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Old 05-15-2000, 08:20 AM   #1
Marius
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Member#: 38
Join Date: Jun 1999
Location: MI
Question cams for the 99 RS?

I know that there is a company that builds flat four subaru engines.
I'd like to stay n/a, but get some more power. Camming seems to be a possiblity, but I would need to stay streetable. Any suggestions?
Marius
99 RS blue
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Old 05-15-2000, 09:16 AM   #2
Strepto
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2001 Arctic White
Camaro SS #1800

Post

It's my understanding that Rallispec is the only company working on cams for the 2.5L
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Old 05-15-2000, 10:31 AM   #3
tulit
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09 STi
White

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If you know what you want, you should be able to get a custom set machined...
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Old 05-15-2000, 10:57 AM   #4
Hucker
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Post

JUN-USA makes cams for the Impreza.....One of the guys on this board (colman) has them, you need a new ECU in order to get the functionality from them. If you get in contact with him, I think he would be more than plased to help you out.
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Old 05-15-2000, 02:01 PM   #5
N/A
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2003 Echo-daily car
silver

Post

Rallispec was working on a set. Apex Suspensions already makes a few different models. JUN makes cams but yes you will need other parts to go with it. Be careful when picking a cam. With a low redline you may not get large increases in hp simply because you can't rev it past 6500rpm.
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Old 05-15-2000, 03:12 PM   #6
bill harvey
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Garnet red pearl

Post

Hucker colman has cat cams not jun cams
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Old 05-15-2000, 03:58 PM   #7
Maxtastic
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2000 GF
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Post

Define Streetable ?
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Old 05-15-2000, 05:20 PM   #8
Impy
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Post

where the powerband is not all the way up in the 6000 rpm range.... like near redline
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Old 05-15-2000, 06:19 PM   #9
bill harvey
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here is the problem with colmans
they are so readical that the stock sensors can't read them thats why they need the ecu replaced.. thats not streetable
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Old 05-15-2000, 06:55 PM   #10
colmanchan
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Talking

Bill is right. In fact I'm waiting for the "LINK ECU" which Mike Shields is going to get it for me. It's more like a piggy-back type ECU which connect to your orginal computer and it's cheaper than TEC 2 or other programmable replacement ECU.. Anybody got any information about this LINK ECU throught the internet? I'm really not sure what type of Link ECU is he getting me.. casue there's so many kind of Link ECU around.. e.g. Potssium Link, FM Link , Miata Link, Intercept Link.. but I'm sure what Mike is getting me is for Subaru. Anybody have any knid of information about this ECU at all??

sincerely,
Colman

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Old 05-15-2000, 07:15 PM   #11
Joel Gat, 1.8L
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Link ECU = BAD BAD BAD BAD.

Anyone who says otherwise has never tried anything else or is seriously on drugs. Guess what? Minnam spent how long working on making a Link work? Was it close to a year? I believe they finally gave up. It's a stupid, horrible system. Wanna hear a horror story? My friend has a turbo miata. We made the mistake of tuning the Miata during the day time. Oh boy! What a mistake! At night, the air got colder. That means the air got dense. That means more air got into the engine. Whee! Guess what that means? The ENGINE WENT LEAN AND STARTING PINGING LIKE NUTS! Why? The link uses a MAP sensor with NO TEMP SENSOR. So it has NO CLUE how much air is going into the engine.

More fun facts? You have to program every single data cell manually, with a handheld keypad. YOU CAN'T DISPLAY YOUR ENGINE PARAMETERS MORE THAN ONE CELL AT A TIME!!! Holy crap is that annoying. But the worst part of the whole LINK piece of crap is that you just plain have to tune your freaking car every single day. I watch as these schmucks with LINKS go to autocrosses and waste their entire morning tuning the LINK for track conditions. Then, at lunch, they're back to tuning again. Why? Because it's warmer outside after noon than before!

What's the fix? Tune your car on the coldest possible night during the winter, and live with the fact that you'll be running rich all day and all year long. Otherwise, retune you car for every change in temperature (retune one data cell at a time, that is) that's more than about 5 degrees.

Needless to say, of all the people I know who have even touched a LINK, we've all sworn that we will never ever do it again, even if we got the link for free. Now, the fact that the link costs as much as the haltec and about 2/3rds of what a tec-ii costs, just makes the Link that much more retarded.

After reviewing the several options for ECUs, I'm down to deciding between the MoTeC and the TEC, and I'm leaning strongly towards the TEC. For a mere $700-$1000 over the LINK, you get an ECU that WORKS, can adjust itself for night, cold, hot, rain, whatever, it works, you can daily drive it, it works, it can run safely and you don't have to worry about the car, it works, and you don't need to suppliment it with a set of ignition coils (since if you add power to the car, the stock coils kind of suck, and the TEC comes with coils while the Link and Haltec and others do not).

