Loco1234

What is the difference between the AT & MT once computer is reprogrammed.(custom tuned w/ dyno)

1. Can they both perform the same? Horsepower, Torque, 0-60sec, etc?
if not how big a difference?

2. Is there any advantage of the AT?

3. Any technical differences between the 05 & 06 Shinka? AT or MT?

Basiscally, Theres an Rx-8 Shinka "06" with 180miles on it in the lot next to where I work. It's an AT w/o navi and I really have been looking for a used rx-8 Shinka MT w/ navi but these are a limited production car (hard to find), and they seem to be flexible with the price. flexible enought that I maybe able to get this new 06 shinka for the cost of a used. ($25-26,000)

What do u guys think?
I plan to keep the car for life and fix it up with a turbo kit. Probaly the madzaspeed one.... it seems to have best curve.

VarneyMazda

do not buy an at if your looking for a mt... believe me there is a big difference in power and if you FI the AT youll be about at the power level of a MT.

just my .02

nycgps

iTrader: (1)

1. Nope, never. with the same mod, MT will always walk faster than AT, at least this is the case with this car.
2. Easier to drive in Heavy traffic.
3. 04-05 AT have 4 port motor, 06+ have 6 port, same as MT.

25K aint used car price man, damn 06 with 180 miles ? that means it has been on the lot for almost 2 years. if you really want that one, tell them 20K or no deal.

zoom44

navi was not available in the shinka at all. you will not find one

tajabaho1

actually, with at least as I know, 06-07, ats with mods, can make as much whp as MTs, but our tranny will be fucked much faster though, but if u also mod the tranny(then ofcourse tell us how) possible :D

Loco1234

I totally forgot about the 6-port to 4-port issue. Well I guess that settles it... I need a MT.... In other cars the MT & AT can reach same performance levels with custom computer tune.... and AT may even 0-60 faster.... but not the case here if the AT is a 4port... not the 6-port
Does anyone know if Mazda plans a "performance" version of the RX8 in the future....? perhaps a mazdaspeed version....

Does the Foam injrected front end make a big difference in the Shinka?

Loco1234

i did not Know the Shinka didn't come offered with Navi...
Sales guy told me he sold one almost 2years ago equiped with one.... but i also knew more about rx8 "Shinka" then he did...

To best of my knowledge theres no good way to retrofit a Navi system like stock setup....

Loco1234

How about thoughts on a Forced Induction kit....?
Turbo seems logical with rotary....
I think the Mazdaspeed actually looked like the best boost/hop/tq curves... but you guys are the experts when it comes to these cars.... if you plan to turbo the what kit would u use.... I want it to be streetable....but I have a few street driven cars with of 500rwhp now (2004 mercury marauder) so Im not affraid of power driven on the street...

nycgps

iTrader: (1)

On Mazda papers the injected front can reduce *as much as* 20% of the body roll.

Is it really ? I dont know, I got my car like that. If I have a chance to try a *regular* rx8 I might be able to tell.

nycgps

iTrader: (1)

Im pretty sure Mazda already test Renesis with Turbo on. but they're probably not too happy with the results. maybe Reliability issues, could be Catalyst converter life issue. who knows ?

Whats the point of 500rwhp on the street ? can you even use 1/2 of it ?

ChrisRX8PR

iTrader: (1)

uhhh. Mazdaspeed does not make a turbo kit for the RX-8. I think you are confusing another kit and thinking its MzSpeed.

Chris

Loco1234

your correct...
its mazdasport... srry
it was from this sticky...
https://www.rx8club.com/series-i-major-horsepower-upgrades-93/dyno-comparison-rx-8-turbo-supercharger-etc-115447/

Loco1234

You'd be suprised.... granted the marauder is a 4200 cousin of the crown vic and the grand marque

TeamRX8

iTrader: (25)

can't reprogram the PCM for AT to MT, completely different unit

and that's the easy part, not even worth discussing as it makes more sense to take a loss on reselling the AT car and then buying a MT car

tajabaho1

idk, it doesn't feel that much diff, but my car was modded and my friend's MT was stock, maybe thats why, but I think my car and his are pretty much equally fast ofcourse his got more feel to it since I can clutch, de clutch, and that clutch drop is just god darn terrific

nycgps

iTrader: (1)

Its fun especially when you're stuck in 2+ hours of traffic.

