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Banned
2001 Impreza 2.5RS+T 2001 Legacy GT
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1,236 Posts
Discussion Starter #61
Are you using an Emanage Ultimate? Or is this a complete factory car still? Looked at your cars thread but the last post was 10/2015!

Good news is that it's not just me, but this is the only other case I was able to find.
Rough idle, rough ignition, too high AFR

Using the VAGCOM cable and my laptop with ecuexplorer and ecu tracker seemingly show steady timing. I'm wondering if this is normal operation and the emanage can see these minute changes. I do know that my timing dropping to 0 when I get on the throttle is not normal, and I do not know what's causing that. Hard to say if the car was or wasn't doing this before the turbo as I wasn't logging then!
 

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Premium Member
01 STM RS Sedan & MORE!
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315 Posts
I'm running Project Lambda for datalogging, soon to be for tuning. Want to try to get this issue sorted out before I start tuning. I don't want to be compensating for something that's not working properly.

Basically, the only power mods I've got are a UEL header, cat delete, and Scoobysport axleback. The afterfire/exhaust popping has been happening since I bought the car. I need to do some more logging before I start panicking, but as far as I can tell, the previous owner doesn't have some ridiculous ebay chip that messes with a signal going to the ECU. Since it's done it since I've owned the car, and with two different engines, I'm starting to look at fuel or ECU problems.
 

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Banned
2001 Impreza 2.5RS+T 2001 Legacy GT
Joined
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1,236 Posts
Discussion Starter #63 (Edited)
Among things that I should have learned years ago. An engine does not operate at 14.7 throughout its rev range. Basically only idle and cruise. So while autotuning for 14.7 I've been tuning it quite lean! Lean makes power, but lean also makes things break. Autotune is only good for when boost comes on, or an OBD1 car that doesn't have fuel trims.




So wrong! Don't listen!

Been toying with this for about a month now. I plugged my factory O2 sensor back in.
.44ms for the 280cc injector is really freakin close. 35mph, and 60mph cruise speeds are both positive fuel trims but less than 5%. and idle is -0.8 to 1.6. The weirdness starts with an extended idle duration, and fuel trims will creep up to +15 and hang there long enough to set a LTFT. Wait a bit more and AFR turns rich and it goes back to -0.8 to 1.6.

The internet says with a high idle trim to look for a vacuum leak, but my car is MAP metered so I'd think it would have to be a massive vacuum leak to affect its ability to run.
 

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Banned
2001 Impreza 2.5RS+T 2001 Legacy GT
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1,236 Posts
Discussion Starter #64
Had a run in with a 2011 supercharged A6. Four pulls. Three from a slow roll, one from a dig. First run I lifted on shifts as I always have when deep in the pedal. He obviously pulled away. Second was from a dig, no contest. the 4.44 gearing helped me jump in to the lead and keep it. 3rd and 4th runs were from about 20. First time I've flat shifted the car. I've let it shift in boost before but maybe around 70-90% throttle. Never with my foot pushed through the floor board. This thing is a monster, I pulled on the Audi both times.

Specs on paper the A6 makes 300hp and 310tq, granted... close to 4,000 pound curb weight, still manages a 0-60 in 5 seconds.

Take aways... I need beefier brakes. WRX fronts and H6 rears won't hold the car while loading up the torque converter... though I don't know if 4/2 pots will either, but bigger is never bad. My AFR goes full scary lean on flat shifts. No idea what the ECU/TCU are doing with ignition and fuel, but the engine is definitely an air pump in the transition to the next gear. And finally, it's a whole lot quicker than I expected!
 

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Banned
2001 Impreza 2.5RS+T 2001 Legacy GT
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1,236 Posts
Discussion Starter #66
shitchyea!!



and from what i've read, the 4eats will take the abuse more so than the manuals.
Noticed I don't have this specified in the first post, but I do have it connected to a tube and fin external cooler. 12,000GVW if I remember right. Figure that was more than plenty for one of these. Loading it up against the torque converter creates a shit ton of heat though, I should probably get a temp gauge for it.
 

