RX8 turbo upgrade
 

Hello guys,

after having finished my 600 bhp Supra modifications end of april this year (PHR stage 1 turbo kit), I want to concentrate more on my RX8 which runs the following spec :

- GReddy turbo kit
- GReddy e-manage ultimate piggy back ecu
- GReddy Profec B spec II boost controller
- Custom dowpipe (fully decatted)
- HKS exhaust
- upgraded secondary injectors (680cc)

I plan to go add the following items :

- SARD fuel pump (280l/h)
- SARD fuel pressure regulator
- GReddy upgrade kit (GT3071 turbo + accessories)
- Interceptor X EMS
- Esmeril Racing Ignition Upgrade
- sr-motorsports Clutch kit
- sr-motorsports Flywheel

Any comments?

Thanks

I would change the following

- Interceptor X EMS <-- AccessPort from MM
- Esmeril Racing Ignition Upgrade <-- BHR yukon coils
- sr-motorsports Clutch kit <-- BHR Spec Stage3+ clutch
- sr-motorsports Flywheel <-- BHR 9lb flywheel

^ i agree with the above. also you may have trouble fitting the 3071R unless you get it from MazdaManiac. you can't just buy the turbo and stick it on. i thought it would be possible but it is not.

+1^^

MM (MazdaManiac) & BHR (Charles R. Hill) work together and have a very good reputation. I have meet and had a chance to talk to both of them. You won't receive better advice than this.

Thanks so far guys ... I will have a look.

Cheers

accessport is half the cost and twice as good. but there are drawbacks to every system. With that said, the accessport is as close to perfection as we can get it. The only downside that I've seen is the MAF system doesn't play well with BOV venting to atmosphere. You can get it to work, but things are popping and don't function like OEM. This is really not a fault of the accessport either. Recirculate the BOV and it's 100% like oem.

It's the GReddy upgrade kit from MM I had in mind :)

Thanks

Thanks mate.

Works on the Rex will start in march ... so I have time to get some open issues sorted out before :)

Can the Access port be setup for larger injectors (I have 680cc secondary ones) ???

pics of the supra?

yes very easily

I'm abroad with work ... will post Supra pics this week-end:)

One additionnal question I have is the following :

when I installed the GReddy turbo charger with the accessories, I also wanted to upgrade the fuel pump with a SARD unit (as 680cc secondary injectors have been installed). However, I could not access the OEM in tank pump as it seems that I need special tools to acces it.

Anyone know what is needed.

Thanks

^ you can go to your local dealer and ask them about borrowing it :P

One little more question regarding the Access Port.

I am a little bit confused as my mapper does not have to map the car on the conventional way.
As the setup will be a little bit special (fuel pump, bigger injectors, decatted downpipe and so on), how will the Access Port be set up correctly regarding the fuelling ( so far, the e-manage ultimate has been mapped on the car)??

Accessport and MM turbo upgrade!!1 you want to sell the supra???haha I know ppl don't let those things go...

But your best bet to uprage to MM turbo and Accessport...that will cost u roughly 2500 plus shipping tax etc...or wait for BHR turbo uprade.....

Ok ... but I am a little bit sceptic on the AccessPort.
On my Supe, 6 hours of mapping had been perfomed on the stand alone ecu (AEM) till it was finished (at 3 boost settings).
Having seen the installation instructions on the AccessPort, I saw that no mapping has to be perfomed. My Supe has been mapped several times (through the different upgrades) ... and I am confused that no such mapping sould be necessary on the Rex

How does the system know the setup of the car. Am I right that MM will provide the map for the setting I have (larger injectors, pump, decatted exhaust, ...)

Luc

P.S. Don't bother ... I would never sell my Supe ... not for any money ... 600 hp and 560 ftlbs are really nice :)

Another small question regarding the Fuel Pressure Regulator (FPR) :

how is the FPR to install as all the lines are hardline, not rubber?

pockets like his could hold the world. congratulations man! you live the tuner dream.

I would keep the Esmeril Racing Ignition Upgrade. They usually ship within one week.

The interceptor you may want to keep as well if you know how to tune a microtech (or want to learn) or have a local microtech tuner as you will have hassles with the MAF. If you are comfortable reprogramming the Accessport then more reason to consider but the software is cumbersome since you can't just dial on the street.

You can remove the pump without the special tool. It can be performed with a few large screw drivers (huge) and a rubber mallet. Be patient or the tabs will break (some break them and don't have a problem but I would not recommend it). It does release counter-clockwise. It is VERY difficult to remove but putting it back and removing it the second time is a piece of cake.

Traditional removal tools (the universal ones they sell through auto parts catalogues) unfortunately do not work and the Mazda tool is around $200 last time I checked.

Here some pics of the Supra.

Engine (just major parts) :

PHR stage 1 turbo (GT60 turbo with HKS manifold, PHR mid and downpipe, KN filter, GReddy 3 row FMIC)
PHR stage 1 fuel kit (720cc injectors, PHR fuel rails, FPR, twin walbro fuel pump)
AEM stand alone ecu with HKS DLI II, 3.5 bar map sensor
RPS max street clutch with RPS lightened flywheel
GReddy profec B spec II boost controller (3 settings : 1.2 ; 1.4 ; 1.6 bar)


600 hp + 560 ftlbs @ 1.6 bar

Luc

how'd you get 3 settings on the profec? It only has high/low.

