88targarose

I may be selling the RX... so, -1 Downpipe... Sorry guys.

The two I'd been looking at heavily are the Zeitronix ZT-2, and the Innovative Motorsports LM-1. They both offer some very nice computer logging features, but the feature that reallllly grabs my attention is the mountable LCD readout for the ZT-2. It's the kit I've been thinking about getting myself. Also, with the base prices being $349 for the LM-1 and $279 for the Zeitronix (Not incl. LCD Display, $399 with it) makes things even more tempting. However, in many applications to get the most outta the hardware it's nice to have a laptop to do wideband logging on. So, instead of nitrous runs where merely watching a gauge rise or fall you can log it. Personally, the ZT-2 is the way I think I'm going. $399 for the whole package, it can take inputs from other model EGT sensors (which I've got), simulates a stock narrowband signal for the stock ECU, does 9 hours of datalogging, has inputs for boost and TPS and so forth, etc... For the price and the features, I don't know how I can go wrong.

If you've only got a narrowband gauge (since it's reading off a stock O2 sensor) it's nowhere near accurate. They're more eyecandy. Calling one accurate is like calling the french a dominating world power, it's just not correct.

Technically speaking, it should never vent to atmosphere. It should intercept the boost line between the turbo and the wastegate. Since it's disabled though, it seems to throw a code. To disable this, I was going to T into the boost line, and then into the control solenoid, then block of the other side. This way, it thinks it's functioning, but isn't really.

I assume it's the same as any electronic controled boost control solenoid. It watches boost levels, and when it hits the predetermined level, it dumps the pressure into the wastegate actuator, therefor limiting boost. In theory, if I T into it, it will only vent pressure once I've hit the stock boost level. That'll cause me to run richer, since I'm bleeding off metered air. Ok, now that we've pondered that code, what can I do about the rest?

Hmm... I wonder if I could plumb a line into it, and cap the exit side of it. Just to make it think it's doing something and get rid of the code....

The 20+psi boost spike was caused by the fact that the wastegate line had popped off one of the plastic fittings. With the wastegate line unattached there was no pressure to tell the wastegate to open, therefore I ran boost until something else stopped me. But, since the computer isn't controlling boost, and it can see that it goes higher than the stock boost setting, would that throw a code 44?

I believe it to be a stock turbo. Now, it wasn't efficent up through that range. It was just blowing hot air, but the gauge was registering as beyond 20psi. I think it's my altitude + low compression that saved me. But again, it was merely a spike, NEVER EVEERRRRR ran it like that for any period of time.

That does indeed sound like what I'm looking at. Now, back to the question at hand. Would that throw a code 44?

Timing mark - Go figure. I'll check that tomorrow. Codes - If resetting the codes goes like this: - Key off - Green Plugs in - Start car - let run a minute - turn all the way off, remove key - unplug green plugs --> Connect Read Mem plugs, read codes... Then I did that, those are the codes I got. Disabling fuel cut - I've got no clue how this was done, there's a solenoid of some type on the passenger firewall that's completely unplugged (bare pneumatic ends (2 or 3) expose, no tubes) but other than that, that's my best guess.... I'll post pics of it later, maybe it's the solenoid that's causing the diff lock not to work... HOWEVER, I do know that @ ~22-25psi there is a jerk from the turbo. On the frontage roads once, I nailed the throttle headed back to work, boosting along happily when I get a hugggge jerk. I've got no clue what it is. But I've felt fuel cut before in a Mk3 Supra. So, on a hunch I look down at my boost gauge and nail it. Reaches 19psi before I decide that's enough for me. So, if I do have fuel cut it's in excess of 1.5bar (21psi)...

Alright, more fun from me. I dug more into the RX (For those that missed the first segment, 1988 EA82-T, d/r ft4wd w/diff lock, MT 5pd.) only to find the following, First, The mystery Fuse (Click it, I got a "too many images in your signature or in your previous post" message so I made this a link) ... I noticed this little black box chilling on the strut tower. Curious, I opened it to find a blown, 15amp fuse. I replaced it, however, I don't see any large difference now. I turn the Diff. lock switch to On and it makes no noise (Still have to diagnose the Diff Lock, it doesn't seem to work, no dash lights either), however, I then turn it off and hear a nice click from the engine bay. Being by myself, I've got no one to help me discern where the click comes from. Second, Where the **** is the timing mark on this crank pulley? I spend 25mins w/a timing light attached trying to find it, to no avail. Just those two holes on the left of the pulley, and I don't know if they're there for a reason or just there to be there. Third, I spent a little bit of time chasing down the infamous White Read Memory connectors. I looked and looked and looked. I found some random connectors but none seemed to have a mate to plug into. So, on a whim, I connected these two black connectors: I then turn the key to On, and what do I see? The O2 light flashing in a very pattern-esque method. I write down the codes: 21 23 32 42 44 Now, the only error code list I can find that even lists #44 is This one for the MPFI 88+ Vehicles. So, I go by its list... 21 - Coolant Temperature Sensor or Circuit 23 - Air Flow Meter or Circuit (Exc. Justy) 32 - Oxygen Sensor or Circuit (No. 1, Right Side, On SVX) 42 - Idle Switch or Circuit 44 - Wastegate Duty Solenoid (Turbo Models) Hmm.. Now, this seems a tad funky. The list mentions an SVX code. The RX is not an SVX last time I checked.... So, I'm a little confused. Also, #44, the previous owner disabled the fuel cut and I run the boost up to 10psi (7.7:1 compression + 5280ft elevation makes it a dog off boost). Could this be causing the code 44? As for the others, (if the black connectors + the list is accurate) I'm at a loss. I'm new to Subaru's.... Thanks! -James W.

I still want a DP.... header isn't that apeasing...

Any photos? I'm a little leery to just randomly connect any of these loose harnesses together under the dash w/o knowing which is which...

Shadow, Thanks again! I'm coming to expect some good posts from you. The information has been quite handy.

I got that much. I'm just confused as to where the read memory connectors are in the RX. Once I figure this out, I plan on a writeup w/pics.