Haltech, LinkPlus, or Autronic for stand alone EM

93forestpearl · Post by **93forestpearl** » Wed Dec 03, 2008 3:33 am

I'm kind of torn.

I like the idea of repinning the connectors because of the OEM-ness of it. The downfall would be how much freedom you have in mounting the box. I had mine so the plugs faced downward and I could add and change things fairly easily (lol) or unplug it if I needed to do some welding on the car.

On the other hand, the adapter would give me freedom of location. The downfall would be the process of making it not failure prone.

Post by **Legacy777** » Sat Dec 13, 2008 4:30 am

I hear ya Dan.

Only issue I can see is that on some of the connectors the outer connecter pins are different size.

93forestpearl · Post by **93forestpearl** » Sun Dec 14, 2008 9:27 am

MMMk. The issue depends on what kind of loads those pins are trying to carry, and on what end is the bottle neck. I don't like trying to run a significant amount of current through am undersized connector. I've been there, done that and failed.

Post by **Legacy777** » Mon Dec 15, 2008 7:20 pm

Not sure I said that correctly.

You know on some of the ECU connectors the outer most holes/pins are a tad larger? The wiring is more or less the same, and the pin size going into the ECU is the same....it's just pin type.

I am probably leaning towards making an adapter....but nothing is final yet.

Post by **Legacy777** » Thu Dec 18, 2008 7:05 pm

Well I bought the adapter, and will be going that route. It just offers a little more flexibility. Apparently Fine line Imports had one of these adapter boards from Link.....and Link no longer makes them. We'll see how it turns out.

93forestpearl · Post by **93forestpearl** » Thu Dec 18, 2008 9:28 pm

I'd like to see it in detail when you do get your hands on it.

Looks like I'll be pursuing this as a solo mission. I think I'll be alright though

Post by **Legacy777** » Fri Dec 19, 2008 7:05 pm

Yeah, I'll take a bunch of pictures.

I do think repinning shouldn't be too bad though.

Post by **Legacy777** » Tue Dec 30, 2008 5:11 am

Update today. I finally got around to drilling and tapping the intake manifold. I've been VERY thankful I had my old n/a manifold as a "test" manifold. I've tried different locations for both the vacuum/boost tap & IAT sensor.

I've moved the vacuum/boost tap to the center bottom of the intake manifold. I was going to put the IAT sensor off to the side on the driver's side. However I'm not sure it will get a good flow of air. I tried on my test manifold and it will fit at the top right after the throttle body. I would think this would be an ideal location. My only concern is the thickness of the manifold is thinner there compared to the side. However it should be fine.

I'm planning to finish tapping my EJ22T manifold tomorrow, so if anyone has any comments that would keep me from tapping the top, please let me know.

Here's some pictures

http://www.main.experiencetherave.com/s ... install/01

93forestpearl · Post by **93forestpearl** » Tue Dec 30, 2008 5:17 am

Nice. That's a bit cozy fit but it works, and is the best spot you can put it. On my 22T manifold, I had to space my coil out just a little bit for the fitting I put there, and I used left over seal/spacers for the timing belt covers, lol.

Also, I saw the pics of the adapter board you got on nasioc. Are you getting it bare like that? If so, I'm even more jealous.....

Post by **Legacy777** » Tue Dec 30, 2008 5:27 am

Cool, I'll plan to put it there. Will hopefully finish the manifold up tomorrow.

Yeah I'm getting it bare like that. I got it the other day, I just haven't had a chance to take any pictures. Once I have the manifold setup again, I'll move onto wiring

93forestpearl · Post by **93forestpearl** » Tue Dec 30, 2008 5:30 am

Cool. Glad to see you are finally making progress on the car.

Oh, btw. If you see any clean '92-94 Legacys for sale, lmk.

Post by **Legacy777** » Tue Dec 30, 2008 5:35 am

Will do!

Post by **Legacy777** » Tue Dec 30, 2008 9:54 pm

Dan,

I was talking with fineline, the guys who I bought the link board from about the IAT sensor location. They said they put it off to the side and haven't had any problems. They did make mention about putting it right there at the throttle body and the fact there's a lot of air passing right by there. I don't know if it would be a restriction or not.

Any final thoughts before I finish that part up?

Thanks

93forestpearl · Post by **93forestpearl** » Wed Dec 31, 2008 10:38 am

I dunno. That sensor is a fair amount more closed than the bosch unit I'm using, but mine sticks half-way across my charge piping right before the TB. I'm no fluids expert, but I often question what what people say without evidence. It also gets me into to trouble, so take it as it is. With the amount of airflow you are looking at, it honestly shouldn't be an issue. When I put my turbo into perspective, it is taking a whole minute to suck down a box sized 10x10x7.5 ft. That's really not that much volume in 60 seconds.

Or am I a dork? Probably....

Post by **Legacy777** » Wed Dec 31, 2008 6:05 pm

I hear you. I will probably put it at the top. My main concern about the side is eddie currents within the intake manifold that may skew the temperature. Plus I noticed on the driver's side of the intake manifold there's quite a bit of oil splattered on the inside, most likely from the PCV system. If I were to put the IAT sensor on the side it may be affected more by this.

