UPDATE, 10 16 10 Porken power chips , how to install them 85/86/86.5 - Rennlist - Porsche Discussion Forums

Go Back  Rennlist - Porsche Discussion Forums > Water Cooled Technical Discussion Areas > 928 Forum
Reload this Page > UPDATE, 10 16 10 Porken power chips , how to install them 85/86/86.5
Notices
928 Forum
Sponsored by: 928 Specialists
Sponsored by: 928 Specialists

UPDATE, 10 16 10 Porken power chips , how to install them 85/86/86.5

Reply

Old 09-30-2010, 09:51 PM
  #1
Mrmerlin
Petie3rd
Rennlist Member

This Post Sponsored by:
Dow Corning® & DeoxIT®
Thread Starter
 
Mrmerlin's Avatar
 
Join Date: May 2004
Location: Philly PA
Posts: 20,849
Default UPDATE, 10 16 10 Porken power chips , how to install them 85/86/86.5

Warning , in the last two pictures the chips are not fully seated,
the white dots are correct but the chips should press down till the shoulders are touching the pads.

I took the opportunity to get a set of chips for my early 86 928S, from Porken.
The chips are easy to install it will take an average owner about 2 hours if you have all the things necessary.
A set of Porken power chips S300
A 1987 fuel pressure regulator.
A fresh MAF
A fresh O2 sensor
Installation requires removal of the computer from the passenger side footwell, MAF removal, and FPR removal.
Disconnect the battery first.
Then mark the connectors for the computers, the outer computer is the EZF the bigger one is the LH.
Once they are removed then take the computers out of the mounting bracket.
Mark them so you know what computer is what.
Carefully bend the tabs on the EZF back with a small screwdriver
Carefully bend the tabs back on the LH and remove the 2 screws on the front by the connector securing bracket one scew holds the metal connector securing tab and one is under the tab, ther are also 2 screws on the back of the base these must also be removed.
Once both computers are opened the pictures will show you where the chips are.
Note there is a white square on the board this is to indicate where the small cutout on the end of the chip lines up.
The EZF chip is easier to find as it has no cover, mark the chip prior to removal.
The LH chip is hidden with a black plastic cover, the cover is removed after the board is removed from the base plate To remove the board bend the plastic tabs to free the board.
The new chips come in a base holder leave the base holders on both of the new chips.
To remove the chips first ground yourself to the work area then with a small screwdriver gently pry one end then the other till the stock chips are free. match the new chip to the correct computer, note the small cutout on the end of the chip, it goes over the white square painted on the board.
Once the new chip is installed make sure it is evenly seated. do both computers and leave the cover off of the LH computer the new chip will contact the foam rubber on base plate, verify that the chip is still evenly pressed after mating the LH board to the base. Reinstall the screws and the cover and the metal securing tab on the LH .
Bend the tabs back on both boards, install the computers in the car.
Next remove the aircleaner base and remove MAF.

Next remove the FPR on the RR fuel rail use some rags to catch the fuel about 6 oz of gas will spill,
small rags are better as they can be placed in smaller spaces.
After you have swapped out these parts install the FPR and MAF ( note make sure the fuel lines are in good condition) the fuel system will be running at a higher pressure from stock.
Connect the battery and start the car inspect for leaks.
If thats good then install the aircleaner then road test.
You should find a smooth idle and more midrange power as well a bit more kick on the top end.
Good luck any questions feel free to ask
Attached Images            

Last edited by Mrmerlin; 01-12-2012 at 12:09 PM.
Mrmerlin is offline  
Reply With Quote
Old 10-01-2010, 01:15 PM
  #2
Mrmerlin
Petie3rd
Rennlist Member

This Post Sponsored by:
Dow Corning® & DeoxIT®
Thread Starter
 
Mrmerlin's Avatar
 
Join Date: May 2004
Location: Philly PA
Posts: 20,849
Default

I have to drive the car more, but i am impressed with the stronger mid range torque,
and the idle is smoother for some reason, possibly the higher fuel line pressure?
I have not had any time to get to a WOT setting YET!
Thanks Ken for another great product
Mrmerlin is offline  
Reply With Quote
Old 10-01-2010, 01:23 PM
  #3
Mike Frye
Craic Head
Lifetime Rennlist
Member
 
Mike Frye's Avatar
 
Join Date: Sep 2006
Location: Jersey Shore, USA
Posts: 8,799
Default

Great write-up.

I can't believe the improvements in all ranges of operation.

Ken also added a function where it doesn't just drop off the map when you lift off the throttle, it kind of 'eases' down to idle. I think it gives it a much better feel and it's better for shifting.