My left leg is *bigger* than my right leg .... sad.

sosonic

When driving 140+mph in my flashed ECU RX-8 4AT, I don't feel like I'm missing anything.

Flashing the ECU and/or tuning the AT can get back a little power, 10HP to maybe even 20HP. This is partially because of the rev limit placed on ATs to protect their tranny. However, do get an ATF cooler and better AT fluid if you remove the the rev limit. This is also partially because of emissions standards in different countries and other factors. The problem though is Japanese tuners Re-Amemiya, R-Magic, Knights Sports are the ones that can flash the AT. If you live in the states you have to e-mail them and ship your ECU. The COBB AccessPORT can let you flash the ECU, but nobody knows when they will finally release it.

If you FI and MOD the AT you can get better performance than an MT. It all depends on your mods.

The primary advantage of the MT, is being able to drop the clutch off the line at say 5,000 RPM. With the AT, max off the line is 3,000 or so RPM, unless you do a neutral drop (but don't expect your AT tranny to survive long). This will make a difference in the 0-60. However at the 1/4 mile and more this would make less of a difference. If you FI the AT, it can be little to no difference.

The 6AT and the 6MT is the same engine. Your talking differences between the tranny, not engine performance.

If you live in an area with heavy traffic, having an AT can make for a more enjoyable time. Well, at least prevent some amount road rage.

Endgame

well said sosonic

Loco1234

So...
In the end after I Turbo a 6AT and mod it... (comp flash etc..) and do the tranny mods... I will prob be able to get a better 1/4mile then with a manual....

but the RPM's will still be more limited due to the torque convertor....

Are there any Higher RPM "aftermarket" Torque Convertors?
Something that would a allow the 06 6AT Shinka Im looking at to reach any closer to the RPM range of the manual or is it just a lost cause....?

Phil's 8

iTrader: (3)

Can't speak for the 6at but the 4at properly tuned & FI is more than the equal of any stock 6m/t on a track. On the street/drags the a/t needs work. Presently there is no known "aftermarket Torque Converter" available for any of the a/ts but several mods are in the works. Any racing trans shop can custom build you a good torque converter but it would be pricey. Keep in mind that this car is only 3+ years old and not as prevalent as other cars so mods will take longer to develop. The Interceptor X will allow for higher RPM ranges to equal the m/t but present shift patterns of the a/t make that RPM improvement a little difficult to use as you would wish (this is being worked on presently).

tajabaho1

don't forget you HAVE TO reinforce that tranny

Phil's 8

iTrader: (3)

Define "reinforse the tranny". Not sure where you are going here.

tajabaho1

didn't you say our stock tranny can only withstand 250whp? or was that mysql101 that said that, so I figured you have to change some parts (especially torque converter) and probably clutch pack or something else in the tranny to get 300 whp?

mac11

iTrader: (1)

got a link to these parts?

nycgps

iTrader: (1)

I do not agree with some of them.

Lets say same mod to both 6 AT and 6 MT, MT will still win in the end, you lose more power (drivetrain) in AT than MT. its not alot I know, but its still there to notice a different

and our AT (6 or 4) was not designed with such power. sure it will work for a while. but how long can it stand ? who knows.

Not like MT tranny are much stronger IMO, but its a better choice for performance (this car)

Like in my other post, I said if its me, and I know I want ultimate performance, I will trade the AT in for MT, Cuz AT will get even more problems down the road, way more than MT. At the end you will feel sorry you didnt trade it in first before you start the mod.

So to OP : Please listen to what Team said