AO

My goal has not to make more power from tuning, but rather, make my system (twinscrew SCer) safe. I could make more power but it wouldn't last.

tommi nylund

One engine tuning 'veteran' once told me that the Motec is the best cheap engine management system. I just didn't get where he got this cheap from?

The basic box is really expensive and if you want some extras
it seems to be always $1000 / feature.

But the hardware in Motec is very bulletproof!!

I, personally would turn my eyes to Australia and look for Autronic and ViPec. Both are VERY good, reasonably prices & very well equipped. My choice would be Vipec 88, but at the end it is only a matter of taste.

Sharktuner is REALLY hard to beat!! For $920 and being plug-and-play it is really a bargain and will do all that engine tuning which I dare to say 90% of 928 enthusiasts will ever need?

928mac

Umm according to their page its a bit more then $920
[quote from sharktuner.com]The basic LH2.3 SharkTuner for 87-95 cars is $1750US, £850UK and 1275 Euros delivered. The EZK option is $300US extra. The built-in Tech EdgeWB02 board is available at an additional cost.[quote]

hacker-pschorr

To answer the cheap question, go to a PCA race event and ask around what the various systems cost. I don't remember the name, but the 911 in GT1 with a FABCAR chassis (one of the few cars that can out run Mark Anderson) has a system that starts around $10,000.

Our resident Mad Scientist Todd was chatting with their systems expert at the track recently. Needless to say, if money were no object Todd would be hooking that system up to his two cars, no doubt about it.

For the budget minded, the best systems IMO are MOTEC, AEM, and Autronic.


My own personal resources include people who know those three systems like the back of their hand (they also know Tech3, MegaSquirt etc...) yet after hours of debating, comparing the pros / cons I still went with the stock LH/EZF from a EuroS with a SharkTuner for my 81.

When it comes time to convert my 79 out of the stone age, I'm still not 100% sure what I'll go with. Probably Autronic or AEM based on advanced features that will be useful on a dedicated track car.


With the SharkTuner available I see little reason to ever switch from the stock system on an 87+ car. Unless your goal is individual cylinder tuning like Todd is doing, which a lot of aftermarket ECU's cannot do either.

Hilton

You're looking at the version 1 Sharktuner. V1 can (with modules) do all LH cars (84-86 Euro 16V, 85-86 32V, 87-95 32V) and requires you plug into the ecu.

V2 (87-95 only) is $920, and after you fit the programmable units to the ecu's, you plug into the diagnostic port (under cover by your passenger seat on MY89+)

http://www.928gt.com/ps-40591-30-sha...ash-tuner.aspx

jorj7

Probably because you're looking at the original Sharktuner page, look at Sharktuner
2 for an 89.

http://www.jdsporsche.com/Mk%202%20sharktuner.html

928mac

Thanks Jorj,
I was told that I will also need the wbo2
(You will also need a wbo2 for any serious tuning)
What is the wbo2

hacker-pschorr

Wide Band Oxygen Sensor - you need one (or nine like Todd) of these to tune with any system.

928mac

Is this all I will need if I decide to go with a SC down the road

hacker-pschorr

It's a good idea if you plan on making any kind of modificaitons.
Plenty of people have a SC setup without any kind of O2 gauge or data logging. If you buy a complete system like Murf or DR, it's not necessary (I personally recommend that you do, just my opinion).

Some people don't want gauges everywhere and / or the $$ and time to install data loggers.

There are quite a few threads discussing the ins / outs of installed an O2 and the various brands.
If you are a paid member, you have more search options

RKD in OKC

A WBO2 is a measurement device not a tuner it works in conjunction with other tuning hardware/software. It tells you HOW rich or lean you are running as opposed to the stock oxygen sensor which tells only lean or rich. Most WBO2 have datalogging which is nice but I rarely used the WBO2's data logging because my ECU tuning hardware/software included output from the WBO2 in it's own data logs.

Also, if you are tuning with data logging, you don't really need to mount any driver visible gauges.

928mac

Thanks guys, the extra search option is a good reason to be a paid member

hacker-pschorr

Check the FAQ, at least "back in the day" you had more expandable search options as a member.

The thought process behind this is to prevent spammers from data harvesting.

tommi nylund

Sharktuner Mk2 still seems to be $920 at JDSPorsche.....I maybe just wasn't clear about which version I was talking about. And that is about 1/3 money you would have to spend for good aftermarket system.

- Hacker-Pschorr: I believe my friend was talking about some Bosch related system which was as expensive as you stated. He said that those systems make Motec, Autronic, etc look like dual carburetors.

I just don't see any point for an individual who tune his/her car for hobby to benefit anything if upgrade even from let's say Autronic->Motec. (where you more than double the price, I believe?) It is different if you race your car as your business....

What I would like to have for 928 with SC or turbo engine is ignition control from map input, not load/rpm like ST. But maybe you can live without that also if not trying to get all possible power out?

ptuomov

On WBO2 sensors: They are clearly useful in getting the car drivable and in the ball park tune, but how is the AFR reading going to tell me whether I am going to make more knock-free power at 11.1 or 13.2 AFR, when the ignition advance is optimized to each AFR?

I don't think there's a book where you can look up the target AFRs. Well, that's not entirely correct: There are books, but they are full of BS.