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Old 04-17-2014, 07:33 PM   #26
69subaru360
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I'll buy it when/if it's ready and don't mind having to buy the apexi intake. I think I'd bump the boost to 20 or 21 and call it good.
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Old 04-17-2014, 10:18 PM   #27
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I'll buy it when/if it's ready and don't mind having to buy the apexi intake. I think I'd bump the boost to 20 or 21 and call it good.
you can get away with 20psi on the green maf and 550s safely
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Old 04-18-2014, 02:01 PM   #28
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you can get away with 20psi on the green maf and 550s safely

I don't feel safe about it. That's too close for comfort for me. I've run the car over 6k in 5th gear which is almost 150 mph. I really don't want to blow an engine at that speed. I've also run it real hard in cold weather. I'll just wait till there is a solution I feel safe with. My EJ20G is still fairly low miles and doesn't leak, burn oil or make any noise. I hope to keep it that way.
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Old 04-30-2014, 10:39 PM   #29
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Just to keep this near the top bump
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Old 05-08-2014, 01:40 AM   #30
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Old 05-08-2014, 04:25 PM   #31
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is rob normally hard to reach?
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Old 05-09-2014, 01:28 AM   #32
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I guess just as hard as any other guy who's got a (full time) job and spending a (little) bit of his spare time on projects like this...
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Old 05-09-2014, 01:14 PM   #33
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is rob normally hard to reach?
Yes, give him him a week or so, this is not his full time job. He's doing all of us a favor here.
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Old 05-18-2014, 10:07 PM   #34
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I don't feel safe about it. That's too close for comfort for me. I've run the car over 6k in 5th gear which is almost 150 mph. I really don't want to blow an engine at that speed. I've also run it real hard in cold weather. I'll just wait till there is a solution I feel safe with. My EJ20G is still fairly low miles and doesn't leak, burn oil or make any noise. I hope to keep it that way.
youre not going to be able to do a 5th gear run with any subaru engine safely.
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Old 05-19-2014, 11:48 PM   #35
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Old 05-20-2014, 08:05 AM   #36
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youre not going to be able to do a 5th gear run with any subaru engine safely.
And why is that? I've regularly ran my 89-93 EJ20G at over 6k rpm in fifth for longer sustained high speed runs on the German Autobahns.
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Old 05-20-2014, 06:35 PM   #37
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youre not going to be able to do a 5th gear run with any subaru engine safely.
Why? Mine has been fine during 5th gear pulls to over 6k rpm. I only have a 140 speedometer so I don't know how fast that was. I'd guess 150? I've done that many times for a few minutes at a time with no damage. I just keep an eye on the boost and temp gauges.
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Old 08-04-2014, 04:53 PM   #38
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not sure if this thread is dead or not, but with added meth, could you put a bigger turbo on as well and not run too lean? obviously monitor AFR with adding boost before it gets too lean. i have the 550 as well and have no idea where to go from here. i wanted to add a bigger turbo with the meth and a much bigger tmic on a built ej20g but have no idea where to go to go up with the whp on these motors.
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Old 08-04-2014, 09:32 PM   #39
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Why build an EJ20g? Tuning options are sparse and so are parts, if you want more power why not go EJ207? EJ20g is a nice cheap option for a swap, but if you're going past the ~280 wheel HP of the RobTune, why stick with this platform?
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Old 08-05-2014, 12:29 AM   #40
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only because of availability where i live, shipping a motor to here costs a ton and just buying new parts for my current block is much easier. i have all the parts i need(minus a couple add ons ) but all the main components i have already and waiting for me to build it. but back to my question,

Quote:
but with added meth, could you put a bigger turbo on as well and not run too lean?
is it possible?
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Old 08-05-2014, 09:33 AM   #41
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Monitoring AFRs and slowing increasing boost pressure could probably net you small gains by edging into the safety factor the fueling tables rely on. I'm not sure if adding a larger injector would make a difference. The extra fuel might just be dump returned. An AFPR might be another small work around.

Without access to the actual tables in the tune you won't be able to make significant gains with any of these mods. Sure, you could get them to run and pick up a few, but at the risk of your engine and only to utilize a small percentage of what the larger turbo could deliver.

