Im starting to see that too. I mean i just dont see the numbers to justify over a tuned afc. If you go to the na thread youll see vafc's getting cars to around 215-220 and tuned standalones in the 225 area. I love ecus and i love tuning and gadgets but man 10 hp aint worth it i dont think.

 

an ecu will give you complete control over everything. you have no control over ignition timing with an afc. ignition timing will increase since you're targeting another load column to lean out the current afr mixture.

it's not all about peak numbers. especially in a road race car.

 

This is true. I have tuned on kpro plenty. Im just not sure given allowable mods how much greater tweaking ignition timing is actually gonna do. Prob not a hell of a lot. Just changing vtec engagement is prob the most beneficial gain of any of it. I just cant see gaining 5lbft of toque at 4300 being worth a thousand either. Granted if i have the money id do it in a heartbeat.

 

It can and has been interpreted as you can put whatever you want in the stock housing. Some STS miatas run megasquirts crammed into the stock housing.

As mentioned though, the RSX ECU will not work because it needs different sensors. If it weren't for that it'd be fine.

 

Definitely! You gain knock control/monitoring, datalogging, rev limit control, the list goes on. While these things could be controlled by separate modules, a standalone offers it in one package (Assuming you use something that is a STR Legal option).

 

Anyone got a haltech or aem ems they could open up and post pics of? Probably not hard to put in a stock housing as long as the pcb is small enough.

 

That's probably because there are no rules to allow UD/BD in ST.

 

I argued exactly that with a STAC member once, and according to him their intended meaning of "reprogram" could include replacing all the hardware with hardware that behaved differently. They may have added the "via hardware and/or software" language just for me.

 

If I'm not mistaken, neither of those ECUs support the OBD2 communications port, which is required to be operational in STR.

 

Anyone with the "know how" willing to start a numbered list of STR legal tuning options now that rules have been updated? I'm still seeing a lot of "that wouldn't be legal because...", so a list would help lay out the good options.