Anyway, I've already gone too far. The LINK sucks. And all those versions of the link? They only describe the wiring harness that comes with the link and the baseline program that comes with it. So a MiataLINK has a harness to connect to a Miata and will run the miata engine (in stock form) somewhat poorly, but it will start. The PossumLINK has a harness for a turbo subaru (not a US subaru) and some program that should work if your car is setup exactly like the ones at PossumBorne and its the same temperature and humidity and you use the same gas and every other variable remains constant.

Joel
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Old 05-15-2000, 07:29 PM   #12
Wreckleford
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Post

Not to put you down or anything or to say that the Link ECU is good, but I want to make two comments:

I have read so many times on the net that Motec, Link, Haltech, TEC II etc. are crap because so and so put one in and blew his engine. In all of these cases I am willing to bet that the fault was due to improper programming rather than a real fault in the product. I do agree though that the if the Link has no temperature sensor than it is not much use to anyone.I really can't imagine why a manufacturer would make a programmable ECU that cannot acurately estimate the amount of air coming in to the engine.

Many U.K. Impreza Turbo people are using the Possum Link with apparently great results. I have never heard of anyone having any serious problems. I would imagine that the Possum Link uses a temperature sensor though.
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Old 05-15-2000, 09:16 PM   #13
Hucker
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Post

Impy, I'm not quite sure on what your definition of streetable is. If your going to use this car for your 20,000 miles per year car, yeah cams aren't a good idea. But if you want a big performance increase, these cams would be a good idea.
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Old 05-15-2000, 09:55 PM   #14
Impy
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Location: Toronto, ON, Canada
Post

but if they're high overlap and high duration that would mess ur low end and idle... u dont really want that on a street car... thats y they came up with vtech... and in colmans case... having a cam with the powerband inthe 6k rpm range with 6500 rpm ceiling is not exactly cost effective...
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Old 05-16-2000, 12:54 AM   #15
Impy
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Post

But those cams arent streetable...
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Old 05-16-2000, 02:09 AM   #16
colmanchan
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Location: Canada
Post

I know it's not cost effective with by putting a new computer into this car. In fact,I had just phone cat cams in Belgium, they agreed to develop a milder set of cams for my 98 base on the OEM cams. They are using new billet cams, not regrind cams. I shall send them my 98 OEM cams to them tomorrow morning by UPS and they will received it in two days. Hopefully they shall sent it back to me early next month. I
hope this will benefit some NA enthusiast here. Their tel no is 32-33664040.

thanks.

sincerely,
Colman
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Old 05-16-2000, 04:34 AM   #17
BoomerRS
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98 RS
****in Rally Blue

Talking

I am interested in staying N/A and have been watching this thread and similar ones closely. Everyone, please keep us updated on your projects. There is some great stuff being done .
My $.02

Boomer
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Old 05-16-2000, 07:31 AM   #18
ColinL
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Location: Wichita, KS and Whoring, OT
Vehicle:
'03 Evo, Rice White
'01 Erion CBR 929

Question

You've having custom cams ground by a company in Belgium? Did you make any attempt to get this done through one of the many stateside companies?
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Old 05-16-2000, 10:59 AM   #19
Joel Gat, 1.8L
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Post

Wreckleford,

I know people who have blown engines with just about any ECU. However, the Link ECU is tuned through a handheld unit that allows you to view one data point at a time. Regardless of everything else, that should tell you enough to know that it's not a serious tool, but a toy.

That people are having success is a misstatement. Has anyone else noticed that all the top cars in Europe are pushing incredibly massive horsepower? Like 300-350ish? Anyone notice that these are cars that have had tuning developements over a period of 8 years (since MY93). Did you also notice that the non-turbo, low-rpm, big clunky 2.5RS engines with 1st Gen turbo kits and some ECU tuning are pushing the same power?

That's a sign that either people like Shiv are super geniusses (no disrespect, Shiv, but I'm voting "no" to that possibility) or that they are using better tools. It takes skill and knowledge to tune an ECU, but the TEC allows Shiv to "tune" while the Link does not allow the rest of the world, basically, to tune.

Note that Shiv was one of the first Miata folks to break 300 hp. They were all putzing around with their silly Links and wondering whether they had reached the "edge" with their 250 hp cars. Shiv popped a TEC into his Miata, broke 300, and suddenly the floodgates opened. I do not believe there are any 300 hp Link-Miatas, but there are many 300 hp TEC or MoTeC Miatas.

As for a temp sensor in the Possum Link, I don't know. The Miata Link does not have one, but Bill Cardell says he will try to remove the EGR circuitry and replace it with a temp sensor. So far, nothing yet. But that was just one example. There are many other problems with the Link.

So in the end, the Link gives you the tools you need to know that you're lacking proper tools. The TEC and MoTeC give you the proper tools.

But we went off topic...

Joel
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