Instructions for Steve Wong Chip Needed

[SRISER]

Just got a SW Chip from a fellow Pelican but forgot to ask for the instructions. Does anybody have them on PDF or can scan them and send them to me?

I would be most grateful!!

[Hugh R]

Installation Instructions (U.S. spec 930/25)


The following are instructions for the installation of the performance software chip in the Motronic type 2 control unit, and is appropriate for the Porsche 911 3.2L (84-89).

If you have any questions, feel free to contact 911Chips at support@911chips.com or call (323) 953-0722.

Before beginning, you will need the following items:

• Your Porsche performance chip
• An extended 10 mm socket (about 2” long), socket wrench
• Small flathead screwdriver
• A tank full of 91 or higher octane gasoline, or 93 octane if ordered as such

LOCATION OF THE CONTROL UNIT:

The type 2 Motronic DME control unit is an unpolished silver metal box approximately 6”x5”x2”. It has the word “MOTRONIC” either stamped in the metal or clearly displayed on a decal affixed to the top of the unit. It is located under the driver’s seat.

REMOVAL OF THE CONTROL UNIT:

Slide the driver’s seat all the way back, and also upward for electric seats. Remove the floor matt that covers the Motronic control unit. The unit is held in place at the corners with four 10mm nuts and washers. Remove them with a 10mm socket and ratchet. The wiring bundle is held in place with a heavy steel strap that is also held down by a 10mm washer and nut. Lift the unit up and off the studs.

CONNECTOR REMOVAL:

Hold the control unit in one hand and press on the steel retaining tab that holds the electrical connector. Remove the plug by rotating out from the box so that it pivots on the end away from the retaining tab. When reinstalling, remember that this hook is installed first.

OPENING THE CONTROL UNIT:

Straighten the metal tabs on the bottom of the box and remove the cover from the unit. You can use a knife to pry them up enough to get the small screwdriver under them. Extreme care is required when separating the two circuit boards! At the front of the board is the wiring harness connector block, and at the rear is a wire ribbon cable. The boards are held together by two plastic posts at each end of the wire ribbon cable. (Fig. 1) The best way to separate these posts is to place a small flathead screwdriver in the slit on the post and twist while gently pulling the boards apart. You will have to use some force to separate the boards, but be careful not to pull the boards too far apart once they release or you may rip the wire ribbon cable. It is best to pull at the connector, not at the board itself. Some DMEs may have an additional pair of posts at the opposite end of the circuit boards. If there are, please separate them accordingly also. After the boards are separated, lift the board up at the rear and slide it back away from the wiring connector block. If it is glued to the block, carefully pry the glue away from the plastic and wiggle the board go release it. DO NOT USE A KNIFE OR A RAZOR BLADE, AS IT IS POSSIBLE TO DAMAGE THE TRACES ON THE CIRCUIT BOARD



FIG.1 FIG. 2

Open the two boards like a book and lay them flat. Locate the memory chip on the board that you just unfolded. It will be raised off the board a bit more than the other chips. If your car has the stock factory chip currently installed, it will have a silver foil sticker on it with a sequence of numbers going something like 1267355xxx. (FIG. 2)

CHIP REMOVAL:

If your car is an early 84 model, your chip may be soldered in place, in which case, your chip will have to be desoldered from the board, and a 24 pin chip socket put in its place for easy chip installation and removal. These DMEs are designated with Porsche p/n 911.618.111.01 on top of the box. The stock factory chip will have a silver grey label with black numbers on it, generally beginning with “1267355.”.

Before removing the chip, note the orientation by locating the end of the chip, which has a small notch in it. Your performance chip must be installed with its notch facing in the same location as the factory one was. To remove the chip, slide a small screwdriver under the chip and carefully lift upwards, changing ends frequently to avoid bending or damaging the pins. (MAKE SURE YOU ARE NOT PRYING UP ON THE SOCKET WHICH IS SOLDERED TO THE CIRCUIT BOARD) Install the performance chip by gently pressing it into the socket after having made sure that the notched end is correctly oriented and that all pins are correctly inserted! If the chip is installed backwards, damage to the control unit could result! Should you forget the orientation of the chip, just remember that the notch faces towards the side of the box that it is closest to. There is also a notch on the chip socket illustrating the notch orientation. Slide the top board back into the connector block, line up the two boards, and then press down on the top board until the two plastic posts snap together. Replace the cover and reinstall the control unit.

