ROTREX SC Brainstorming

[Calum]

Originally Posted by MANDALAY

With out going thru all the FI threads but does anyone know the answer to this ?

Are they all using the OEM ECU with modification/remap ?

The reason why i ask is they will all be MAF correct.

Well my comment is this they are all good to show you their gains with FI but i wonder how their drivability is especially at idle ?

Playing around with MAF is a PITA and really hard to get right. Maybe not on this engine but the Toyota engine i have in my SW20 if you even change the OEM air box your in trouble

The amount of control EcuTek has over the ECU is insane. There's atleast a couple cars running the OEM ECU with speed density tunes and many others running with remapped MAF sensors. An ECU control boost controller is running in Crawfords car thanks to Visconti, who is also working on a plug and play flex fuel sensor. FA20club.com is working on an ECU controlled meth kit. Basically they are able to remap EVERYTHING, change things add them etc. Once development of the EcuTek software is complete a stand alone should be all but worthless.

[Coheed]

Originally Posted by MANDALAY

With out going thru all the FI threads but does anyone know the answer to this ?

Are they all using the OEM ECU with modification/remap ?

The reason why i ask is they will all be MAF correct.

Well my comment is this they are all good to show you their gains with FI but i wonder how their drivability is especially at idle ?

Playing around with MAF is a PITA and really hard to get right. Maybe not on this engine but the Toyota engine i have in my SW20 if you even change the OEM air box your in trouble

MAF is the way to go. I feel tuners use MAP as a bandaid, or for a race car that rarely sees street use. MAP is sensitive to VE changes, but MAF gives you more flexibility. I'm sure you know this already. But all the really good tuners I know, wish they could tune for MAF better. But they all agree that MAP is simpler, not superior.

I think both ways are viable for your setup though. Especially if you plan on doing your own tuning and making changes on the way. But I wouldn't imagine using anything but the factory ECU is going to offer you any substantial advantage.

Can't wait to see what you come up with.

[MANDALAY]

So pardon my ignorance here , what we are really dealing which is a Subaru ECU that can / has been cracked as oppossed to a totally sealed Toyota ECU where you have no chance

[JoeBoxer]

I think Ecutek is more than capable of tuning a kit using a Rotrex, if not there is a plug and play solution you should check out. www.hydraems.com

[carbonBLUE]

Originally Posted by MANDALAY

So pardon my ignorance here , what we are really dealing which is a Subaru ECU that can / has been cracked as oppossed to a totally sealed Toyota ECU where you have no chance

yes, the ecu is what Subaru and Mitsubishi use. The ECU doesn't share the same type of programming that most Toyota's use

Originally Posted by Calum

The amount of control EcuTek has over the ECU is insane. There's atleast a couple cars running the OEM ECU with speed density tunes and many others running with remapped MAF sensors. An ECU control boost controller is running in Crawfords car thanks to Visconti, who is also working on a plug and play flex fuel sensor. FA20club.com is working on an ECU controlled meth kit. Basically they are able to remap EVERYTHING, change things add them etc. Once development of the EcuTek software is complete a stand alone should be all but worthless.

Tada himself said the ECU would be unlocked, maybe toyota sent over some of it's people to ECUtek to make this happen, before the car was released, ECUtek had 6-8 months of toying with the FRS/BRZ ecu so they could release a software to tune our cars as soon as they did

[serialk11r]

How about cutting into the stock manifold, making a custom air to water intercooler where the original plenum was, and then putting the throttle body before the supercharger? It's going to need a tune anyways so you can remap the throttle body. You get boost control, less piping, extra safety factor, all in 1!

[jdmitr]

Originally Posted by NoppyNop

From what I've heard, Jackson Racing said they were working on a Rotrex kit for the FRS/BRZ. Hope they will CARB the kit like they did with their CRZ kit for us living Cali.
I know you wanted to build your own kit, but at least you should be able to get some ideas sooner or later.

Jackson racing is owned by Oscar Jackson who owns Kraftwerks. So Oscar SR and Jr obviously have a ton of rotrex experience. I was lucky to spend the day with them when we dyno'd an s2000 I built with one of their kits. I know if they come out with the kit it will def be very well thought out! While I was there I was very privileged to talk about the engineering aspects of the kit and the lengths they went to in developing it.

As for the charger on the HKS kit I was told by an HKS employee that it is indeed a rotrex and the charger used is capable of more then they designed it for but they restricted the outlet pipe on the charger. By opening this up there is more HP potential.

[MANDALAY]

No you dont restrict the out let you restrict the inlet.

One thing that never gets mentioned the Kraftworks twin Rotrex Honda set 3 world land speed records

[MANDALAY]

Maybe im one eyed and have been told many times that i am with the Rotrex BUT after building up my car and feeling the Rotrex in full flight i wouldnt go any other way.


Its all about how to get it installed. If this was an ordinary engine layout it would be no problem.

The TB on the printex is moved to the inlet of the SC , koenigsegg ALSO DOES THIS.

Im waiting to see if Rotrex will also allow me to do this whilst keeping warranty. See the manual says not to.

If we can then all that needs done is to TB the inlet then the output can go to a Plenum/intercooler inlet

[jiaim]

On Ruf supercharger, they used TB prior to supercharger when they used ASA blower. Now that they use the rotrex, the TB is after the blower too. Another bad sign about warranty.

[uspspro]

Originally Posted by MANDALAY

The TB on the printex is moved to the inlet of the SC , koenigsegg ALSO DOES THIS.

The Koenigsegg has a secondary TB on the blower inlet to control boost and closes during shifts. It still has the main TB(s) at the plenum.

[KurtP]

I think usinga larger rotrex to get the power up is a compelling project, and ill agree its better than a cortech option.

A/w intercooler is, imo, absokutely the way to go for performance.

As far as mounting, what about using a stand off pulley system? Locate the charger outside the drive belt line, and use something akin to a belt tensioner with 2 8rib pullies stacked. One being driven by the motor and the second heading to the charger? Would there be room?


Fat fingered with multiple errors from a POS droid phone

[Sithspawn]

Originally Posted by MANDALAY

Since being hit by the bug of a Rotrex originally on the Spyderchat forum i have continually looked for builds over the years.

In real terms what i make is usually out of the relms of most but certain things can be used and are usually the key components.

Then also i have found many very good kits such as this one for the 370Z




This is a very well researched and comprehensive kit that i would gladely put into my car if i had a 370Z.
What will SHOCK many is how cheap it is at $6,500 and its a COMPLETE kit

Hmmm...that kit looks familiar somehow.

515whp on the C38-81 has been done with a slightly different version of the kit you posted. Here's the link to that: http://www.the370z.com/forced-induct...e-1-5-gtm.html

[MANDALAY]

That kit has to be the best valued system i have ever seen.Look at all the items you get , the custom parts etc

NO ONE will ever get close to put a kit like that together for that price, even me, not that ill be producing a kit.

Geez the SC is half the price of the kit