I've talked to the guys at our local and would it be a smart investment for me to buy an APEXI SAFC and get it dyno tuned with my intake, and exhaust system, and eventually my header and midpipe?

I also have a rattle in my exhaust system, like i fried a part of my exhaust!? any advice on any of this is appreciated!

 

An Apexi S-AFC? Why? Besides, it's not a good idea to dyno tune your car. IMO, it's pretty worthless, since every dyno will yield different results, some desirable, some undesirable. My suggestion is to get the Canzoomer piggy-back (it's a piggy-back right?) device. I'm not to sure about the S-AFC, but I think it doesn't offer that much flexibility compared to the CZ. I'm not sure. I'm sure rotarygod, wakeech or epitrochoid would love to help you out .

 

The Super-AFC will function very much like the E-manage, except it's a lot more limited in tuneability. Do a search for the E-manage thread - it's a pretty big one.

The E-manage has a lot more tuning resolution, more options, datalogging, you name it. The only downside is you have to use a laptop or the E-01 display to tune it with. The Super-AFC only requires itself to work - you tune it all on the screen. I'm not sure of anyone that's used the AFC on the '8, though.

The Super-AFC should yield similar benefits to the E-manage as far as more power and everything. But, the lack of tuning resolution may result in some flat spots and whatnot that you can't tune out that well.

They both have their own pros and cons, and the end result is pretty similar. The Canzoomer piggyback is a plug-and-play unit with no tunability, though I think there's supposed to be a tuneable version later on.

If you take the route to tune the car yourself, you should REALLY invest in a wideband O2 sensor. They're lots cheaper than a new engine .

Dale

 

I just called up an Apexi authorized dealer and they said the SAFC is not supported for the RX8. Was going to contact Apexi directly and ask if there were any plans to bring this to the RX8.

Their website says that it's currently not supported, but that does not neccessarily mean it wont work.

It looks like the Apexi is similar to the E-Manage but offers more tuning points. Not sure about the other benefits though. This was strictly for AF tuning..

The E-Manage can tune at 5 points on the rpm band (+/- 20% AF) where as the Apexi unit can tune at 8 points on the rpm band (+/- 50% AF).

Maybe someone else can comment on the other benefits of the E-Manage besides AF...

 

Igniton Advance/retard

 

The eManage (aka CanZoomer) can make adjustments with two 16x16 grids. The Canzoomer is setup to adjust the MAF signal and the ignition advance. If you purchase the Greddy eManage Support Tool and the interface cable you can make adjustments to the maps using a laptop.

 

Talking with owners of cars with forced induction (especially turbos), the SAFC is only beneficial with FI. Admittedly I'm not personally familiar with it but I do know some people who have them and they seem like the biggest pain in the *** to get to "work" properly.

 

Hey... Yeah I read about the 16X16 Grid.. what exactly does that mean?

Also.. does the E-Manage support multiple maps? The Greddy system not the CanZoomer.... and it should be Greddy E-Manage aka CanZoomer..... Lets give the respect to the company who created it. As I understand it...

 

I mentioned the CZ unit because it is a good example of how the eManage can be setup to work with the RX-8. In this case you have two maps. The first map is used to intercept and adjust the MAF signal in comparison to RPM. Just imagine a spreadsheet with 16 rows (RPM) and 16 columns (MAF). If you want to leave it at the stock level you would enter a 0 or you can type in a number and it will vary the signal by that percentage. The second map allows you to control ignition advance with regards to RPM and it works the same way.

 

I guess thats why tuners make the big bucks and they are getting my money... haha

My car will be going in to get tuned within a few weeks.. I am sure i'll post my whole experience once that is done..

Thankx for the explination...

 

I heard a five wire O2 sensor was the way to go in self-tuning the car. I thought the RX-8 already had a wide-band, which is placed before the cat, followed by a narrow-band. I know the RX-7, the FD at least, had a narrow-band O2 sensor which really hampered performance.

 

So if you can make adjustments on this 16X16 grid doesnt that mean you have way more points of tuning than 5? What was that referring to then?

Thankx!

 

Sorry. I was referring to the actual wiring of the wide-band. As for the 16 x 16 grid, I think Speed Racer was referring to the RPM vs. MAF spreadsheet.

It's nice that someone brought this thread back to life.

 

Does anyone know if Greddy has a product that will support multiple maps?

I dont think the E-Manage does.. but maybe in conjunction with another product possibly?

Thankx!

 

I'll try to answer a few of the questions in this one post.

Out of the box the eManage has 5 adjusment points that are controlled by 5 tiny dials on the the box. To unleash its full potential you have to use the Greddy eManage Support Tool or the Profec E-01 remote programmer/display. With either setup you can make adjustments to the 16x16 maps.

It is easier to program using the Support Tool and a laptop because of the larger screen, keyboard, and mouse. The Profec comes into its own when you want to use it as a display of the info that is running through the eManage. You can also use it for multiple maps.

Yes, the RX-8 has both a wideband and a narrowband O2 sensor. The wideband shows up in CANscan as "O2S1 Sensor".

 

With the support tool and the laptop, you basically have an unlimited amount of maps for the E-manage. You can save them out to the hard drive of the laptop and switch maps around any time you like.


"Talking with owners of cars with forced induction (especially turbos), the SAFC is only beneficial with FI." - Nope. If this was true, no one would be buying the E-manage or the Canzoomer to put on an RX-8 that doesn't have a turbo. The factory typically tunes the powerband on the rich side to account for minor production variances. If they had it tuned to the edge, a car with a slightly out of spec MAF or TPS could run too lean and cause engine damage. But, we can tune that factory variance out.

I'm a bit behind on the forum, so I really don't know if it's been totally proven that the RX-8's stock wideband O2 is useable for tuning. But, that is a distinct possibility.

The E-manage does have the 5 adjustment ***** that you can adjust straight out of the box without the software, but with just that the unit's worthless. You HAVE to have the software for it to be worthwhile.

BTW, a narrow band O2 sensor doesn't "hamper performance" - it does just what it's supposed to do, and that's keep a 14.7:1 AF mixture at cruise for best fuel economy and best catalytic efficiency. You just can't use the output of a narrow band to tune with - well, you CAN, but widebands have become so cheap it's far better to get the real deal.

Dale

 

Answer by Apexi

Can the AFC be made to work on a vehicle that is not listed on the vehicle specific application list?
Yes. Our application list covers all the vehicles that the AFC has been tested on by our engineers. It is possible that there are vehicles not yet tested that may work, but we cannot provide any support (i.e. wiring diagrams) for those vehicles. The AFC has multiple preprogrammed air flow meter maps inside the unit compatible with 0~5V signals from the air flow meter, and cannot read any signal beyond this range. If the AFC is used on vehicle equipped with an air flow meter outside of this range, the unit will not respond thereby creating a dangerous situation for the engine. The air flow meter output signal needs to be properly measured and compared to a vehicle on current application list. Apex can offer no support nor accept any kind of responsibility for improperly installed units. Please consult with your local dealer and our website for up to the date information.

https://www.rx8club.com/series-i-engine-tuning-forum-63/how-kane-tunes-fi-renesis-turbo-ported-ceramic-seals-188514/