Thread: DHP Tuner inputs/outputs?

Anyone have a schematic or know what the input pins into the DHP Tuner are? OR does anyone know where a off-board data cable for an 04+ can be found? Thanks.
Also, I'm having a hard time getting my laptop to recognize the DHP Tuner Interface. ANyone have any thoughts? Thanks again.

i cant remember off hand the layout for the inputs but i think it is 1-3 and a ground? should be a sticker saying 1 2 3 G IIRC.

as for the off-board cable... are you asking about an off-board used to flash a PCM outside of the car? if that is what you need i dont think they are sold anywhere. they are home made. i have one that i made. if you want i can make you one too. you will need to get a power supply though or i can buy one and include it in the cost.

what serial connection are you using? they only recommend the keyspan. i tried a cheep usb to serial for use with my new laptop that doesnt have a built in serial. the cheep one didnt work so i had to get a keyspan. worked perfict. hope this answers your ?'s

Not sure what USB to serial I have. It's the one that came with my Tuner. Is the plug on the side of the Tuner (G321) used? I can't find anything about it in the User's Guide. And yes I would like an off-board cable to flash a PCM outside the car. I just need to know what wires go to what pins on the Tuner. There's a bundle of wires coming out of the PCM and only 15 going into the Tuner. Or only 4 + ground with a USB coming from the computer. I can make my own IF I had the wiring diagram. Or how much is a cable from you for a 04+ and one for a 97-03 also? Thanks

Bump... Anyone know?

the 123G on the side if for a wide band if i can remember correctly.


i had to buy a certin usb serial port, and download the software so it would communicate from my computer to the pcm. i had alot of issuies getting started myself.


this might help, The Best Tuning Site in the World - Unreal Portal they could probably help you with an offborad also.

Thanks!!!!

DOHCZ34 makes offboards, they work well.

The pins on the side are for inputs, such as a wideband.

To get access to some of the download sections of the powrtuner.com site you have to request it from one of the moderators. The site is a good source of information, but you may have to do some searching on your own as there are not a lot of people checking in everyday.