Hi..

Ill go with a a-spec 500r-hp with a 1.00 a/r housing with my 13b miami light wight scalped rotor.Excessive lim and presission dynamics injectors.
To this I was thinking about getting rid of the old ignition system and put a new one in to fit the new set up.
Ill be boosting all the 500r kit is good for and hoping for 20++psi pressur.

Any recomendation?

Ill go with a link g4 rx ecu..

 

Why a Link ECU?

 

I agree, why a link ecu? Get a PowerFC if you don't already have that link ecu, stock coils + HKS twin power is enough for your goals. If you have money burning in your pocket, go with M&W CDI & coils.

thewird

 

I hear that the apexi pfc is unstable and can put on like 5 degree on the ignition by it self on boost and high rpm.

Most of the guys I have spooken to says that apexi is a carp ecu when it comes to higher power.

PS!!! ill run only water inj. so I consider that a powerfull spark is important.

Link just came out whit the g4 rx made for rotary,And I just guess thats a great ecu,As far as I have heard?

 

whoever told you the pfc is unstable told you wrong, why do you think it's the most widely used aftermarket ecu in the FD community? it's reliable, and it's fairly inexpensive.

 

I wouldn't call it unstable. I have heard of some timing issues but nothing like what you mentioned. You can research it further by searching the Power FC sub forum. Look for posts from cewrx7r1.

The Power FC is a very popular option here and has been used in big power implementations on that same A-Spec 500 kit. Here is one example: https://www.rx7club.com/build-threads-292/knee-deep-my-current-build-845561/

Another example from that build - stock, low mileage coils and an HKS ignition amp.

Others have gone custom coils on some of the more exotic standalone eCUs - Motec, Autronic, Haltech. You can probably search those sub-forums for ideas.

If there is support for a Link on a rotary near you, it might be an option. Just be careful on an unproven product (unproven in rotary applications anyway).

 

The PFC is probably the most reliable and easy to use ECU out there. You plug it into the stock harness and your ready to go. Controls all the stock components like OEM and is a full standalone.

The timing thing your talking about is that it advances timing 2 degrees between certain RPM points. This is well known and not something random and definitely not something that makes it a bad ECU as you just make your timing map accordingly.

Your going to get a ton of support here for the PowerFC, and none for the Link ECU as nobody uses it here.

thewird

 

if you want something not much more technical than an abucus, you can stick with PFC (or microtech)
if you actualy want some useable, thoughtful features and far more control over engine parameters, ie something more like a calculator in comparison go Link, haltech, Motech etc.

"it's reliable, and it's fairly inexpensive. "
thats why its popular, and nothing else, ok maybe its easy to use. Easy to use, usualy with 90% of anything means low spec.


The Link do a plug in for FD, and you can change to run COP set up for very little extra cost.
I ditched the shitty PF in my car for Link.
Link gives you far more features and some of those can be used for engine safety which is worth its weight in gold and Link is quite inexpensive

 

Features are only useful if you need those features. I would recommend a PowerFC over a Haltech any day unless someone someone specifically needs the extra features on a Haltech. Or if their OEM harness needs replacing so they have to take into account the total cost.

Now the most important thing in selecting an ECU would be tuner support of course. So if all your tuner knows how to tune is Link ECU's, then by all means. Now if your tuning it yourself, you have to think about where are you going to get help when/if needed. I have heard about Link before but never heard of any car actually running them other then a few in Australia.

Assuming something based on a few comments is not furthering your argument. Especially when its completely wrong.

thewird

 

Agreed. ^

I had a Link on my WRX way back in the day. They are good ECU's. I'd keep my current PFC over putting a Link in my FD though.

 

I dont tune myself.
My tuner is more well known for mapping vipec and link,he personaly dont like the pfc,he says he guess its ok,but he is not that skilld with it. and dont like to take chances with it when it comes to ignition...

I think its better to have a ecu that my tuner knows,.dont you guys agree?
Is it enyone that have heard enything bad about the link?

 

Agreed, an ecu is only as good as the tuner doing the work. If they don't know the PFC, and they are your only trusted option, used what they recommend. Personally I have only installed, and tuned MSD 6A boxes with blaster coils. Works great with water injection at 25psi.

 

If he's familiar with tuning it on a rotary, yes.

 

that's gonna be the biggest problem and what I would worry about the most.

 

He have tuned rotary with pfc and vipec before,but he have tuned alot of cylinder engies with link and he says he knows more about link and vipec vs pfc.

 

has he specifically tuned a turbo rotary before, on any ecu

 

He only tuned rotary with turboes.
He have tuned my bnr twins arx with apexi pfc and BP rx7 with 600 hp and so on with the apexi,but he still says he would tune better with the link or vipec since he says he knows this ecu better