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Banned
2001 Impreza 2.5RS+T 2001 Legacy GT
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1,236 Posts
Discussion Starter #68
i don't think that's a bad idea.

i didn't read it (ie: too lazy to go look through), but are you using the turquemada lite thingy too?
I did build one of those modules so I could run 50/50 but I've only used it in the snow. I did not do the handbrake part of it though as it did not interest me. I did initially have it hooked up wrong, and now my Duty C Solenoid hates its life. It was making some funky noises last night, so we'll see how much longer my car is AWD. haha.
 

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Banned
2001 Impreza 2.5RS+T 2001 Legacy GT
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1,236 Posts
Discussion Starter #70 (Edited)
I've been driving and boosting the car for a week now without the Enricher module plugged in to power. I haven't plugged the laptop in to it either to see what my trims are like but the car hasn't been behaving in a way where I've felt I needed to. The car works best if I let it warm up before driving, or else there is a strange issue with fuel trims that eventually level out to where they were. I think this is the air assist. But! I can do solo red light drags two or three in a row, and then go right back to driving it normal with no hiccups.

So, I don't think an Enricher is necessary anymore; it was likely a bandaid for the horrible autotuning I was letting the Emanage do. BUT, for low boost around 5psi where you don't need timing control, or already have a timing controller an Enricher will likely do exactly what you need without the need of a complicated piggyback or a RRFPR.

I've been flat shifting and driving it harder then I ever have before, compression is still the same as the last two times I checked it. Very very minimal oil usage. I'll be doing an oil filter media analysis soon to confirm the bearings are still good. Let my brother experience how awesome AWD is. Though I think right now mine is more 4WD as you can feel the drivetrain bind up while turning in reverse. Wet roads, turning on to a street and punch it, no push out in to the oncoming lane, just hook up and go.
 

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Banned
2001 Impreza 2.5RS+T 2001 Legacy GT
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1,236 Posts
Discussion Starter #71
Finally got my spats on! They don't quite fit the US bumper, but I made it work as well as I could with some zip ties.

 

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Banned
2001 Impreza 2.5RS+T 2001 Legacy GT
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1,236 Posts
Discussion Starter #72
Am ultimately convinced that it's the automatic transmission that is causing me issues. Over the last few months I've learned not to boost in OD unless going at a rather illegal rate. Last night someone tried to get the jump on me so I went for it. So I was on the highway at legal speed, and when I pinned the throttle and pulled back on the shifter it was already showing 7psi by the time the trans shifted down.

Smoke show.
 

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Banned
2001 Impreza 2.5RS+T 2001 Legacy GT
Joined
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1,236 Posts
Discussion Starter #74
and maybe an EZ30. donor cars are dirt cheap on copart..
 

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Banned
2001 Impreza 2.5RS+T 2001 Legacy GT
Joined
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1,236 Posts
Discussion Starter #75
:(


time for some 5speed 4.44 action.
These aren't as common as I'd like.

I found a Perrin DP on ebay for a couple hundred bucks, no one else wanted it so I took it in the last couple hours of the auction. This should solve my over boost issue. We'll see how long a motor lasts when it's not superturbocharged.
 

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Banned
2001 Impreza 2.5RS+T 2001 Legacy GT
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1,236 Posts
Discussion Starter #76
No major updates, wish I had more motivation. I did get in to it the other day looking for something to help my brother chase down some high LTFT on his caliber srt4 and found water getting in both B pillars and the left tail light. Got a snazzy new job recently and was able to get new OEM window seals for about $79 each. Should be here tomorrow or Tuesday. The rear glass might need a better angle to put more pressure against the seal.

As for the tail lights, JDM ones may be in the near future. :naughty:
 

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Banned
2001 Impreza 2.5RS+T 2001 Legacy GT
Joined
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1,236 Posts
Discussion Starter #77 (Edited)
Got the window seals installed. mine was so flat that I didn't think I had gotten the right parts! Lighting wasn't ideal for pics but oh well

Edit for posterity: 62710FA000 and 62710FA010 for RH and LF respectively for the sedan. They come with new pins preinstalled. I had ordered pins too since the parts diagram didn't specify and only showed three per side. Somehow over 30 showed up...

Old






Ripped it out... satisfying and scary at the same time. Cleaned all the gunk out that had collected under and around as well.


New ones! Looking so fresh




 

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Banned
2001 Impreza 2.5RS+T 2001 Legacy GT
Joined
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1,236 Posts
Discussion Starter #78
We've officially become a Subaru family!

 
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