srupp1969

Hi Guys,

TonyG over at the 944 turbo Forum has started a thread to discuss the possibility to use the LS1 PCM in the 944 turbo as it is a very performant management system for a reasonable price and easily tuneable with the HPTuners-software for N/A and boosted engines.
Given that the LS1 is a V8 as our engines, why no think about using it in the shark.

What is your opinion about using it in the 928 (maybe s4 and later) ?
Could it be possible ?
What has to be modified to adapt it in the 928 ?
What could be the benefits ?
What does the experts think?

Gentlemen, your opinions highly appreated !

Cheers
Stefan

AO

I think most of the people on this board who would be candidates for a tuning system have already found a soultion through the SharkTuner.

However to answer your question as to whether or not the LS1 engine managmenet system will work, I don't believe so, but I'll let the guys who are in the know respond directly as to why.

hacker-pschorr

The 944 guys have their own similar solution as the Shark Tuner:

https://rennlist.com/forums/6337126-post10.html

AO

Cool. I like that price point.

Korwen

The guys who have converted to Megasquirt end up doing DIY ignition and sensors, I don't see why a LS1 computer couldn't replace the MS, but then again I don't see what the benefit of it would be over the already-infinitely-tuneable MS?

Barry Johnson

I believe the GM 7749 is the ecu in question. There was a great write-up (now gone from my old link) that talked about using the ECU from a GM Typhoon for the 951 since it understands boost and is very tuneable, super cheap (somewhere around $200 brand new?), and can handle most "normal" guy stuff.

Check on that box and maybe it will work? I remember contemplating it waaaaay back in the day when my car actually saw pavement

Z

http://p-928.home.comcast.net/~p-928/749.html

123quattro

You could do it, but it would be a lot of work for minimal gain. You would need a 24x trigger wheel for the crank a half moon for the cam. Then they need to be phased properly in relation to each other so that sequential injection and misfire detection work. The knock sensors most likely wouldn't work since they are tuned specifically to the LS block.

The money you would save by going with an LS controller would probably be offset by the costs to make the custom cam/crank trigger wheels and the time use troubleshooting it. The best bet if you really want a powerful stand alone would be an Accel DFI. There are lots of other controllers out there, but that one is well respected and has been used on tons on high hp V8 engines.

srupp1969

Thanks @all for your feedback till now.

So basically this conversion would only be something for the enthusiast with a boosted setup.
What you have in your 928 s4 upwards is already capable to handle boost condition and is tweakable via the Sharktuner.

Stefan

Btw.: Great writeup !

aggravation

Didn't Carl from 928 Motorsports just introduce a kit like that but with the added advantage of being already designed for plug and play with the 928?

hacker-pschorr

With the Shark Tuner available, I see little reason to dump the factory LH / EZK system unless you go with something more advanced like Autroinc.

I don't see how it can be PnP for the 16V cars (not counting the 84-85 EuroS which uses LH/EZF)
At a bare minimum the CIS cars would need new fuel lines, rails and injectors. The L-Jet cars could be adapted, but I see little reason to dump the factory system unless you are also going with MAF or MAP to replace the barn door.

Lizard928

No point in going aftermarket and retaining a MAF.