Why is Crome password protected? Crome is FREE software that without the hard work of many people wouldn't even be here. To give credit to its contributors, I (John Cui) password protected the installer to let users know where the software originated.

How come you just won't give out the password? The password is very easy to figure out and finding it is an excercise of one's willingness to learn more about Crome. Two hours of password hunting is the least one could do to show appreciation for the years of work incorportated into the software. And besides, it's fun!

Q: I want to get started with Crome and tune my car. What all do I need?

A: To datalog in Crome, you need to purchase a Crome Pro License. Make sure the PC you will tune with is the one you register.

Here is a list of all the hardware you will need:

Laptop: Over 400mghz and 128mb ram. Laptop speed WILL effect datalogging response time.

Wideband: If you want to log through the ECU, get something with a LINEAR wideband output voltage. This is IMPORTANT. Innovative, PLX, and Techedge all use this. Check this before purchasing!

Chip Burner: Whatever works. Moates=1 USB, which is nice because most laptops are basically running just USB ports as inputs. Willems work as well, crappy support for SST chips though. Also it requires a LPT port which most laptops are without now a days so BEWARE!

Emulator: (Optional, but required for Real Time Tuning) Two choices, Ostrich and Xtronics. Ostrich=newer technology, USB powered and run. Xtronics=Uses serial port, has been known to be buggy now and again. You can use serial to USB converter w/ the xtronics but its known to be very problematic

Datalogging cable: Basic options are to hack up a cell phone cable and rewire it, buy one already hacked up, or buy a serial cable and TTL to Serial adapter. There are tons of options. Moates.net has a couple of USB options.

Chipping Kit:

• 28 pin machined DIP Socket
• 28 pin ZIF Socket
• 4 pin CN Datalogging Header
• 0.1µf ceramic disc capacitors (qty 2)
• 1k resistor
• 74 HC373 chip

Many people seem to be having trouble with the AddExtraFeatures script. projekteg was nice enough to make a step-by-step writeup with pictures. Howto Add Extra Features In Crome

Q: I want to use the Boost Tools+ or ITB Tools plugins. Which ROM do I need to start with?

A: You need the JDM P30 "203" ROM, or any ROM derived from it. ("237" P08, for instance.)

Q: Where can I find stock ROMs to use with Crome?

A: The Wiki, in the library section under a topic called Ecu Definition Codes. (see http://wiki.pgmfi.org )

Q: I get a solid CEL when I edit a stock ROM with Crome. What things should I check?

A: Did you:
-Remove the checksum routine from the ROM?
-Disable any hardware features not present on your ECU (knock, PA, injector test circuit, etc.)

Q: Datalogging will not work for me after installing the plugin. What should I check?

A: Have you removed the checksum routine? Are you selecting the right com port?

Q: Datalogging samples very slow. Why is this?

A: This is dependant on your PC's hardware capibilities, as well as the RS232 to TTL (datalogging) cable used. See the following thread for more information: http://forum.pgmfi.org/viewtopic.php?t=6490.

Q: Datalogging plug-in or XXXXXX plug-in does not work with my P28 ROM; What do I do?

A: Most plug-ins support the P30 codebase. You will need to export your p28 tables, and then import them into a stock p30 rom.

To do this, open your P28 ROM or open a stock P28 ROM as new with Crome. Click File, then Export Tables. Give it a file name and save it somewhere you can find it easily. Next, click the open as new button (the icon directly below File) and open a JDM P30 (203) rom. Now, click File, then Import Tables. Open the file you saved from your P28 rom. Now all the maps will match the P28 rom. You can now use the included plug-ins. Be sure to disable knock and the speed limiter in the options menu.

An alternative P28 support method is to use the "237" code, which came in the JDM P08 D15B SOHC Vtec. It's essentially "203" code setup for a single cam. This ROM can be found in Ecu Definition Codes.

Q: I am changing my map headings and it doesn't change to what I want.

A: You CANNOT edit the column headings for the first and last columns in a ROM. You CANNOT edit the row headings for the first and last rows in a ROM.

Attempting to do so will produce unpredicatable results.

Q: How do program or read an EEPROM using the Burn1 directly from Crome?

A: Go to Settings and select Ostrich/BURN1 as your RTP hardware. Crome auto-detects whether Ostrich or BURN1 is connected so all you need to do when using BURN1 is to unplug Ostrich and plug in BURN1 in the same cable. Sometimes it takes a few seconds for the drivers to reload but once loaded, you can just click on 'Put' to burn the ROM into the BURN1 device. The only supported functions for the BURN1 unit is 'Put' and 'Get' which is to write and read respectively.

Q: How do I specify which chip I am using in the Burn1?

A: You can specify 27SF512 chips by going to Settings and selecting Ostrich/BURN1 as your RTP hardware. A little checkbox will appear on the right.