[BRZCory]

Thank you! That's awesome info to have!

 

[Gene]

Well, I didn't think of the fact that I've got an STI 6MT in there. Is the tranny crossmember different for the 6MT vs 5MT? If so, that would certainly explain why my fitment is different from yours.

yes, the 6 speed trans crossmember is different.

 

[blakem.u.r.t]

I’m curious if anyone has preformed an ez30 swap and got it to pass California BAR inspection. According to someone I spoke with about merging the wire harness to accept a manual trans. There are 2 different obd codes that have to do with the TCM/auto, that dont seem to be consistent among the his swaps. He thinks they have something to do with the year TCM and if its VDC.

 

[IWire]

Here's one of our blog posts on this topic. Make sure you don't need to pass SMOG or BAR since the H6 will basically not pass either.

6 Cylinder Subaru Swap | Subaru Wiring Harnesses and Adapters | iWire Subaru Wiring Services

 

[TeeJayHoward]

Those of you with EZ30 or EZ36 swaps, what radiator do you use?

edit: I found some info from iWire's swap that said an 01-04 Outback radiator (EZ30D) was used. Is it worth spending the $330 for a Subaru branded one (45111AE06A), or would you recommend a Duralast B2465 ($112) / Denso 221-3608 ($112) / OSC 2465 ($100) / CSF 3310 ($75)?

 

[mike-tracy]

I don't think you need to buy oem necessarily, but do buy from a reputable brand. I got the DENSO 2213608 from Rock auto for around $110ish. I have this in my Baja so I'm not sure about fitment in an Impreza.

 

[subinoobness]

Here's one of our blog posts on this topic. Make sure you don't need to pass SMOG or BAR since the H6 will basically not pass either.

6 Cylinder Subaru Swap | Subaru Wiring Harnesses and Adapters | iWire Subaru Wiring Services

I understand this is due to a manual not being offered and that trips up the ecu. I know the gen 4 legacy 3.0R AUS came with an ez30 and 5 speed manual, if you were to get an Aussie ECU and wiring loom, could you put that with the same year USDM EZ30? Would that solve the problem? Sorry if you explained it already in here somewhere, read up on your website and that is the conclusion I came up with. just had my timing belt go on a 300k ej251 and really don't want to fix it.

 

[mike-tracy]

From your link:

"The second thing to consider is cost. While many 6 cylinder engines are cheap, everything else needed to make the car run will most likely be custom and therefore expensive. There are no off the shelf aftermarket parts, so that means most items will need to be fabricated. Custom items include the exhaust, engine mounts, radiator and fans, fuel system, etc. If you don't have a big budget, this is not a good swap for you. "

If you're considering swapping in an H6 because your H4 just died, you're gonna have the car down for a very long time figuring out all the wiring and other issues, and it may not be worth it.

If it were me, I would start with a factory H6 car, and swap that to manual. As you said, they had manual h6's overseas, and getting an ecu for an 05-09 legacy h6 manual shouldn't be impossible. But I don't think I've seen people successfully pull that off.

Did you check out the Six Swapped Subaru Facebook group that Iwire mentioned?

 

[subinoobness]

From your link:

"The second thing to consider is cost. While many 6 cylinder engines are cheap, everything else needed to make the car run will most likely be custom and therefore expensive. There are no off the shelf aftermarket parts, so that means most items will need to be fabricated. Custom items include the exhaust, engine mounts, radiator and fans, fuel system, etc. If you don't have a big budget, this is not a good swap for you. "

If you're considering swapping in an H6 because your H4 just died, you're gonna have the car down for a very long time figuring out all the wiring and other issues, and it may not be worth it.

If it were me, I would start with a factory H6 car, and swap that to manual. As you said, they had manual h6's overseas, and getting an ecu for an 05-09 legacy h6 manual shouldn't be impossible. But I don't think I've seen people successfully pull that off.

Did you check out the Six Swapped Subaru Facebook group that Iwire mentioned?

Hey, I have requested to join the FB group, waiting on a reply.SO I am old and am used to old school swaps with distributors and stuff, so just trying to figure out the whole electronics aspect to a modern swap. Not that I am inexperienced with electronics just I am used to a smaller scale. I don't know if it's dead yet, waiting on amazon to deliver a borescope so I can take a look around the cylinders, heads, valves, and pistons. I thought my ignition coil died no noise no smoke just turned off so maybe it isn't that bad. Just planning for the worst case scenario. As far as the website he really doesn't go into specifics on what "features" won't work with a stock ecu. (other than ecu looking for A/T signal) I already don't have A/C or Cruise control so if its something like that what ever. IDK if anyone has tried an Aussie ECU looked everywhere, hence why I asked. I really hate to put the ej back in if it has to come out. I specifically bought the car to do H6 swap, originally with an EG, but reading up the laws and that engine needs to be same age or newer to remain street legal and able to do emissions. I could go stand alone, emissions are not necessary; but I would like to do as much as possible with stock Subaru components. So we'll see what happens with the engine and go from there the EJ finally quitting is just an excuse to start what I wanted to do with it. For the moment just trying to figure out everything that is needed to make as clean as swap as possible if that is the way I want to go instead of trying to figure it out as I go. Thanks for your input have a good one.