I don't know if it's required, but when combined with a set of crossovers the improvement is incredible.

I can also attest to the power of the s300s 'Racer' version that allows for non-resistor NGK plugs with a wider gap.

I can also tell you that if you reverse the chips you may think you've blown something but you've actually just wiped the chip. It's bad, but not catastrophic. I've been swapping and programming chips since I was in HS and every once in a while I'll get distracted and - WHOOPS. (thanks for your patience Ken! and for the great work on these mods)
Mike Frye is offline  
Reply With Quote
Old 10-01-2010, 01:24 PM
  #4
atb
Addict
Rennlist Member
 
atb's Avatar
 
Join Date: May 2001
Location: Puyallup, WA
Posts: 4,809
Default

Stan,
Is there some procedure or voodoo incantation that someone is supposed to do when handling chips on an IC board. I know nothing about electronics but I've heard stuff about dealing with laptop computers and people replacing ram chips, and some sort of static electricity build up causing problems. Don't know if those are issues in dealing with 928 brains, ever heard of anything like this? Probably not an issue.
atb is offline  
Reply With Quote
Old 10-01-2010, 01:32 PM
  #5
Landseer
Addict
Rennlist Member
 
Landseer's Avatar
 
Join Date: Sep 2007
Location: Frederick, Maryland
Posts: 11,045
Default

^^Good question, i'd like to know too.

Stan, how 'bout doing a write up on use of the 32V'r for advance and retard.
Landseer is offline  
Reply With Quote
Old 10-01-2010, 02:46 PM
  #6
depami
Super User
 
depami's Avatar
 
Join Date: Jul 2009
Location: Cleveland, MN
Posts: 2,369
Default

^^^^^^^Definitely an issue!

Whenever dealing with any electronics (with the exception of most passive components) static discharge can be a problem. Always ground yourself before handling. Ideally wear a proper ground strap connected to a ground mat on your work bench. Always place chips on antistatic material and put boards in antistatic bags.

Cloth seats and circuit boards can be a big problem as well. Ever get a shock when closing the door after sliding out of a cloth seat vehicle?

Slide across a cloth seat with a circuit board in your hand and plug that board in and there is a very good chance that board could be toast.
depami is offline  
Reply With Quote
Old 10-01-2010, 06:12 PM
  #7
Pcplod
User
 
Pcplod's Avatar
 
Join Date: Apr 2010
Location: Sedgwick, KS
Posts: 400
Default

Originally Posted by Mrmerlin View Post
Next remove the FPR on the RR fuel rail use some rags to catch the fuel about 6 oz of gas will spill,
small rags are better as they can be placed in smaller spaces.
After you have swapped out these parts install the FPR and MAF ( note make sure the fuel lines are in good condition) the fuel system will be running at a higher pressure from stock.
MrMerlin, thanks for the writeup. I have been planning on doing this to my 86.5, but haven't gotten there yet.

In the last part you say after you have swapped out these parts install the FPR and MAF. What parts are you swapping out before installing the new parts? The old FPR and MAF...or did I miss something else that needs to be swapped??

Thanks, Paul
Pcplod is offline  
Reply With Quote
Old 10-01-2010, 09:21 PM
  #8
Mrmerlin
Petie3rd
Rennlist Member

This Post Sponsored by:
Dow Corning® & DeoxIT®
Thread Starter
 
Mrmerlin's Avatar
 
Join Date: May 2004
Location: Philly PA
Posts: 20,849
Default

Paul, I got a fresh rebuilt MAF unit and also a new FPR to replace the stock part.
this will give the max performance possible with this setup

Adam as long as you can work on a surface where you have shorted yourself to it, you should be OK for handling the chips,
though a ground strap is Ideal its not necessary.
Mrmerlin is offline  
Reply With Quote
Old 10-09-2010, 10:19 AM
  #9
Mrmerlin
Petie3rd
Rennlist Member

This Post Sponsored by:
Dow Corning® & DeoxIT®
Thread Starter
 
Mrmerlin's Avatar
 
Join Date: May 2004
Location: Philly PA
Posts: 20,849
Default

Mrmerlin is offline  
Reply With Quote
Old 10-09-2010, 10:58 PM
  #10
Imo000
Captain Obvious
Super User
 
Imo000's Avatar
 
Join Date: Aug 2003
Location: Cambridge, Ontario, Canada
Posts: 20,400
Default

[QUOTE=Landseer;7940160........Stan, how 'bout doing a write up on use of the 32V'r for advance and retard.[/QUOTE]

It comes with very clear instructions. Why would you need a write up?
Imo000 is offline  
Reply With Quote
Old 10-10-2010, 08:21 AM
  #11
tilac999
User
 
tilac999's Avatar
 
Join Date: Aug 2010
Location: South Shore, MA
Posts: 644
Default Will the chip work on an '85 Euro?