POST INSTALLATION AND IDLE SPEED ADJUSTMENT:

Store your factory chip in a safe place using the static conductive package your chip came in. Basic idle and fuel mixtures are pretuned, just make sure your oxygen sensor is connected. Unless you are specifically supplied with a European spec performance chip, your chip is designed to work optimally with all emissions controls in place and in conjunction with normal engine settings. If for some reason your vehicle will not start, or does not run properly, check over all your work, making sure the wiring connector is plugged in all the way and even if the chip is pushed down firmly into the socket. If you experience and difficulties during this installation or afterwards, please contact support@911chips.com or call (323) 953-0722.

Your chip may come with an idle ignition timing advanced a two to three of degrees higher than stock for an improved idle and off idle clutch engagement. This may raise your idle speed a little and may cause it to hunt until it is readjusted. If so you may wish to readjust the idle speed down at the throttle body adjustment screw. (FIG.3) Turn clockwise to reduce, counterclockwise to increase. If have any difficulty, please contact support and a chip swap can be arranged with one that has stock idle timing.

FIG.3 FIG. 4

DISCONNECT PIN 10 WIRES: (California spec. cars)

On the wiring harness to the DME unit there are two independent brown jumper wires which you can usually see taped alongside the harness only a few inches away from the end of the harness connector. At the end of each of these two wires is a white plastic insulated male and female connector respectively. (FIG. 4) These may be connected, specifically on cars originally delivered to California to make the car more emissions compliant. 49 state cars should already have these disconnected. If they aren’t already disconnected from each other, please do so now. Leaving these connected with your performance chip will cause light amounts of undesirable engine knock. If your car is a European/ROW spec Carrera, please disregard these instructions.

A FEW CHECKS ON ENSURING OPTIMAL PERFORMANCE

Frequently, due to age and wear, many Carrera 3.2s are not realizing their full performance potential because the throttle is not opening completely. To inspect this, have someone fully depress your accelerator pedal while checking to make sure the butterfly at the throttle body is opening completely. If incomplete opening is noticed, adjustment will have to be made at the throttle linkage under your car on the left side of the transmission. Adjust and shorten the linkage to make up for the excess slack.

After checking and adjusting your throttle linkage as necessary, you should also check that the full throttle microswitch is properly adjusted. The microswitch engages closed when the throttle butterfly is at 90% of full open and signals the DME to switch to the full throttle fuel and ignition maps for full power. The switch is the 2”x2”x1/2” black module on the right side of the throttle body. (FIG. 3) Use a multimeter or continuity tester to ensure that the contacts switch closed when your throttle is within the last 10 degrees of full open. Adjust if necessary. Enjoy!

[SRISER]

Perfect. Thanks!

[mwbaum]

short version.....remove DME...take out old chip...put in Steve's...reinstall DME....check seatbelts, brake-linings, and tire pressure....put on helmet....go for a drive and HOLD ON!

[SRISER]

I believe it!!

[targa911man]

Sam, you will love it.

[Steve W]

My customer support staff is unreal. Remind me to put something in extra in your year end bonuses this year!

[MXMARK]

Steve W, Year end bonus? I thought you already gave us the bonus in the chip mapping. It works great.
Thanks Mark

[SRISER]

Sorry, couldn't wait!! Installed in 30 minutes (or so). Car sounds even better now...a bit smoother. Don't have time to drive it tonight but am going on a nice drive tomorrow...will report back.

So now, with a single in dual out Dansk and Steve's chip, I guess I am around 234 HP from 217?

Steve: I may pull the chip and send it for an update still. I was just too excited to wait!