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AT Horsepower Restriction

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Old 08-07-2009 | 03:46 PM
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Originally Posted by RickA
Yup, our cars have VTEC
i said KINDA they have the same feeling atleast thats what my friends that drive v-tec cars say
Old 08-07-2009 | 03:46 PM
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Although i'm an MT owner I would really love to see a 6port AT owner fit a decent turbo and get some good numbers with it . When is someone going to step up ???????
Old 08-07-2009 | 03:54 PM
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Originally Posted by shaunv74
Do you just make this stuff up?

Edit: Phil Answered already.

Also the reason is not just RPM but because it only has 4 ports instead of 6 and can't take in as much air as the MTs.

The fastest 8's out there are 8's with 20Bs in them. But the MT turbos are much faster than the AT turbos. Not trying to flame AT owners. Just trying to set the record straight and stop the spread of mis-information.
i wasnt talking about rx-8 automatics i was talking about automatics in general the fastes cars out there arent manual tranmissions look it up.
Old 08-07-2009 | 04:50 PM
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Originally Posted by rx8phase1
the tranmsission on the auto cant take 9,000 rpm w/out damaging it so pretty much it's the ecu we can only go to 7,500 rpm instead of 9 and thats where the rotary engine really wakes up.
Yes it can! Get an Accessport. My car (4 Port AT) does 9000 rpm every day.

Originally Posted by Phil's 8
You have it, a quick relatively inexpensive way to gain speed is Nitrous. If you do choose it, the first rule is stay away from Easy_E1 and his posts on Nitrous. If you don't you'll be investing in the same manifold factory that he presently is . There are so many different mods that are available that something out there should tickle your fancy and help with your desire to improve the performance of your 8
I heard that Phil! Someone has to be the test pilot here.
Early on usage and not knowing the fine line of operation has made me a wiser man. I haven't blown a manifold in 7 months. And the two manifolds I blew up, I know what happened and how NOT to repeat that process again.

You can make a 4 Port as fast and faster (like mine) than the 6 Port MT.
And there is nothing weak about the AT transmission.
Old 08-07-2009 | 04:52 PM
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Originally Posted by rx8phase1
i said KINDA they have the same feeling atleast thats what my friends that drive v-tec cars say
And im saying we do have it... it's engraved on the camshafts, right above the forged pistons
Old 08-07-2009 | 05:13 PM
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From: Chino CA.
Originally Posted by Easy_E1
Yes it can! Get an Accessport. My car (4 Port AT) does 9000 rpm every day.



I heard that Phil! Someone has to be the test pilot here.
Early on usage and not knowing the fine line of operation has made me a wiser man. I haven't blown a manifold in 7 months. And the two manifolds I blew up, I know what happened and how NOT to repeat that process again.

You can make a 4 Port as fast and faster (like mine) than the 6 Port MT.
And there is nothing weak about the AT transmission.
does it shift right? and how many miles have u gone in that transmission i know u can do 8,000rpm w no prob but does shifting @ 9rpm damage it in the long run?
Old 08-07-2009 | 05:18 PM
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Originally Posted by RickA
And im saying we do have it... it's engraved on the camshafts, right above the forged pistons
yup u gotta love v8 piston engine w vtec did u know the 8 in rx-8 is cuz it has a v8 engine lol
Old 08-07-2009 | 05:19 PM
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Originally Posted by rx8phase1
yup u gotta love v8 pison engine w vtec did u know the 8 in rx-8 is cuz it has a v8 engine lol
I wish my brain could comprehend your sentence(s)
Old 08-07-2009 | 09:14 PM
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Originally Posted by Phil's 8


Your choice of words lead me to believe that you were ashamed of it. Glad to see that you are pleased with it. You know the reason I purchased this car was it's looks, and it's cornering ability. If I had wanted speed I would have just purchased a Shelby.
That's the same exact reason I bought my 8.
Old 08-07-2009 | 09:59 PM
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IDK if we are talking about just enjoying the AT 8's or gaining more power from a inexpensive habbit for certain parts. I think there are ways of getting that massive power but at what cost and especially out of the RENESIS. When you have companies like Greddy, Pettit Racing, Esmeril etc, There should be no worries for power it will come in time but for now if anyone is really craving that extra power just do a swap lol but stay Rotary all the way and you can still keep the auto tranny. What I'm basically saying is that for those of you who actually put on their thinking caps will find that this sh*t takes time and money out the ***!

LMFAO

Just a thought.


Ju

Last edited by bhop; 08-08-2009 at 05:36 PM.
Old 08-07-2009 | 10:04 PM
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Originally Posted by Easy_E1
Yes it can! Get an Accessport. My car (4 Port AT) does 9000 rpm every day.




You can make a 4 Port as fast and faster (like mine) than the 6 Port MT.
And there is nothing weak about the AT transmission.

LOL, I hate getting left behind by a MT 8. It is really funny to watch when it happens considering the fact that we have the same car visually.
Old 08-07-2009 | 10:06 PM
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Originally Posted by RickA
I wish my brain could comprehend your sentence(s)

What did he say............?


Lol
Old 08-08-2009 | 09:19 AM
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Originally Posted by Brettus
If you have a six port AT and fit a turbo you should get close to what an MT can do because these motors peak at around 7500 with a turbo .

