I am considering FI on my 04 rx-8; however, I do not want an outrageous amount of power. Here's a list of '?' for the better schooled crowd who's brains I wish to pick!

Would the basic GReddy kit be alright to use as just a basic setup?

Would a hi-flow fuel pump, larger injectors, etc. be required as well?

Would the Meth/Water injection setup also be necessary?

Can the stock exhaust be used temporarily?

Should an aftermarket oil pan (GReddy maybe?) be used that comes with port for the oil supply lines, or does the kit tap into a line for one of the coolers?

How much more heat will be generated by the turbo being oiled/cooled by the engine oil? Will the factory coolers handle the extra heat?

Should the car be professionally tuned/dynoed after the install, or will another tune (Cobb) work?

I understand the eManage is terrible, but will it work long enough to get the car running/functioning properly after the install is complete?

How long does the install take/how difficult is it?

I'm sure there will be a couple of things I will think of later and will try to post when they come to me. In summation, I want a bit more out of the car but not enough to make the car unreliable or hard to drive. Any advice would really help in planning where I want to go with FI. Budget, plan, purchase, execute! Damn I love my car!

 

Well first off the kit itself needs some things done to it to get it running properly.
upgraded couplers, upgraded turbo 3071r from mazdamaniac(dot)com, and a AEM cold air intake system that needs to be slightly modified to fit the kit..

once you have the system move to the car. I would get a fuel pump as the stock pumps tend to give out. go with a walbro 255. You can run stock coils unless your going with some big power..
stock injectors are good for about 300 rwhp, and so is your clutch.
get the Cobb AccessPORT from Mazdamaniac, and he will tune it via email.
get a full exhaust system, removing the cat.
You dont need meth injection unless you just want some added safety. Maybe the mazmart water pump.
AND SOME WIDER TIRED!!!! if you run 6psi it should be quick enough for almost any driving condition.

 

Read the Bazillion threads about this topic.

 

The exhaust is understandable, as well as the Cobb tune and upgraded water pump. One question still puzzles me. What is wrong with the turbo supplied in the original GReddy kit?

 

yes, as a basic setup. Plenty of people here have run it

not required
fuel pump: I'd recommend it anyways since it's cheap and the OEM one seems to fail at around 80k - 100k

large injectors are not required for the Greddy.

not necessary but a good fail safe device


yes, but don't expect the stock cat to last very long. you'll want to upgrade

Greddy oil pan isn't necessary, you can use the OEM and run lines accordingly.


factory coolers struggle to keep a naturall aspirated car cool in certain warm areas. I would not turbo without upgrading the cooling system but you CAN do it. (even though it wouldn't be wise)


absolutely get it tuned ASAP. bad tuning blows up motors.


e-manage = waste of $$$ with the AccessPORT now available.
again, you CAN do this but you'd be doing double the work and settling for an inferior product

completely depends on how mechaniaclly inclined you are

my advice: stop asking all of these "can I get away with ___" questions. The bottom line (as you can see in my answers) is that you CAN install a basic greddy turbo without properly addressing known issues but it is not advisable to build your car in such a manner.

My advice: address the car's short comings now and THEN turbo.
- upgrade the ignition
- upgrade fuel pump
- upgrade cooling (Radiator, water pump, thermostat) - if necessary

Measure twice, cut once.
Do some more readings on those topics and then decide what you want to do.

 

^could not have received a better response

 

good work guys

 

Jedi54:

That's exactly what I wanted to know. It's not a matter of what I can or cannot get away with, but to know what needs to be done FIRST to make this a proper install. For example, now I know that if I purchase an exhaust (which I will look into more deeply before purchasing) now, it will work with the turbo setup later when the time comes.

Jedi54/9krpmrx8:

I know its probably frustrating answering questions for people who don't know when you already do. There were a few things that I was curious about that I hadn't seen in other posts before. Everyone on this board has a comprehensive knowledge about these cars that I don't have yet, but would like to know/understand and I am very grateful for all the help anyone offers.

 

Good summary - the actual turbo that ships with the Greddy is a Mitsubishi, same as on a Bugatti Veyron.

It just could be bigger, which is what the MM upgrade will do for you.

The only thing I would add is a recirculating bypass valve , right at the throttlebody.

Good, timely tuning is very important. I don't wanna talk about it.......


S


.

 

absolute, take a look at my install thread.

I put in a bone stock RX-8 kit, with stock exhaust, stock intake, and cobb AP.

with the 3 fixes applied to the turbo (oil restrictor, wastegate signal, better management) everything you need comes with the kit. keep it below 10 PSI and no need for meth, injectors, or cooling, since your in MD it shouldnt be an issue unless you summer in the south.

Here is my setup, the only extra things i did was replace the couplers, oil lines, and coated some components. this is just for looks and long term reliability, you can do with the stock setup.

https://www.rx8club.com/series-i-major-horsepower-upgrades-93/wingles-turbo-install-171145/

ive ran it stock like this for over 4000 miles now. no problems.

 

Get the kit, install it.
Do the fix's, mainly the one where you relocate the place where the waste gate gets its reading.
Get an accessport and have MM tune it.
Get a BOV.
Get the Greddy oil pan.
Get a manual boost controller to raise the boost back after doing the fix.

This is all you should need.

 

don't even need the boost controller, with my wastegate reading 3 inches in front of the turbo, its a consistent 6-8 psi from 2700-redline