Other than rewiring a S4 T2 to S5, buying a PFC and adapter harness, are there any other ECUs that can do sequential turbos? Breezed through the forums, did a search, researched Microtech, Wolf and Haltech but all seem to imply single turbo is the only thing used with these.

Or can someone direct me to a thread that has a comparision? Can't find it anywhere.

Thanks.

 

Just about every major EMS on the market has at least one aux PWM output that you could use to sequence the turbos.

Every EMS does basically the same thing, and that is to manage the fuel injection and ignition. Beyond that, there are so many small differences that a comparison would be overwhelming, and I'm not sure if most people would even know which features they would or wouldn't like without actually trying out the EMS. An EMS is extremely complicated, and it is best if you let your local tuner choose the EMS and tune your car, rather than trying to figure it out yourself.

 

What exactly are you trying to do?
Slap on some FD3S or Cosmo stock twin turbos?
That's going to be complicated, and not all the aftermarket EMS ECU's can control it like the stock system - it's 3 stage for the FD3S and 4-stage for the Cosmo!

Or are you talking about a custom sequential system?
That's a waste of time, IMO...


-Ted

 

Actually, I am considering getting either a 13B RE/REW hybrid with twins running without the Cosmo ECU since it is auto only and no one has figured out how to trick the ECU into thinking it is still auto.

Ever been done before? I don't know of anyone who has.

Where's the challenge in putting a big single on? Hell, you can put a big single on anything, just ask Tim Allen. Has anyone put together highly modded sequential twins on a Cosmo with a manual and made it work? I would prefer the challenge and uniqueness of it.

Shouldn't cost any more than a FD engine in the end. Already done that so the complication is not any more than what I have already done with my FD.

I realize that all stand alone ECUs can deal with fuel and ignition. That's the whole point of that nasty complicated little box. But which can deal with sequential turbos like the PFC!?

 

Fricken waste of time...
You're going to waste a lot of time and money trying to be different.

The turbos are not reliable, and they kill seals like there is no tomorrow.
There is a reason why owners get rid of them quickly.

Check Corksport for ECU reprogram - they supposedly figured out how to get rid of the auto trans code crap.



-Ted

 

RETed, thanks for the constructive input.

One of the wonderful things about the Mazda rotaries in general, is the sequential system. Yes the turbos go bad sooner than big fat hair driers (ask yourself why they do and it can be fixed). BUT does anyone else do it? No. That is why serious gear heads still shake their heads at the rotary WITH sequentials and not rotaries with singles.

Admitedly, you can't make more power than a big single. You CAN make more usable power with sequentials. I don't drag race my cars (unless some punk wants to prove something). I road race them. Seen any road race cars with BIG singles on them lately. No. Not even experimental ones.

How about rally you say? No massive singles there either (aside from the fact that they are not allowed, but if they were, those tricky dicks would find some way of homolgating and racing it, believe me).

Power curves prove it, sequential gives you more power low to use in rally and road racing at a sacrafice of high end power.

Now, back to the original question.

IS THERE ANY OTHER SYSTEM THAN APEXI THAT CAN CONTROL SEQUENTIAL TURBOS ON A ROTARY?

 

"Racing" and "stock sequential twin turbos" do not belong in the same sentence.
KISS.
If you insist on "twin turbos", I'd rather go parallel twins.


-Ted