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Old 02-12-2001, 06:08 PM   #1
Skirvdawg
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Join Date: Dec 2000
Location: Virginia Beach
Vehicle:
2002 VW Jetta Wagon
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Question Link or ECU for N/A?

I've seen a lot written about management systems for cars with turbos, but I'm wondering if there is anything out there that will help increase the power of an N/A engine. While I hesitate to call it as simple as a power-chip, but I guess that's what I'm looking for. Do they exist for our cars? If so, anyone know where I can find one. Thanks.
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Old 02-12-2001, 06:16 PM   #2
BMW Man in 2.5RS
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Join Date: Feb 2001
Location: Clemson U for Now But im from Baltimore MD
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2001 Impreza 2.5RS
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i Also have a similar question. I have been reading some of the post but they seem only to confuse me as i am new to the suby comunity. In my bimmer you were able to replace the chip and get a higher rev limit and about 25 hp at the fly dyno proven. I have seen people talk about tourque chips, tec-II, apexi itc, etc. but as austin powers once said "What does it all mean." Is there a way to raise the rev limiter on this car. And i am also unfamiliar with messing with timing. What does retarding the timing do and how would a knock sensor management system help. PLease answer some of my questions in a semi technical-semi human form please. 86 bimmers computers were a lot easier. Also does anyone know the stock compression of the ej25
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Old 02-12-2001, 06:24 PM   #3
Midwayman
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Post

Ill give it a go...
There really isnt a "chip" for the RS. There are an assortment of other devices that do similar things. (Yes Im aware of the TC2, and its more a piggy back than a chip)

Rev limit- right now you need a replacement ECU. Rumor is that Trey is working on something to fix this. (Id love to see 6750....)

Timing- Retard reduced knock (bad) and power. If you use 92 octane fuel, you can advance the timing and gain some more power. NA typically wont need a knock sensor, at least not until you do alot to the engine.

compression- stock on the 2001 is 10:1 I believe. A fairly high compression motor.

On the RS most of those gadget do very little for you until you've gone turbo or heavily modified your NA car.

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Old 02-12-2001, 08:02 PM   #4
BMW Man in 2.5RS
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i dont know if i read somthing wrong but i think i read that the my99+ with the sohc said that they run a little lean top end. If this is true wouldnt an afc help to fix this even if it doesnt ad any hp
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Old 02-12-2001, 08:05 PM   #5
BMW Man in 2.5RS
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and i didnt see it in the previous post but what is a torque chip. Is that a whole new ecu
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Old 02-12-2001, 08:47 PM   #6
Midwayman
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MAF based RS'es can benefit from a AFC if you have an intake. However your profile says you have a 2001?
The Torque Chip is a wire in piggy back that does alot of various things, but the sole retailer cannot tell us excactly what it does. Smells of snake oil to me. Ill stick to makes who *will* tell me exactly what they are doing to my car.
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Old 02-12-2001, 09:49 PM   #7
5 Door Man
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None of you guys ever read Turbo magazine, do you? The January '01 issue, page 56, "Turbo Tested: Link Engine Management System: Plug-in tunable ECU motherboard for Acura Integra, Mazda Miata, Nissan Skyline GTR, Maxima, Diamond Star, and Subaru". Tunable by a hand held programming unit, or you can get more advanced with a Laptop. Runs about $1300, installs into the stock ECU box, just a repalacement, but programable, ECU. Very cool.

That's still a costly item, but VERY cool!! I'd be interested in combining one of these with a Cobb Tuning Stage I power package on my 1.8L and see what kind of gains I could get.
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Old 02-13-2001, 04:15 AM   #8
S.Damery
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For whatever it's worth, I emailed JC Sports last week about their Torque Chip, This is the info that I got from Kevin:

"The torque chip improves the rate of acceleration and overall drivability. It adds about 12-15 hp in the mid range from about 2000-5000 RPM. It adjusts the fuel and ignition curves and allows the computer to learn faster. It has a switch on it to turn it off when going in for service"

Sounds intereting enough for me, although I too am kinda leary about popping a gadget into my car without knowing exactly what it does. There are guys on this board who claim it does work, do a search for "torque chip". It costs $250.00 and they have a 30 day money back guarantee, both which seem pretty reasonable to me. I'd still like to see some dyno results-1/4 mile times before I buy it. Hope this info helps. Anyone with any more info on this gadget?
-Shawn
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Old 02-13-2001, 05:53 AM   #9
Talon
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You guys might like to check these sites:
www.powerchip.com.au and www.airpowersystems.com.au

They both sell "piggy-back" chips, which will fit the EJ25.

The Unichip (from airpowersystems) especially has a good reputation in Australia. It is fully programable, and can relatively easily be transfered between vehicles.

Ben.
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Old 02-13-2001, 06:33 AM   #10
scoobiejosh
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Vishnu (member Shiv) has designed a TEC II system that will work awsome for all motor cars. True it is not a piggy back but the stock ECU is left in to controll everything but fuel and timming. Very driveable from what i understand. It is roughly the same cost as the link system and you get an ignition upgrade and it porbibaly works much better/faster. That said im not much of a "chip" fan myself.

Josh
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