Open ECU?

[jedibow]

Originally Posted by SprayedBigCube

If you're anywhere between Pensacola and Panama City Beach, I'll help.

I wish, I'm in New Mexico, sorry I forgot I changed the location on my info LOL

[SprayedBigCube]

New Mexico is nice, what little I've seen of it. Be thankful you don't live up north and be tied to scheduling your life around that thing called 'winter' LOL

[Element Tuning]

Originally Posted by SprayedBigCube

Agreed. I wonder how much wiggle room there is from the EPA friendly exhaust timing that could be recovered. Toyota must have really yanked on it alot to create a large lobe separation angle for little to negative overlap.

I assume if you're tuning in speed density, you've either got a real VE table or god forbid (as GM has recently done with Gen IV ECUs) an inferred (from parameters) VE table. How bad are the midrange VE numbers looking? Can you post a screen shot?

The Hydra gives you a number of options now for fuel tuning but I'm a purist and tune straight injector pulse width.

The exhaust cam must be fixed to open extremely late so if you use no exhaust cam timing you lose about 25 hp up top. You can get the exhaust cams to move fully/reliably at about 3000 rpm. You just can't get a perfect blend between the exhaust and intake cams to eliminate the dip.

[Element Tuning]

Originally Posted by jedibow

How did extending the offset between the intake cam, and the exhaust cam effect the dip? Have you tried this?

For clarification I meant decrease cam overlap, sorry that was not clear...

That makes it worse which must be close to the oem strategy for emissions and fuel economy. Increasing overlap when tuning the Hydra EMS is what helps for me.

I think a larger intake plenum would help but what do I know I'm a turbo guy

Now keep in mind with the Hydra EMS we are not captive to the oem port and direct injection strategies but we have only scratched the surface. For now I've been focusing on building the cam timing strategies.

[serialk11r]

Are you running only the direct injectors for now?

[jedibow]

Originally Posted by Element Tuning

That makes it worse which must be close to the oem strategy for emissions and fuel economy. Increasing overlap when tuning the Hydra EMS is what helps for me.

I think a larger intake plenum would help but what do I know I'm a turbo guy

Now keep in mind with the Hydra EMS we are not captive to the oem port and direct injection strategies but we have only scratched the surface. For now I've been focusing on building the cam timing strategies.

I'm going to add you guys to the first page since you have ported the Hydra to this platform, please advise of anything unique, Harness, etc. I will include that the dv4s system is non functional.

Thanks,

G

[Element Tuning]

Originally Posted by jedibow

I'm going to add you guys to the first page since you have ported the Hydra to this platform, please advise of anything unique, Harness, etc. I will include that the dv4s system is non functional.

Thanks,

G

I'm pretty sure we are only going to sell the Hydra when I have tuned a direct injection strategy we are happy with. Now I may bend the rules slightly for experienced tuners who are pushing forward developing turbo kits etc and really need something now...like me You can always get the flash updates as we have them since Hydra 2.7 units are user flashable now for upgrades.

It will be interesting once I get hold of all my options how we'll tackle this but I would like to go for some serious lean burn strategy to bump fuel economy way up and then adopt more of a cylinder cooling strategy for maximum power.

For now the Hydra is 100% plug and play stand-alone with CAN Bus so your dash, power steering, AC, etc is fully functional.

[jedibow]

Originally Posted by Element Tuning

I'm pretty sure we are only going to sell the Hydra when I have tuned a direct injection strategy we are happy with. Now I may bend the rules slightly for experienced tuners who are pushing forward developing turbo kits etc and really need something now...like me You can always get the flash updates as we have them since Hydra 2.7 units are user flashable now for upgrades.

It will be interesting once I get hold of all my options how we'll tackle this but I would like to go for some serious lean burn strategy to bump fuel economy way up and then adopt more of a cylinder cooling strategy for maximum power.

For now the Hydra is 100% plug and play stand-alone with CAN Bus so your dash, power steering, AC, etc is fully functional.

Thanks for the info, I've used hydra ECM in the past

[Illusive]

Originally Posted by Element Tuning

For now the Hydra is 100% plug and play stand-alone with CAN Bus so your dash, power steering, AC, etc is fully functional.

Very cool news indeed.

[serialk11r]

Originally Posted by Element Tuning

I'm pretty sure we are only going to sell the Hydra when I have tuned a direct injection strategy we are happy with.

Sounds like you are running port injectors only? :O
Somewhere in one of the Toyota papers they wrote that the direct injectors are used at relatively high duty cycle to prevent them from overheating, apparently they can't go over 150C. I hope you guys didn't leave them in and turn them off.

[Element Tuning]

Originally Posted by serialk11r

Sounds like you are running port injectors only? :O
Somewhere in one of the Toyota papers they wrote that the direct injectors are used at relatively high duty cycle to prevent them from overheating, apparently they can't go over 150C. I hope you guys didn't leave them in and turn them off.

Thanks for your concern but don't you worry about me

A lot of what's posted about how this DI works isn't exactly the strategy Subaru is using on this engine as we've logged it plenty.

As I stated how we run the direct injection strategy is completely open and we'll run it so it benefits "us" the performance enthusiast the most.

[arghx7]

You don't have the resources to do a direct injector durability study.

[Bahraini86]

Just a quick noob question, is a flash like EcuTek's compatible with 91oct fuel? Will we see such gains?

[Element Tuning]

Originally Posted by Bahraini86

Just a quick noob question, is a flash like EcuTek's compatible with 91oct fuel? Will we see such gains?

A reflash is only as good as the person tuning it. With any tune, especially an off the shelf tune, you are digging into the safety/reliability margin placed there by the oem manufacturer. Its always best especially with a Subaru based ecu to custome tune the car.

We have built many blown up engines that only had an off the shelf reflash. Now its much harder to damage an NA engine vs. Turbo but it still happens.