Mega Squirt conversion
Burning Brakes
Joined: Jul 2003
Posts: 1,166
Likes: 0
From: IL
Hacker,
I did not mean to make the process of tuning too simplistic. I understand that there are many hours needed of testing, analyzing data and making corrections to get the tuning right.
And its possible that using sharktuner's software is not as easy as using a late model tuning software made for newer engines. The brains are obviously not as advanced as todays EFI brains.
Is there a really well done write-up on the various steps to sharktuning a supercharged engine? A general DIY manual on the subject that explains all the details?
EDIT: I did find one link:
http://www.jdsporsche.com/faqs/PEM%2...0Issue%201.pdf
I am sure people would be interested in how the baseline calculations are figured, how the initial inputs are entered, and how the continuous process works until its completion.
Guys who go the MS route are definately going to also be a great help to all 928r's if they can share alittle knowledge about the process.
I did not mean to make the process of tuning too simplistic. I understand that there are many hours needed of testing, analyzing data and making corrections to get the tuning right.
And its possible that using sharktuner's software is not as easy as using a late model tuning software made for newer engines. The brains are obviously not as advanced as todays EFI brains.
Is there a really well done write-up on the various steps to sharktuning a supercharged engine? A general DIY manual on the subject that explains all the details?
EDIT: I did find one link:
http://www.jdsporsche.com/faqs/PEM%2...0Issue%201.pdf
I am sure people would be interested in how the baseline calculations are figured, how the initial inputs are entered, and how the continuous process works until its completion.
Guys who go the MS route are definately going to also be a great help to all 928r's if they can share alittle knowledge about the process.
Rennlist Member
Joined: Feb 2002
Posts: 7,060
Likes: 42
From: Cambridge England
There is also more information here
http://www.jdsporsche.com/faqs/User%...0EZK%20211.pdf
and here
http://www.jdsporsche.com/faqs/LH2.2...Issue%202b.pdf
Have you read all three ?
http://www.jdsporsche.com/faqs/User%...0EZK%20211.pdf
and here
http://www.jdsporsche.com/faqs/LH2.2...Issue%202b.pdf
Have you read all three ?
Burning Brakes
Joined: Jul 2003
Posts: 1,166
Likes: 0
From: IL
Not yet, thanks for the links John.
What is the latest news and products on Sharktuner(s) for the 86.5 US engine, as far as cost and these instructions go? Something was mentioned about a $500 after conversion, but I wanted to make sure what you were talking about.
What is the latest news and products on Sharktuner(s) for the 86.5 US engine, as far as cost and these instructions go? Something was mentioned about a $500 after conversion, but I wanted to make sure what you were talking about.
Administrator
Joined: Aug 2001
Posts: 27,401
Likes: 3,041
From: Up Nort
Seeing these MS threads is getting me motivated. I'm taking the "easy" route since DIYTune sells a PnP box for the 302 in my Cobra.
Nordschleife Master
Joined: Apr 2003
Posts: 9,601
Likes: 39
From: Abbotsford B.C.
Rennlist Member
Joined: Feb 2002
Posts: 7,060
Likes: 42
From: Cambridge England
The Mk2 St will initially be for PEM equipped 87-95 cars. If sufficient demand we will develop PEMs for the earlier cars as well.
Didn't mean to hijack the Megasquirt thread - sorry.....
Thread Starter
Racer
Joined: Jul 2008
Posts: 363
Likes: 0
From: south shore MA
I finished my IAC vavle. It is working great on the bench. This is a direct bolt in replacement for the bimetal OEM unit, it will also use the stock hoses. My stepper IAC will let me set any amount of air bypass based on coolant temp. A picture is below.
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Joe Kucinski
Intermediate
Joined: Feb 2007
Posts: 44
Likes: 0
From: Dallas, TX
I assume you make use of the knowledge over on the various MSEFI forums. I found this thread of interest, although if you go with 36-1 it may not apply :
http://www.microsquirt.com/viewtopic...orsche#p147305
I'm in the midst of MSing a motorcycle.
http://www.microsquirt.com/viewtopic...orsche#p147305
I'm in the midst of MSing a motorcycle.
Administrator
Joined: Aug 2001
Posts: 27,401
Likes: 3,041
From: Up Nort
I assume you make use of the knowledge over on the various MSEFI forums. I found this thread of interest, although if you go with 36-1 it may not apply :
http://www.microsquirt.com/viewtopic...orsche#p147305
I'm in the midst of MSing a motorcycle.
http://www.microsquirt.com/viewtopic...orsche#p147305
I'm in the midst of MSing a motorcycle.
Haha, look what I found
http://www.microsquirt.com/viewtopic...21554&p=136740
Three Wheelin'
Joined: Sep 2002
Posts: 1,477
Likes: 2
From: No Turbo, No SC
A few questions to the 928 pioneer’s who are using the MS systems.
Who bought their units pre-built and who bought and soldered it up from kit form?
What is the difference between the stock IAC and the one being used with the MS system?
Could the stepper IAC be used in a stock 928 without use of the MS system?
Cheers, T_MaX
Porsche Car Underground
Who bought their units pre-built and who bought and soldered it up from kit form?
What is the difference between the stock IAC and the one being used with the MS system?
Could the stepper IAC be used in a stock 928 without use of the MS system?
Cheers, T_MaX
Porsche Car Underground
Nordschleife Master
Joined: Apr 2003
Posts: 9,601
Likes: 39
From: Abbotsford B.C.
from 78-84 they are completely different, not even close to the same.
from 85+ from what I can find they are completely different.
Could MS run them, yes it probably could, it is open source after all, but you may have to modify the internals for it.
No, not without some form of aftermarket computer to control it.
Three Wheelin'
Joined: Sep 2002
Posts: 1,477
Likes: 2
From: No Turbo, No SC
Nordschleife Master
Joined: Apr 2003
Posts: 9,601
Likes: 39
From: Abbotsford B.C.
1978-1984 are what is known as an AAV (auxilary air valve) it is more a mechanical valve that has a bi-metallic strip which is heated by both the engine and a power source. When heated to stops extra air.
1985+ are stepper motors (1985/86 are slightly different I believe from 87+). These are completely electrically controlled with 3 wires.
1985+ are stepper motors (1985/86 are slightly different I believe from 87+). These are completely electrically controlled with 3 wires.