The "euro" LH and EZ-K ecu's are identical to the US ones, including the chips. The difference is the coding plug tells the ecu to use a different fuel map and inputs to govern idle speed and base mixture.
tilac999 is offline  
Reply With Quote
Old 10-10-2010, 09:41 AM
  #12
Hilton
Super User
 
Hilton's Avatar
 
Join Date: Jun 2006
Location: ɹəpun uʍop 'ʎəupʎs
Posts: 6,010
Default

Originally Posted by tilac999 View Post
The "euro" LH and EZ-K ecu's are identical to the US ones, including the chips. The difference is the coding plug tells the ecu to use a different fuel map and inputs to govern idle speed and base mixture.
Tilac, the chips have fuel maps and ignition timing aimed specifically for the 5.0L 32V engine using an S4 fuel pressure regulator.

Technically, I believe they will work in the LH2.2 ecu's found in the 16V cars, but the different displacement, cams, intake, exhaust, valve sizes, number of valves etc. would mean the results would be um.. an interesting experiment

Also, the quote you took from my post in the other thread was actually regarding LH2.3 and EZ-K, which are the ecu's found in 87-95 928's (early LH cars have EZ-F, not EZ-K). I pointed that out in my next post in that thread. Per John Speake, there are some differences between the hardware of the LH2.2 ecu's used, but programmatically the chips are functionally equivalent (i.e. maps and parameters in the same place) so chips can be swapped between ecu's.
Hilton is offline  
Reply With Quote
Old 10-10-2010, 10:12 AM
  #13
Mrmerlin
Petie3rd
Rennlist Member

This Post Sponsored by:
Dow Corning® & DeoxIT®
Thread Starter
 
Mrmerlin's Avatar
 
Join Date: May 2004
Location: Philly PA
Posts: 20,849
Default

Chris i dont have a 32 Valver tool ,
i have been using the cam cover off to set the cam timing with a used belt
Mrmerlin is offline  
Reply With Quote
Old 10-10-2010, 11:17 AM
  #14
tilac999
User
 
tilac999's Avatar
 
Join Date: Aug 2010
Location: South Shore, MA
Posts: 644
Default

[QUOTE=Hilton;7962650]Tilac, the chips have fuel maps and ignition timing aimed specifically for the 5.0L 32V engine using an S4 fuel pressure regulator.

Technically, I believe they will work in the LH2.2 ecu's found in the 16V cars, but the different displacement, cams, intake, exhaust, valve sizes, number of valves etc. would mean the results would be um.. an interesting experiment



Hilton,
Thanks for the clarification. Seems the differences would be too great between the 16V and the 32V. Would be a very interesting experiment indeed. One of the new chip's features that really interests me would be the gentle reduction of fuel during lift-off/shifting. The abrupt fuel cut-off of the stock chip when lifting makes it hard to be smooth. Thanks again.
tilac999 is offline  
Reply With Quote
Old 10-10-2010, 11:33 AM
  #15
John Speake
Addict
Rennlist Member
 
John Speake's Avatar
 
Join Date: Feb 2002
Location: Cambridge England
Posts: 6,800
Default

The problem of chip interchangeablilty is only with the early LH2.2 used on MY 84 16v Euro's only. This has the part number 928 618 123 00. This has a different clock crystal and a completely different software structure to the 85/86 Euro 16v and USA 32v.

The 85/86 Euro 16v LH2.2 are 928 618 123 02. USA 32v version is 05. The Euro version doesn't include the components for ISV and O2 sensor.

So although you could use Ken's 32v chip in an 85/86 16v Euro LH2.2, and the car will run, the fuel maps may still require adjustment. And the O2 loop would need nulling.

All the EZ-F ECUs are interchangable, 84-86.
John Speake is offline  
Reply With Quote
 

Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Dwizle
924/931/944/951/968 Forum
11
11-18-2016 11:54 PM
Dwizle
924/931/944/951/968 Forum
0
11-12-2016 04:13 PM
corellian vette
928 Forum
4
08-09-2016 12:46 PM
harveyf
928 Forum
13
10-07-2015 05:59 PM


Thread Tools
Search this Thread
Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump


All times are GMT -3. The time now is 05:47 AM.


Copyright © 1998 - 2017 Rennlist.com We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: