StreetDreamz247

I have been talking to rx7.com and racing beat. For some reason the techs that i talked to told me that if i turbocharge my 8 the trans will give out b/c its not strong enough??? And that you can't F/I the auto or you will have problems. I don't know whats up. I want to turbocharge my 8 really bad and i was in the process of doing so, but i want it to last me my money's worth. Please give me ya'll comments. Please someone with F/I on the auto tell me what would be good to get. The s/c or the turbo. And which brand would you recommend. I don't want 400hp but 300 would be sweet.

mysql101

you're likely going to get around 230-240 whp range with FI. Your transmission should be fine with that.

StreetDreamz247

Do i need any additional info?? 240 whp sounds sweet, but what other special mods do i need with F/I? How will the pressure dump? I was reccomended the greddy kit. Like I said I don't want to dump loads of cash just for something to break. All info would be greatly appreciated, I am no mechanic and am somewhat " lost in the sauce" when it come to specifics about F/I and what details I need for it.

mysql101

the greddy kit has been installed on automatics without issue in the past. You'll just need a tuner who knows how to properly tune it, since the maps that ship with the kit are made for the manual version of the car.

StreetDreamz247

I am located in alabama and finding some who tune it will be difficult. Do you recommend anyone that could tune it. It don't matter of the location because I want it done by someone who knows with out a doubt what they are doing.

chickenwafer

iTrader: (9)

if location doesn't matter then drive to Florida and goto Mazsport.

there is TONS of info on turbocharging on this forum- read up on it before just buying stuff and doing it. Especially if you are a self-proclaimed "no mechanic"

And yes, you can easily turbo an AT just easy as a manual

StreetDreamz247

thanks chicken appreciate it. "Especially if you are a self-proclaimed "no mechanic"
". Don't worry I am smart enough to know where my limits are. I don't know as much as most of you guys, but I will hopefully over time and learning. Mazsport looks like a winner b/c it seems like the closest and those guys know what they are doing. As far as know what to buy, I am still short, but like you said I will do all my research along with your and everyone else help.

mdw1000

Petitt is also in FL. They seem to be having good luck so far with their SC, but it has just come out recently. One of their prototype cars is a 4AT.

Mazsport just posted in another thread in this section about their turbo being available for an auto.

Both of them seem to have very good reputations.

dshiznit1489

get the mazsport turbo kit, they have like 4 of them to choose from, then get it tuned by mazsport..the best turbo tunin shop in the NATION!

Viva la Mazsport!

R888

Well the kit is like 8000 bucks with interceptor, not worth it unless it can reach to 300WHP

Phil's 8

iTrader: (3)

I have a Pettit s/c installed by Charles R. Hill and Mazda Maniac (I believe the first one not done in the Pettit shop). and tell you that they do quality work. If you have any questions about their performance, knowledge or commitment to excellence, just PM me.

The trans does not appear to be weak, as I have put mine thru hell, but not ready for racing. Charles R. Hill and a nationally known trans shop are looking into various upgrades to the trans. 09 Factor has had his turbo install quite a while and I have not heard him comment on the forum to trans problems. Depending on your driving habits, you could have trans problems. Unfortunately I tried to drive it like i stole it and the trans, in its current configuration, does not like that.

Racing Beat is a quality company but seems to have a corporate problem with a/t equipped cars and during a face to face conversation with Jim indicated that pursuing any upgrades to an a/t equipped car was not in any of his plans.

09Factor

You just had to drop my name didn't you ?

To the Op : I drive my car like I stole and the tranny dosen't seem to mind. I don't shift at redline. I usually shift around 7K.

However before going FI on an auto tranny, cooling is a must. Pick up an after market tranny oil cooler. I have a DIY on it in the DIY section.

The tranny is pretty darn close to the one used in the 3rd Rx-7. The fluid pump and valve body are the only diffrence. I know that people have had 300 whp through them. According to Rick at Ricks Rotary The one thing that breaks is of all things.... the flex plate.


I went with the EMU because
1.) it dosent keep a CEL on
2.) MM was local and knows how to tune it.
3.) Price

So yes it's really easy to install the Greddy turbo on an automatic. It all lies in how its tuned.



Yep Jim is a manual type of guy. He probally get much return investment from the automatic community for his R&D.