If Rob can't support you directly, I think this is a dead end for you.
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Old 08-05-2014, 09:36 AM   #42
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I think you run out of fuel. The meth is fine for cooling but eventually you'll run lean because there's no way to get more fuel into the car at higher air volume under boost.
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Old 08-05-2014, 12:21 PM   #43
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Originally Posted by CRX7 View Post
Why build an EJ20g? Tuning options are sparse and so are parts, if you want more power why not go EJ207? EJ20g is a nice cheap option for a swap, but if you're going past the ~280 wheel HP of the RobTune, why stick with this platform?

I can't see any real reason to go any farther with an EJ20G. It's fast and reliable at that level. Mine has been there for 35k miles.

Besides 280-290 WHP in a 2800 lb car is pretty quick on the street. Mine ran a 12.6 at the dragstrip and does 150 mph.
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Old 08-05-2014, 12:46 PM   #44
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I can't see any real reason to go any farther with an EJ20G. It's fast and reliable at that level. Mine has been there for 35k miles.

Besides 280-290 WHP in a 2800 lb car is pretty quick on the street. Mine ran a 12.6 at the dragstrip and does 150 mph.
is there any actual drawback to a built ej20g vs say a 207? because its all i have to work with and other than limiting factors with the maf and the ecu, if you can get a PFC, or a hydra why couldn't you? I'm sure you could get big power with these motors. sure you could use the new tech on the new motors ike avcs, map sensor, tgv's etc etc, but i already have a closed deck block, so why would i wanna go to a semi closed deck and be limited? Just a thought....
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Old 08-05-2014, 12:55 PM   #45
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is there any actual drawback to a built ej20g vs say a 207? because its all i have to work with and other than limiting factors with the maf and the ecu, if you can get a PFC, or a hydra why couldn't you? I'm sure you could get big power with these motors. sure you could use the new tech on the new motors ike avcs, map sensor, tgv's etc etc, but i already have a closed deck block, so why would i wanna go to a semi closed deck and be limited? Just a thought....

The limits are in the tuning capabilities and maybe the head chamber design. The enclosed block is definitely better. Why I keep my BG legacy sport. Go stand alone and wire it in and go at it. The cost of the stand alone is the cost of switching to a newer platform.

Pick your poison, but you'll need a tuner or know how for stand alone.
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Old 08-05-2014, 01:30 PM   #46
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The limits are in the tuning capabilities and maybe the head chamber design. The enclosed block is definitely better. Why I keep my BG legacy sport. Go stand alone and wire it in and go at it. The cost of the stand alone is the cost of switching to a newer platform.

Pick your poison, but you'll need a tuner or know how for stand alone.
Ya I've already purchased the parts for the 20g so its going to be all forged, ill be making a thread on my build soon. I have a friend who tunes his own car, and I'm getting more and more knowledgeable with tuning so i would feel comfortable tuning my own car to a certain point and later going to a tuner to maximize everything. there are no tuners where i live lol or anywhere close.
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Old 08-05-2014, 05:53 PM   #47
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Originally Posted by wrxsteven View Post
is there any actual drawback to a built ej20g vs say a 207? because its all i have to work with and other than limiting factors with the maf and the ecu, if you can get a PFC, or a hydra why couldn't you? I'm sure you could get big power with these motors. sure you could use the new tech on the new motors ike avcs, map sensor, tgv's etc etc, but i already have a closed deck block, so why would i wanna go to a semi closed deck and be limited? Just a thought....
95% of the EJ20Gs are open deck. If your profile is correct and you have a 97 WRX it's not a closed deck.

PFC has no knock control at all. You are one bad tank of gas away from blowing it up at all times.

Hydra is a huge PITA to tune, that's why nobody tunes them.
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Old 08-06-2014, 01:45 AM   #48
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95% of the EJ20Gs are open deck. If your profile is correct and you have a 97 WRX it's not a closed deck.
well i have it apart and i can guarantee you i have a closed deck. well ok, so ill write off hydra and PFC but what about ESL? how easy to get tuned from a company with eel is it?
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Old 08-19-2014, 03:53 AM   #49
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Then it is not a 97 engine you have.
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Old 05-22-2015, 02:56 PM   #50
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Originally Posted by wrxsteven View Post
Ya I've already purchased the parts for the 20g so its going to be all forged, ill be making a thread on my build soon. I have a friend who tunes his own car, and I'm getting more and more knowledgeable with tuning so i would feel comfortable tuning my own car to a certain point and later going to a tuner to maximize everything. there are no tuners where i live lol or anywhere close.
Bump.

wrxsteven, did you ever get your build thread going? curious as to what route you went with internals.

Anyone know if there's been any progress on the z32 tune?
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