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Stew's '98 L wagon - Bastard JDM Swap + Standalone ECU Daily
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Old 08-21-2017, 09:55 PM   #71
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I like that idea! Gonna have to keep that stuff in mind for sure.
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Old 08-21-2017, 11:53 PM   #72
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Default Stew's '98 L wagon - V4 STi Swapped + Standalone ECU Daily

This just reminded me I have a full can of that stuff I never used from when I fixed my coupe. I planned on spraying a few spots up front....but didn't even think about the rockers. That's a really good idea.

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Old 08-31-2017, 04:16 PM   #73
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Just been driving and working on tuning the last few weeks. So far the car feels very strong, but lacking midrange and spool.

This is a second gear pull, so not the best data. Virtual dyno says 241/228 even with some wonky AFR's. Should be able to easily pull that peak torque value up and some power near redline. Definitely going to have to check for boost or exhaust leaks though.




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Old 09-01-2017, 07:09 AM   #74
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Okay, I got a couple of decent 3rd gear pull in this morning. The first one (yellow) was on an on-ramp so not a perfectly straight shot. Results are close, spool is still later than I think it could be. Can anyone with a EJ20K or VF24 on a 2 Liter comment?

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Old 09-01-2017, 07:22 AM   #75
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Stock EJ20k w/ VF24 tune has boost come up a bit before what I am seeing in your bottom graph. I'll have to double check, but I am usually seeing .7bar just before 3500RPM if i lug it a bit and 1.4ish (call it 20psi) revving it out.

Doesn't look too awful at all though.

AFR seems a bit lean, but I know the OEM tune shoots for like a 10:1 at WOT. I have no data to back this up on an EJ20k ECU though.
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Old 09-01-2017, 07:23 AM   #76
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I will say that there is a pretty large spool differential based on ambient temp and a heatsoaked IC. They V4 IC really kind of sucks, so I blame that.

Also no AVCS like in newer cars and an engine really designed to be revved leads for just a TAD of lag when everything is super hot.
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Old 09-01-2017, 07:30 AM   #77
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Quote:
Originally Posted by equinox92 View Post
I will say that there is a pretty large spool differential based on ambient temp and a heatsoaked IC. They V4 IC really kind of sucks, so I blame that.

Also no AVCS like in newer cars and an engine really designed to be revved leads for just a TAD of lag when everything is super hot.
Thanks for the feedback. Maybe I'm not too far off where it should be then.

I've notice that this thing heat-soaks BAD. These we're from my morning drive in crisp cold air. Intake temps were 18-22C, so pretty normal.

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Old 09-01-2017, 07:37 AM   #78
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I paid for premie! Just working out issues.

I'd say you're not too far off stock at all. I'm also pretty sure the Microsquirt uses BETTER electronics than the OEM ECU has from 1998 haha. Super interesting.

I'd just worry about a 12:1 AFR at full boost a little. Dats a lot of heat!

Powerwise, if your power graphs are correct, you're right on the money for what people have dynoed stock EJ20ks at and it also goes with the theory that the 276hp at the crank they were rated at is pretty much BS haha.
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Old 09-01-2017, 07:49 AM   #79
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I paid for premie! Just working out issues.

I'd say you're not too far off stock at all. I'm also pretty sure the Microsquirt uses BETTER electronics than the OEM ECU has from 1998 haha. Super interesting.

I'd just worry about a 12:1 AFR at full boost a little. Dats a lot of heat!

Powerwise, if your power graphs are correct, you're right on the money for what people have dynoed stock EJ20ks at and it also goes with the theory that the 276hp at the crank they were rated at is pretty much BS haha.
Normally a pre-requisite of mine before I'll tune a car is it HAS to have an EGT measurement to safely do WOT cal's. Since this is my car, and I've done a number of Subaru's before, I felt pretty safe targeting 11.8 - 11.6:1 and going blind on exhaust temp. If she melt's down its my problem to deal with
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Old 09-01-2017, 07:55 AM   #80
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It should be fine with the forged pistons, and as long as there isn't any engine ping.. run it!

I'd be interested in going for a ride in your car to compare it to my stock 20k... though I've been thinking of getting one of those ESL daughter boards and having a play at making it go a little faster...
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