made my own offboard programmer

Posted: Wed May 26, 2010 9:18 pm Post subject: made my own offboard programmer

I cut off the blue C2 PCM connector and the OBD diagnostic port from the old car. Some wires, solder, and an old 12V wall wart have made me an offboard PCM programmer! It looks like crap but it works.

I had a spare PCM so I loaded up a bin that I did a MAF tune on. The load worked fine. I'll install it this weekend and do a CASE learn.
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1998 Silvermist GTP Coupe
Bone stock unicorn
1998 True Green Metallic GTP Coupe
Pullied, cammed, intercooled. With a kiddie seat. It once ran a 13 flat.
1998 True Green Metallic GTP Sedan (retired)
Stock: 14.33 @ 96.5
PB: 13.89 @ 101 mph

Posted: Thu May 27, 2010 1:25 pm Post subject:

Very crafty Mike.
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Good Bye.
BHO sucks.

Posted: Thu May 27, 2010 2:08 pm Post subject:

Thanks, I have a spare PCM plus a DHP v1.0
So I can keep the one in the car as a "gold" because I know it works, sell the DHP or keep it as a econd spare, and use the third for flashing new tunes as needed. Then if it bricks, I can always swap the gold back in.

Posted: Thu May 27, 2010 3:45 pm Post subject:

Care to make a little wiring diagram for what wires need to be soldered together?

I picked up the blue connector and OBDII connector the last time I was at M&M's, just need to find a 12v supply and figure out what wires need to go where.
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Posted: Fri May 28, 2010 9:14 am Post subject:

Posted: Wed Jun 02, 2010 8:29 am Post subject:

Wires r ghey.
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Hi, I'm Matt.

I'm the resident smartass and I have fourblack children: (ok, one's only half black..)
07.5 2500HD, Duramax, Edge Race Evo CTS, MBRP 5" Stainless, TransGo, Sleeves, EGR!, PCV
09 VRSCDX - Night Rod. Flat black, gloss black
02 Black Z06. All work done by New Era Perforamnce. 519/497 at the rear, 3100 lbs.
05 Arctic Cat Firecat F7 - Sold
07 Arctic Cat F8 Sno Pro - Smashed into 1000 orange pieces.

Posted: Thu Jun 03, 2010 7:30 pm Post subject:

2005 called, it wants its harness back. Razz

j/k, have fun with the new toy. For the little effort they take to build, it's nice and convenient when you're dealing with some oddball chassis/engine builds.
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2004 Regal GSX - YouTube channel Stattama T67BB, A2W IC, ST5, heads, L32, GMR diff/chain (11.46 w/ Z7 T66, IS3t cam)
2006 Grand Prix GXP - K&N intake and mufflers only, basically stock for me
2012 F-150 EcoBoost SuperCrew 4x4 - stock DD and roadtrip vehicle
1998 Daytona GTP #838 - I/C*d MP112 L26 - Rust in Peace, engine saved

Posted: Tue Aug 03, 2010 4:10 pm Post subject:

I finally got around to building mine. It reads the PCM just fine using HPTuners, haven't tried to write to it yet (need my keyspan adapter before I can use my DHP) I could only find a 2.5A supply so hopefully that'll do the trick.

Cleaned up all the extra wires

Sexy

Posted: Tue Aug 03, 2010 10:11 pm Post subject:

much prettier than mine.
i only used a 1A supply.

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