Again, I may be trying to over complicate things.....but oh well....

skid542 · Post by **skid542** » Wed Dec 31, 2008 7:40 pm

FWIW, my opinion of your IAT sensor location is that it's a good spot right there on top and centered. You're in good clean air and the disturbance you are creating is symmetrical from left to right so you shouldn't have issues of one cylinder being favored due to your IAT.

I would also think that you'd want the priority to be an accurate IAT reading then a small restrictrion that could be 'accounted' for by 1 or 2 psi of boost. I'd also agree with your concern about getting any oil splattered on the sensor from the PCV system. That would be a small cummulative effect you may not notice until it threw off your reading to the point of causing a failure.

I wouldn't worry much about the eddie currents changing the temp reading though. In that small of a volume and with the sensor that tall, you're going to be well outside the boundary layer no matter where you put it and should only have a few degrees of temp. change anywhere within the system. You'd have more changes as a result of the localized pressure differences I think than anything - or was that what you meant?

Ultimately, my suggestion is there on top in front of the TB where you have it pictured. You'll have the most accurate response to changes in pressure and throttle in that position and I don't see any reasonable detriments to having it there.

Take it with the grain of salt my opinion's worth...

And I'm glad to see you making progress on the project.

Post by **Legacy777** » Sat Jan 03, 2009 2:39 am

I put in the center of the manifold. Got it finished today, and work bench cleaned up. I need to put the manifold back together and all the accessory stuff back on.

Next step is the wiring....have to do that before I put the manifold back on.

93forestpearl · Post by **93forestpearl** » Sat Jan 03, 2009 9:13 am

It would be nice if I had the option to put my sensor there, but I don't. My biggest issue was heat soaking from a hot engine after a short stop. My IAC valve pulled from the intake pre-turbo and the IAT sensor was right before the throttle body, so it wouldn't settle back until I actually drove the car. I intend on pulling my IAC feed from after the IAT sensor this time around. I don't know how fast acting your senor is, but you should be OK on hot start-ups since it should hopefully react fast enough with the amount of turbulence that should be in the plenum at idle. I guess we'll see.

Post by **Legacy777** » Sat Jan 03, 2009 9:47 pm

I didn't think about the hot start ups, but you're right. We'll see....

93forestpearl · Post by **93forestpearl** » Sat Jan 03, 2009 9:51 pm

If you use a 3D IAT compensation table you should be fine. I was not, and my issue was that the temp would correlate to a cell that was used under load. It would be lean on a hot startup for a little bit.

If you use a 3D table, you should be able to tune a specific cell for hot startups like that. I was in the process of that when I got hit.

Post by **Legacy777** » Sat Jan 31, 2009 6:12 am

Well I've been MIA for a while. Traveling for work.

I did some test fitting of the link in the stock ECU location and it really is just too damn tight to put it there and put the adapter harness. I need to find an alternative location. That's my next step. Find out where I can put it and then start the wiring.

93forestpearl · Post by **93forestpearl** » Mon Feb 02, 2009 5:46 pm

My friend put his Hydra where the air bag computer would be on an airbag car. I've thought about trying to find the aluminum plate of the newer cars and putting it down in the passenger footwell. Otherwise, I don't know. I can't really cross that bridge until I come to it.

Post by **Legacy777** » Mon Feb 02, 2009 7:02 pm

Yeah....I've thought about the passenger foot well area as well.

That's my next hurdle. I'll let ya know what I decide to do.

Post by **Legacy777** » Sun Feb 15, 2009 11:58 pm

Well I looked at ECU placement again yesterday.....thought I had a spot picked out, but after talking with Miles @ Fine line Imports, I'm not sure it'll work.

I was thinking of building a bracket and mounting the ECU above the amp under the driver's seat. I've got some pictures here

http://main.experiencetherave.com/subar ... nstall/03/

I did also look at trying to use the baseplate and setup to mount the ECU at the passenger foot rest area. I didn't really like how it was setup, but I didn't go to the point of pulling the entire thing. That is what Miles recommends. I'll probably try pulling the entire thing and seeing how it will fit.

I'm getting sick of this.....there's just no damn room left in the car to put all this shit. Getting a little frustrated I haven't found a decent solution I like, and that I don't have time to work on it. It's been sitting there for probably 4 months or so.

93forestpearl · Post by **93forestpearl** » Mon Feb 16, 2009 7:53 am

I'm going to say that I don't like the idea of mounting it right on top of your amp. The G2/G3 internal cooling isn't the greatest. If you take the cover off the ECU you'll see what I'm talking about, and that is the reason why they don't let you run under 5 ohm injectors. The output FET's are rated for a higher output current than those in the Hydra, but the cooling is not at the level that they can let people run low impedance injectors reliably. Mounting it above a major heat source could be problematic.

I've thought about adding a cooling fan to the case if I wanted run injectors that flowed over the 900cc units I have at the moment. The pluses would be the ability to run E85, easier time with low load tuning due to the faster response buy the injectors, and lower cost and easier time sourcing injectors. I'd have to be pretty damn sure my extra cooling would keep the FET's from failing though.

If you found the trim for the front part of the center council from a '93+ car, you'd have the room to mount it where the airbag computer would normally be. My buddy's Hydra is currently mounted there, and fits quite nicely. You would loose that nice little area though. The pre-airbag cars offer usable space right underneath the ash-tray that is used for the airbag computer.

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Haltech, LinkPlus, or Autronic for stand alone EM