 

[mike-tracy]

Which engine specifically are you talking about? ER27, EG33, EZ30D, EZ30R, EZ36... Not saying it hasn't happened, I just haven't heard of someone using a foreign manual trans ecu. Japan, Australia, and other foreign markets got manual EZ30R-engined cars.

 

[subinoobness]

Which engine specifically are you talking about? ER27, EG33, EZ30D, EZ30R, EZ36... Not saying it hasn't happened, I just haven't heard of someone using a foreign manual trans ecu. Japan, Australia, and other foreign markets got manual EZ30R-engined cars.

Just the 30R, it's the one that would work best and I can actually find a manual ecu for sale, from what I found the the 30r was offered in manual 2004-09 everywhere but North America(maybe any of them will work if its a manual ecu, idk). I never heard of anyone using one either, but after 100 some pages the main problem I am seeing come up over and over is the NA ecu wont work with manual with 30R or the 36. Can't do the 33 or 27, older than my car so that won't float. 30d no CANBUS, but little less power and raptor supercharger looks like it only bolts up to the 30r and 36. I could always just get reman block and heads and throw that in, what an f'ing waste you know. Pulling out the shit motor anyways, rather not put shit back in, that 165hp struggles making it up the mountains. The 2000 ej251 is garbage. So, IT'S toast and is going in the bin. Now what to put back in? I figure I will give Iwire a call tomorrow, try and sort it out and see what is possible. I work from home, everything I need is within a mile from me, the car can be down for months. I have plenty of friends around that do stuff like this for a living just none have done anything with subi's other than rsti & 22B clone builds. (They say theoretically if I had the proper ecu, wiring loom, etc it should work just fine; computer doesn't know what chassis it is in. But that is just theory need to talk to someone that would be more lik98% sure it would work before i'd do it.) lol

 

[subinoobness]

Also when I looked up the 30r swap with a manual most the videos are from Australia and ALL the ez30r swaps (or swapping auto ez30r's to manual) don't have many videos of problems or hiccups were also in Australia, not saying they didn't have any but most people document the good and the bad of a build/swap. SO it just gave me the idea to ask. Here's to hoping. lol

 

[mike-tracy]

The manual ez30r ecu's code can be flashed onto an auto ez30r ecu.

Which is good because those ecus are immobilized. You'll need to get a complete matching set of the immobilizer hardware from the same car.

What concerns me is the hundreds of pages spread out over a decade, without a successful swap on the stock ecu. Even Iwire with their ez36 swapped RS used a standalone. That says something to me.

Now, back to the ez30d. It's old school from an electronics standpoint. You can't bolt on an off the shelf supercharger, and the ecu isn't really documented (but it IS tunable). Have you looked up Cardoc's build on the legacy forums? Ez30d, supercharged, and tuned. If your ez30r idea doesn't pad out, it may be a fun second option. But any way you go (h6 swap or turbo) is going to be $$$.

 

[subinoobness]

The manual ez30r ecu's code can be flashed onto an auto ez30r ecu.

Which is good because those ecus are immobilized. You'll need to get a complete matching set of the immobilizer hardware from the same car.

What concerns me is the hundreds of pages spread out over a decade, without a successful swap on the stock ecu. Even Iwire with their ez36 swapped RS used a standalone. That says something to me.

Now, back to the ez30d. It's old school from an electronics standpoint. You can't bolt on an off the shelf supercharger, and the ecu isn't really documented (but it IS tunable). Have you looked up Cardoc's build on the legacy forums? Ez30d, supercharged, and tuned. If your ez30r idea doesn't pad out, it may be a fun second option. But any way you go (h6 swap or turbo) is going to be $$$.

That was my concern also 133 pages and always gremlins that's why I am just trying to look outside of the box, see what's feasible. Going stand alone and not having some features is fine for me. Just before going in that direction, I want to see what maybe possible. I know that engine/ trans combo works from the factory in a Legacy. What won't work in the GC I am not sure about, what other things are tied into the ecu on the legacy that won't transfer over correctly(climate control, cruise, etc). So with this talking and the car parked, I am not in a hurry. More important to do things as clean and correct as possible if possible.(found out things take less time this way also) I haven't checked out Cardoc's build I will have to go over there after this. I am not opposed to 30d, just didn't see one available with a manual in my research so I thought it would have the same problem as the EZ36 ECU, but then it is a less "electronic" engine, no e-throttle, no avecs, but it seems no one can get that to work anyways on a 30r /36. This is literally the planning stage. I knew the engine was going to give out eventually when I bought it, got 50k more than I thought I would. SO I have a bunch put to the side for this. I will be doing all the labor intense stuff myself, have a couple friends that like me can fabricate stuff. A couple that are all about the "swap" since that is what they do at work, said they'd love to help even if they don't have much experience with Subi's. You know if any members with a 6 swap are in the North ATL metro by chance? Maybe ask them if I can see theirs and maybe visualize everything a little better. Anyways.... THANKS again for the help and bouncing ideas with me, I really appreciate it. cheers