700 Club baby!

He||hammer

iTrader: (8)

If you don't mind driving come on down, we'll setup a club meet while you are here too

rotorocks

I was just curious how is it that a map for a manual transmission will differ from any other? It would be the same as to say that a map will not work on a supercharged car, because it was made for a turbo. I don't recall seeing any references to gears in neither EMU, not Int-X. Vac is vac, and boost is boost in any implementation.

mysql101

because most of the autos are 4 port, and don't flow as much air.

rotorocks

Int-X has the VDIF shut down all the time with Scotts base map too. which makes it act as a 4 port. And if I am not mistaken, greddy comes with some sort of a plate that supposed to keep the ports closed, is it not? whether you have it on is a different story, but the bottom line is, that there is no difference what type of transmission it is.
It is true that regardless of the implementation, the car needs to be tuned to cater to it's individuality (so to speak) as every car is somewhat different. But to say that you cant use the base greddy map on auto because it was built for MT is just misleading.

mysql101

it's not misleading. there are two completely different type of engines out there.

There are also two different type of greddy kits.

The first kit had no blocking plate. The second one did.

Thus my statement is more true than yours is.

rotorocks

To add to that, In fact I tried to run my car with the ports open full time, ports closed full time, ports opening and closing at 6200 RPM or what have ya. To my level of perception it has not made even a slightest difference in either AF, not the way it performed. Maybe when you are at 25 or something like that PSI the extra flow would make a difference, but at 7-9 PSI, my butt felt nothing. Neither did it affect the tune.

rotorocks

The difference is that one has the additional ports and the other don't
one has 6 injectors the other has 4.
One is detuned to produce less power in order to preserve the tranny.
the still have 2 rotors, still the same crank, same size, displacement...

exactly my point. ^^ it makes no difference whether the ports are there or not, when at the level of boost the greddy kit is designed to operate.

Which statement is more true?
The one where you say that greddy had two types of kits? Yes you are right. I missed that one.

The one where you say that they are different engines? They are and they are not. No winner here.
Or the one where you say that MT map is no good for the turboed auto?

I'd say that it is as good a base map as any. And it'll do just fine. One still needs to tune it (like you said) but the engine could care less, otherwise. If it needs this much of fuel for this much air at this RPM, it is what it needs. If the map can provide it, it is good to go.

rotorocks

Exactly!!!
And Moons car drives just fine. I can say that because I've ridden in it.

mysql101

So it's your contention that more intake ports don't supply the engine with more air?

How about SDAIS? The 4 port has less paths opening inside the engine too.

Even if the pressure supplied by the FI kits is a constant, the amount of air will not be, so you can't possibility say that it'll work for both when clearly the engines aren't usually the same. It'll be too rich for 4 port, or too lean for 6 port.

Phil's 8

iTrader: (3)

The constabulary in Phoenix must be slower than Vegas. I will not be happy until I get consistent positive shifts up to 8.5k. Your correct on the cooling - external or additional trans cooler is a must. The poster lives down south and may not have the same cooling problems as the desert but turbos or s/c need additional cooling out here.

After 7stock the trans will be my next "investment". More to come

MazsportScott

RR you may be confusing the APV with the VDIE. I set the VDIE to 9500rpm which is above the user definable rev_cut (9250rpm as shipped) in the base maps for F/I because using it causes a loss in power. The APV turns the motor from a 4 port into a 6 port at 6250rpm. Scott

maxxdamigz

iTrader: (1)

RR - are you saying a map based on 6 injectors is ok to try and run on a 4 injector engine? I personally, would not expect a tuned turbo map to run well on a sc engine. The volumetric efficiencies and fuel requirements would be different.

The expectations for a base map are generally that the car runs, but probably, if anything, runs rich. For that purpose, best guessing based calculations is a reasonable approach. Running a tune from an identical system is also valid. Running a tune from a different system be it Greddy kit to PTP kit or anything else, I don't find that to be a great idea. If the 6 port and 4 port engines ran the same, they'd have the same torque curves till 6250.

Then again, I don't think it would be hard to track down base maps for AT greddy installs.

rotorocks

That is not what i said. What I said is the additional ports do not make a difference at the levels of operation that is being discussed.

I wasn't going to go into listing out every single difference. This wasn't the argument.

That is only in theory. In practice (as i said ^) it will not be significant enough to become a noticeable difference. The dyno will show it, your butt - unlikely.

Most likely it is going to work well enough to start the car and drive away. It will not be a good tune, nor be anywhere close to a tune you'd want to continue on driving with, but it is going to run.

I did not say you were wrong, I said your answer was misleading, which it was. Especially given the way you phrased your original statement.
AT can be driven with a non AT map, it must to be tuned to get the best out of it. (just like with any other setup)