I think if someone did a decent job of turboing an AT 6 port it would be a real sweet ride and give the AT some real credibility as a sports car ....
Im trying to be the one Brettus. I should have my car back this week. I had an engine rebuild from Tito at Alamo Rotary.. Im about to get Cobbs and I will get the Greddy Kit. Im going to get Pettit to modify my turbo for less exhaust restriction.. So... we'll see what the AT 6port can do.
Old 08-08-2009 | 11:29 AM
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Originally Posted by rx8phase1
i wasnt talking about rx-8 automatics i was talking about automatics in general the fastes cars out there arent manual tranmissions look it up.
Thanks for clarifying. And that has what to do with the discussion?
Old 08-08-2009 | 12:10 PM
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here i come ....... too....
Old 08-08-2009 | 01:47 PM
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Hay everyone who gonna do a turbo install on there AT PM me please just wanna get some ideas as to what direction u guys are going for yours!

Did alot of searching and I'm feeling pretty confident on this. (Props to 09 factor)
Old 08-08-2009 | 04:10 PM
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Originally Posted by rx8phase1
does it shift right? and how many miles have u gone in that transmission i know u can do 8,000rpm w no prob but does shifting @ 9rpm damage it in the long run?
My car has 81,000 miles on it. The AP has been on for 40,000+ miles (9000 redline). And the original transmission. I've changed the fluid twice now and both times it is clear and red. NOT burned at all. It's due to be changed again and I'm going to try Enos AT Fluid this time. It's still clear and red and unburned. I've been using what the dealer recommends so far. And I do the power flush when it's gets changed.

What Phil was referring to is that the transmission will "slip" (rpms shoot up) when engaging 2nd to 3rd gears. Sometimes. It does this regardless of the rpm preset redline. 7500 or 9000.
I've owned two AT 8's (4 speed)and they both did it. If your in second gear for an extended period of time (cruising at say 6000 rpm) and floor it and shift into 3rd. It sometimes does not immediately engage. And the rpm's increase with no load on the trans before it does. It does not do this all the time.

Now Mazda looked at both my cars and had no answer or resolution to this issue. They attribute it to high fluid pressure on the shift solenoid. So I let off the gas a little and it works fine.
That is the only issue I have with the AT transmission and it really isn't that big of a deal.
Old 08-08-2009 | 04:43 PM
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Originally Posted by freaklinkmusic
Im trying to be the one Brettus. I should have my car back this week. I had an engine rebuild from Tito at Alamo Rotary.. Im about to get Cobbs and I will get the Greddy Kit. Im going to get Pettit to modify my turbo for less exhaust restriction.. So... we'll see what the AT 6port can do.
hopefully you are getting a bigger compressor put in there while they are at it ?
The stock Greddy will not light your fire - sorry to say .
Old 08-08-2009 | 05:02 PM
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Originally Posted by shaunv74
Thanks for clarifying. And that has what to do with the discussion?
nothing.but since we were talking about automatics i put it out there lol
Old 08-08-2009 | 05:44 PM
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What Phil was referring to is that the transmission will "slip" (rpms shoot up) when engaging 2nd to 3rd gears. Sometimes. It does this regardless of the rpm preset redline. 7500 or 9000.
I've owned two AT 8's (4 speed)and they both did it. If your in second gear for an extended period of time (cruising at say 6000 rpm) and floor it and shift into 3rd. It sometimes does not immediately engage. And the rpm's increase with no load on the trans before it does. It does not do this all the time.

Now Mazda looked at both my cars and had no answer or resolution to this issue. They attribute it to high fluid pressure on the shift solenoid. So I let off the gas a little and it works fine.
That is the only issue I have with the AT transmission and it really isn't that big of a deal.[/quote]


You are correct my friend. I thought I was the only one having this so called "problem". Now that I think about it, this could be due to not having clutch maybe. Just as long the transmission is not about to break I'm cool.
Old 08-09-2009 | 06:35 PM
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Originally Posted by Brettus
hopefully you are getting a bigger compressor put in there while they are at it ?
The stock Greddy will not light your fire - sorry to say .

i was actually thinking about that. Is MazdaManiacs 3071R still available??

Last edited by freaklinkmusic; 08-09-2009 at 06:38 PM.
Old 08-09-2009 | 06:45 PM
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Originally Posted by freaklinkmusic
i was actually thinking about that. Is MazdaManiacs 3071R still available??
Don't think so . Ask Pettit if they can do an upgrade - that is your cheapest option . If they can't do it send the turbo to BNR for the 60-1 compressor upgrade .
Old 08-09-2009 | 08:21 PM
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Originally Posted by Brettus
Don't think so . Ask Pettit if they can do an upgrade - that is your cheapest option . If they can't do it send the turbo to BNR for the 60-1 compressor upgrade .
ok thanks for the info.. i will try to get that done within 2-3 weeks
Old 08-09-2009 | 11:23 PM
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Originally Posted by freaklinkmusic
i was actually thinking about that. Is MazdaManiacs 3071R still available??
last i heard he stopped providing this kind of upgrade. otherwise i would be all over it. BNR is offering greddy turbo upgrade.
Old 08-10-2009 | 08:40 AM
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Originally Posted by Brettus
Although i'm an MT owner I would really love to see a 6port AT owner fit a decent turbo and get some good numbers with it . When is someone going to step up ???????
Yup - there seems to be a problem getting someone to do it. There are turbos out there that should "light your fire" if someone would try one. DON'T WORRY ABOUT THE TRANNY, it is stronger than you are as long as you take good care of it. I only know of one guy that ruined his a/t and he set out just to do that very thing (it takes all kinds to make up the world).
Originally Posted by bhop
LOL, I hate getting left behind by a MT 8. It is really funny to watch when it happens considering the fact that we have the same car visually.
Not sure what year you have but if your a 6 port your lack of speed has to be due to your pocket book. Even an AP tuned properly with a few bolt-ons will get you even (there is not that much difference in HP in the 6ports). Add Nos and you will make them disappear in your rear view (on the track - street racing is illegal and dangerous ).


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