 

[mike-tracy]

There's a guy who tweaks the ez30d ecu to run as manual. That's what I'm doing in my Baja. But even without the code tweak, people have been running those as manuals for years, with either electronics to fool the TCU to think there's still an auto attached, or just ignoring the check engine light for it.

 

[subinoobness]

There's a guy who tweaks the ez30d ecu to run as manual. That's what I'm doing in my Baja. But even without the code tweak, people have been running those as manuals for years, with either electronics to fool the TCU to think there's still an auto attached, or just ignoring the check engine light for it.

I will look into that too. Thanks! I will start compiling what needs to be done for each engine, problems, costs, pros and cons, start weighing out what will be best. Call iwire tomorrow and some subi techs to clear up some things see what is possible beyond just theory and go from there. Dude seriously thanks again!!! Have a great rest of your day!

 

[subinoobness]

There's a guy who tweaks the ez30d ecu to run as manual. That's what I'm doing in my Baja. But even without the code tweak, people have been running those as manuals for years, with either electronics to fool the TCU to think there's still an auto attached, or just ignoring the check engine light for it.

Alright so I didn't even make it to calling Iwire, after talking to some techs, never heard of anyone doing it either but to make it work like i am saying need to get a whole legacy 30r swap literally everything over and then use the Manual ecu and harness, then it "should" work but no one knows if it will. I really don't have THAT much time, lol. SO until I move and have a garage for such an undertaking just going to put another ej for the time being. Since I have the 251 and its a MAP sensor am I limited to just the 251 or are there others that will drop in plug in and start? I have heard that I just have to transfer the intake over to the replacement engine if it isn't 251 but still a SOHC 2.5. If i had to guess there is a little more to it, but I am not sure what that is.

 

[Thornblo]

Hi Guys!
Does anyone know the I/O requirements of the AVCS + AVLS system of the newer EZ30? In the process of purchasing a standalone so I need to make sure it has enough inputs.

 

[Thornblo]

Also,
Does anyone know if the old EZ30 cable throttle body bolt pattern fits the EZ30R plastic manifold?

Thanks,

 

[mike-tracy]

Hi Guys!
Does anyone know the I/O requirements of the AVCS + AVLS system of the newer EZ30? In the process of purchasing a standalone so I need to make sure it has enough inputs.

Unfortunately I don't think anyone from this thread is still actively pursuing the ez30r swap, tho not for a lack of trying.

I'd love to have one swapped into something I own. However, on top of the custom work & wiring, it sounds like the tuning would be formidable as well. You should ask a tuner you trust what ecu he is comfortable with. I'm sure there's a Haltech that will work. Matter of fact, I know there is, because that's what the "Mighty Car Mods" guys are using.

Here's a quote from a tuner, about 100 pages into one of the H6 swap threads on Nasioc:

I actually missed this thread, it happens, I apologize. The Hydra EMS system is only sold as a plug-in standalone and therefore it requires complete integration and model specific R&D. What you are attempting is beyond my scope of experience so you would be at the mercy of Hydra EMS America in attempting this swap. So many electronics would need to be scoped on a working car it's unlikely this would ever happen since there is hardly any demand.

In all honesty even if Hydra were to make you are harness you would still have to rewire at least the additional injectors, coils, AVCS, and AVLS. This should be the least of your worries as the tuning would be difficult since there would be no base map.

If you are determined and manage to get this accomplished I could tune it for you but you would have to fly me in and I would suspect 20-30 hours of tuning time to figure in the new AVCS curves, AVLS mapping, fuel, and spark maps.

I think the result would be awesome but prepare yourself for the amount of money and time it will take to accomplish this.

Thanks,
Phil
www.elementtuning.com

My takeaway was since there probably won't be any basemaps (for the Hydra standalone in that example, but it should hold true for others as well, unless maybe Haltech spent the time "scoping out" all the sensors on that engine, then developed a basemap?) It will cost $$$ just to get the engine started. Even more getting it tuned.


Regarding your other question about throttle bodies, I couldn't find anything about it. It will probably mean you'll have to make a spacer plate to adapt it.


I don't want to sound all negative about this engine, but there are probably 1000 pages of people asking questions and working on this swap (across the whole internet) with almost no success stories.

What about the ez30r's dumber cousin, the ez30d, with a simplier standalone? Throw a centrifugal supercharger on there with a basic standalone, pay a tuner or learn how to tune, and hopefully have fun?