As it's an electronic boost controller, I have
1.2 bar controlled by the wastegate valve when boost controller off
1.4 bar on low boost setting on the boost controller
1.6 bar on the high boost setting on the boost controller

ahh, forgot about good old OFF setting :)

When using the AccessPORT or the INT-X you need to know what impedance your injectors are. The OEM injectors are 290cc/380cc/380cc high impedance injectors. Most larger aftermarket injectors are low impedance. I know the INT-X (MicroTech) has injector drivers that can handle either high or low impedance but I am not so sure about the AccessPORT. You better make sure the AccessPORT can handle low impedance injectors if yours are low impedance before going that route because if not, you can fry the ECU.

Don't know how the 2 first settings are ... always have used 1.6 bar sor far ... never less :evil_laug

Yep ... that's ok. Thanks for the reminder :)

I personally tend for the Interceptor as I have a professional tuner (the guy who mapped my Supe owns a 1000hp Supe and a 700 hp RX7 - compagny cars - which have both been mapped by him ... so rotary mapping is no problem).

Cheers

I would pick a MAF based tuner before a MAP based tuner every time.

Here in Canada we have extreme changes in weather temps. I couldin't imagine having winter and summer tunes.

The Supe and the Rex are only "Summer toys".
They're not driven when temperature is below 15 °C ... under that temp, the Supe's Michelin Pilot sport cup semi-slicks don't even come on temp and I have wheel spin even in 3rd when the turbo comes on boost. :)

Anyone an idea on this???

If i am not mistaken, the ecu learn itself by target a/f , meaning the ecu fields are by a/f ratio, and it will learn the duty pulse/cycle by itself in regards to the target a/f ratio set in the ecu ?

ecu as refered to accessport***

Do some reading on the AP and MAF tunning. There is a tunning section with tons of info.

Here are the basics. While every RX8 is different they are all very similar, so after you give MM the details on your system, MAF housing size, injectors, ignition, turbo set up ECT the base MAP is usually very close You will do some data logging abd based on the readings jeff will make some adjustments to the injector scaling, target A/F ect.

Once everythign is set, its set. You can turn the boost up or down and it still functions correctly. If you decide to drive to the mountains it still works. Everything functions liek stock. 99% of the time it will make more power and have better drivabilty then a MAP based system.

Also, not sure if you need to upgrade the fuel pump. I beleive the stock system is good for 400HP. Most of the only people who need to upgrade the fuel pump are doing it to solve fuel starvation issues during hard cornering.

Where are you going to put it? I assume that you are going to a return type system..so you likely want the regulator close to the injectors...if that is the case you can put it in the engine compartment near the dipstick..the metal lines end there and go to plastic...and you can easily remove the plastic and use HP tubing and AN fittings. You would need to run new feed line and use the stock hardline for return.....

You would also need new fuel rails.....

The stock fuel system is good to 350HP at least for street driving...and OK for track as long as you remember the slosh effect and that the pumps die easily

How about upgrading the boost controller to the SARD also?

It has it's own pump, so can open the wastegate at ANY boost level......

(Plus you could copy the manual for me - I bought one used and it looks like a biatch to install with just Kanji instructions!)

S

Thanks for the clear info :)
Yeah, you're right with the pump. In theory, it should provide sufficient fuel. But, even now (with my actual setup), it sometimes does not bring the fuel to the engine at the right pressure when accelerating hard (sometimes, the acceleration pauses for some tenth of a second before going further). So I guess a more powerful pump would be required.

Thanks mate :)
The FPR problem is solved, as it will only be needed once the power climbs beyond 360 rwhp (wich is not as high as I plan to go).

I will go for a Bosch 044 pump (in take) wich will replace the OEM in tank pump. OEM Fuel lines will stay in place.

Thanks ... but I plan to use the boost ctlr I already have on the car (GReddy profec B) :eyetwitch

:lol: that's what happen when you are off from boosting for awhile....

interesting to know
steven

Hello chaps,

parts are slowly coming in ... exedy clutch has arrived ... waiting for the GARRETT turbo, AEM cold intake and the ukon coils.

I have problems contacting mazdaparts.com for an interceptor X EMS. Anybody got an idea if they're hibernating ... or maybee anyone have an Interceptor X?

Cheers
Luc

yuhuu ... Interceptor X is on its way (thanks Brice). :eyetwitch
Bosch044 fuel pump has arrived, plus AEM AFR gauge. What is a nice fitting place for the AFR gauge?
Yukon coils will hopefully be shipped end of the week.

I hope that the GReddy upgrade kit from MM I ordered is one of the 7 that will be shipped in april ... can't wait to have everything fitted.

Will update the post in detail (plus video :)) once everything is on the car.

Did you buy a new interceptor X? For a while they were all over the for sale threads and I am sure there were plenty more sitting in garages of rx8 owners who switched to the Access Port.

Yep ... new one ... from Fluid Motorsports :)

I am a big fan of stand alone EMS ... love the AEM on my Supe :eyetwitch

A quick hello and good by from my side.

The RX8 is up for sale now. It's running a GReddy TD06 hybrid turbo, with around 380 bhp at 13 psi.

More work has gone into the Supra lately, which has pushed 651 rwhp on the dyno lately

Attachment 241476

Once the RX8 is sold, the new project can be puchased : NISSAN GTR.

Best regards .. and thanks for the helpful information.

Cheers

Luc