like making a car with no torque when starting off at at light even worse
#16
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Has anybody tried wiring them "half" open? Mayeb for normal street driving where low end torque is nice, but with a loss of possible power up high.
If somebody had aux ports that were not operating and are not interested in FIXING THE PROBLEM this may be a nice compromise on low vs high in power..
What do you think Icemark? Has this ever been tested? Or is there soem reason this would not be good? (Maybe the air flow would be really bad etc)
If somebody had aux ports that were not operating and are not interested in FIXING THE PROBLEM this may be a nice compromise on low vs high in power..
What do you think Icemark? Has this ever been tested? Or is there soem reason this would not be good? (Maybe the air flow would be really bad etc)
#17
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Yes, half open would NOT be good at all....
Personally I just took my sleeves out altogether. Didn't look back, made more topend for sure (no dyno sheet unfortunatly..)
Personally I just took my sleeves out altogether. Didn't look back, made more topend for sure (no dyno sheet unfortunatly..)
#18
Originally posted by TKE
^ Can you give me some more info about this?
I would like to go striaght pipe to a cat back, but would also like to keep my 5th and 6th ports, and VDI operational.
^ Can you give me some more info about this?
I would like to go striaght pipe to a cat back, but would also like to keep my 5th and 6th ports, and VDI operational.
#19
Why would the bracket break?
Would straight pipes from the stock manifold to an apexi N1 dual be unbearably loud? Anyone have this set up on a NA car. Would like some comments. Thanks.
Would straight pipes from the stock manifold to an apexi N1 dual be unbearably loud? Anyone have this set up on a NA car. Would like some comments. Thanks.
#20
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Originally posted by pontious
If somebody had aux ports that were not operating and are not interested in FIXING THE PROBLEM this may be a nice compromise on low vs high in power..
If somebody had aux ports that were not operating and are not interested in FIXING THE PROBLEM this may be a nice compromise on low vs high in power..
If you're not interested in fixing problems and improving the condition of your vehicle, sell your 13-18 year old sports car and buy a Honda where nothing breaks. FCs are not young cars and owners that are interested in "ghetto-rigging" and half assing need not apply.
Last edited by JerryLH3; 02-18-04 at 02:32 PM.
#21
Originally posted by TKE
Why would the bracket break?
Would straight pipes from the stock manifold to an apexi N1 dual be unbearably loud? Anyone have this set up on a NA car. Would like some comments. Thanks.
Why would the bracket break?
Would straight pipes from the stock manifold to an apexi N1 dual be unbearably loud? Anyone have this set up on a NA car. Would like some comments. Thanks.
#22
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Originally posted by JerryLH3
I'm not directing this at you, just the hypothetical people in your example.
If you're not interested in fixing problems and improving the condition of your vehicle, sell your 13-18 year old sports car and buy a Honda where nothing breaks. FCs are not young cars and owners that are interested in "ghetto-rigging" and half assing need not apply.
I'm not directing this at you, just the hypothetical people in your example.
If you're not interested in fixing problems and improving the condition of your vehicle, sell your 13-18 year old sports car and buy a Honda where nothing breaks. FCs are not young cars and owners that are interested in "ghetto-rigging" and half assing need not apply.
As far as removing the the sleeves I would never do that. The idea that I would trade some of my precious low end power for high end power I don't normally use dosesn't seem like a good idea.
#23
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Maybe my **** just isn't sensitive enough, but when I took out my sleeves I didn't notice any appreciable difference in 'low-down' power... at all.. Definatly an improvement in the higher RPM regions though..
Maybe it's just me...
Maybe it's just me...
#25
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The NA air pump bracket will break if you are not careful when adjusting belt tension.
Mine was broken by my friendly neighborhood AC shop.
It's just a small aluminum casting.
Mine was broken by my friendly neighborhood AC shop.
It's just a small aluminum casting.
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