JDI

JDI Welcome to JDI (Justin Durand Ignition & Tuning), located in Rapid City, South Dakota.
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We offer fully programmable "plug & play" custom ignition systems for snowmobiles; including mobile DynoJet chassis/track dyno services to the Midwest.

04/19/2026

Something a little different, beyond the normal 2 skis and a track...check out Casey Hauck Performance (Casey and Davin) with their new 250cc kart. JDI has been working with them on the ignition system setups for a few years now. With their tuning skills and Davin's driving skills, they have been racking up the wins all over on the track!

This season, they will be racing a 250cc and a new 500cc "Widowmaker" powered kart!

Both karts feature our JDI "total loss" ignition systems with MSD 42921 coils, MSD plug wires, 3D mapping with TPS, and controlled electronic Power Jet all through the ECU.

04/13/2026

Congrats to Aaron and Nicky Pisa with their "JDI Powered" 800cc Twin Polaris. They took multiple class wins at the MESC Giants Ridge Hill Drag event!

This sled features our first JDI-SFI individual cylinder firing ignition system for the Polaris Twin...no batch firing, no waste spark!

04/08/2026

A little more wiring to finish for the datalogger and electric pumps. Then pull out the rouge bars and buffing wheels...it's almost ready to put in some work on the JDI Mobile Track Dyno!






🔥🔥🔥NEW PRODUCT ALERT!🔥🔥🔥*** Polaris XCR 800 Owners***This is our new JDI coil adapter, for MSD 42921 coils! This allows ...
04/03/2026

🔥🔥🔥NEW PRODUCT ALERT!🔥🔥🔥

*** Polaris XCR 800 Owners***

This is our new JDI coil adapter, for MSD 42921 coils! This allows direct plug-in with the correct rubber triangular connector to the OEM wiring harness; for upgrading from "stock coils" to the MSD 42921 coils. This adapter can also be used on the JDI Polaris XCR 800 wiring harness!

No cutting and ugly butt-connecting on the stock harness, plug and go! Comes terminated with correct connectors for MSD coils, and heavy common 14-AWG ground wire. We can build these to your desired length specification. $74.95, includes shipping

Custom length MSD 8.5mm spiral core wires??? We can handle those as well...fully terminated and tested!

As the winter race season comes to a close, we want to say a special thank you, to all of our "JDI Powered" customers fo...
04/01/2026

As the winter race season comes to a close, we want to say a special thank you, to all of our "JDI Powered" customers for such a successful race season!

Whether it was snow drags, speedruns, or JDI track dyno tuning; our customers had so many victories in various platforms and organizations.

There is no off-season for JDI...this is the time when we innovate, improve, and put in the hours to get our customers faster! One thing is for sure...you haven't seen anything yet. Tic Tock.

03/13/2026

Big Congrats to the "Thick-n-Thin" Racing Team out of Grand Marais, MN (Stacy, Devyn Deschampe, Colton, and Auston)... This has been a long time coming for this crew, and we have much more to go!

They earned multiple class wins and podium finishes with their "JDI Powered" Ski-Doo "Triples" in 700-MOD, 800-MOD, and 900-MOD.

They will be back on the JDI Mobile Track Dyno Cell before next season, to capitalize on those efforts.

Congrats!

(Video from the last race of the season at the Poplar Haus)

Another one ready to head out the door!!!This is our JDI-SFI standalone ignition system, for the Arctic Cat "triples"!Th...
03/02/2026

Another one ready to head out the door!!!

This is our JDI-SFI standalone ignition system, for the Arctic Cat "triples"!

This one has been optioned out with all of the goodies, including "flip on the fly" second map option, for driving back to the pits with a safe low timing curve. We have also terminated this harness for the MSD 42921 coils (as shown in the picture)

Our system converts from the traditional OEM batchfire, to a more efficient, and power gaining individual cylinder firing!

This particular JDI-SFI system for both the Cat and Ski-Doo triples, has delivered huge gains and tuning options on our JDI Mobile Track Dyno Cell, and in the field... The race results are starting to speak for themselves!

Another dominant weekend of racing for "JDI Powered" racers!Chris Pisa traveled to the MESC Hugo, MN snow drags, and too...
03/01/2026

Another dominant weekend of racing for "JDI Powered" racers!

Chris Pisa traveled to the MESC Hugo, MN snow drags, and took "1st Place" in 900-MOD. We've said it before, this sled is straight off our JDI Mobile Track Dyno Cell, and is paying off huge, with the tune and clutching setup.

Bill Bennett traveled to Hugo, MN as well, and took 3rd Place in 900-MOD with his "JDI Powered" 800cc Polaris Wedge chassis with an XCR powerplant. This sled came off our JDI Mobile Track Dyno Cell over 2-years ago, and constantly racks up the victories!

Aaron Pisa and Nicky Pisa traveled to the We**ie Roast in Cable, WI on Friday, and took 4, 1st Place victories with their sleds. Aaron uses our first JDI-SFI sequential fired ignition system on his Polaris 800 Twin "Pro Mod"!

Congrats to all of you.

02/25/2026

We have had a lot of Messenger inquiries on Chris Pisa "JDI Powered" Yamaha Vmax-4 from MESC TripleFest.

This is another video we have of Chris going rounds in the 900-MOD Class. Remember..."spinning ain't winning".

This ignition tune and clutch setup is straight off the JDI Mobile Track Dyno Cell, and features our JDI-SFI "MAX4" 4-channel total loss ignition system.

Another victory to add!Big Congrats to Taylor Welsh on his "JDI Powered" Polaris IQR chassis with XCR 800 powerplant. Ta...
02/24/2026

Another victory to add!

Big Congrats to Taylor Welsh on his "JDI Powered" Polaris IQR chassis with XCR 800 powerplant. Taylor took 1st Place in ProMod 1000, with his 800cc sled, at the SOS Snow Drags!

Congrats again Taylor from JDI!

Address

Summerset, SD
57702

Opening Hours

Monday 9am - 5pm
Tuesday 9am - 5pm
Wednesday 9am - 5pm
Thursday 9am - 5pm
Friday 9am - 5pm

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