LSX Specialties

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LSX Specialties We specialize in GEN3/4 LSX engine wiring and computer tuning. Any harness work, New and Used. Custom Tailored to order. I build new as well.

Remote tuning, DYNO tuning, Street Tuning. I specialize in reworking stock GM harnesses. When reworking your stock harness, I will make it complete and simple for any level of mechanic to easily install. It will have a 4 wire hook up, Battery power, Ignition power, Fuel pump power and ground. I leave out the engine light, TCC and tach wire for you to connect to your dash cluster. I can add relays and wire electric fans controlled by the computer if needed for additional charges. I will leave the signal wires out if you decide to wire them yourself. All of my harnesses come with an 8 port fuse box and fuel pump relay as a standard. Any transmission wiring will also be included. If you have me work on your PCM, I can make all the changes you will need for it to run properly without all emissions and rear O2 sensors. I can adjust speedometers, rev-limiters, Fan temps, injector size and anything else you may need.

I get asked a lot of questions about my tuning background and abilities. Here is some info on me. I’ve been into this fo...
10/29/2026

I get asked a lot of questions about my tuning background and abilities. Here is some info on me.

I’ve been into this for 15yrs this year. This is my car pictured, aside from all the courses I’ve taken over the years, it has been my biggest teacher. I’ve had multiple engines and transmissions, manual and automatics in it. I’ve used all the GEN3 and GEN4 ECUs, Small engines, big engines, big cams, stock engines, boost from blowers and turbos. Stock parts, aftermarket parts. Tons of track time and dyno time learning what works the best and what is a waste of time and money. It’s been really good to see all this happen first hand.

I remote tune regularly for several shops across the country, and lots of home builders doing it themselves. I have my own chassis dyno here for all my local tuning.

So when getting a base tune, bench tune, unlock, mail in tune, box tune, flash or whatever you want to call it, it comes from 15 years of real experience. I can do anything needed that’s possible in your ECU. Anything with scaling, E85, boost or whatever you are doing.

Hope this answers some of the questions I have been getting. I appreciate all the comments, messages, emails, calls, texts and referrals from you all!!

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REBUILD, 2007 L92/6L80E harness. $475 for this process to rebuild your core harness. 🇺🇸🇺🇸🇺🇸🇺🇸🇺🇸🇺🇸🇺🇸🇺🇸🇺🇸
10/27/2026

REBUILD, 2007 L92/6L80E harness.

$475 for this process to rebuild your core harness.

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Before and After v***r blasting the used ECU connector and ECU. The extra little steps make the difference!🇺🇸🇺🇸🇺🇸🇺🇸🇺🇸🇺🇸🇺...
10/26/2026

Before and After v***r blasting the used ECU connector and ECU.

The extra little steps make the difference!

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2007 LS2/T56 harness built 7’ long !!
10/23/2026

2007 LS2/T56 harness built 7’ long !!

10/23/2026
On all my GEN3 rebuilds, the ECU connectors get v***r blasted and the wires going back into the connector gets new termi...
10/23/2026

On all my GEN3 rebuilds, the ECU connectors get v***r blasted and the wires going back into the connector gets new terminals crimped on.

REBUILT, GEN3 engine/transmission wiring. This was sent to me as a stock harness. This is my standard rebuild. Seamless ...
10/22/2026

REBUILT, GEN3 engine/transmission wiring.

This was sent to me as a stock harness. This is my standard rebuild. Seamless loom, eliminate all unnecessary extra wiring, relocate ECU, add OBD2 and fuse block.

$450 for this process

NEW, LS3/TR6060 harness done and shipped. Always build in Seamless loom, no upchargeAlways build to your needs, no adapt...
10/19/2026

NEW, LS3/TR6060 harness done and shipped.

Always build in Seamless loom, no upcharge

Always build to your needs, no adapters

$775 for this specific harness

I’m located in Medford Oregon.
541-821-2993 Call 9-4, pacific timezone or Tex anytime.

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New, Holley Terminator X harness built. This was built for a 24x engine, EV6 injector, DBW throttle. I use shielded wire...
10/16/2026

New, Holley Terminator X harness built.

This was built for a 24x engine, EV6 injector, DBW throttle.

I use shielded wire for the Cam, Crank, throttle body and Gas pedal sections.

This was $850.

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LSX Specialties is located in the Pacific Timezone. West coast time. (Medford, Oregon)I’m usually opening the shop up ar...
10/12/2026

LSX Specialties is located in the Pacific Timezone. West coast time. (Medford, Oregon)I’m usually opening the shop up around 8:30am. That’s when I get the shop phone and start replying to calls, emails, text messages, Facebook messages, instagram messages.

If you call my shop phone 18 times between 9:00- 9:30 AM from Florida, that means it’s 6:00-6:30 AM here. I will not get your 18 missed calls for about 2 more hours. I’m not avoiding your calls, I’m just not in the shop yet.

I appreciate the calls! Keep them coming. Thank you all!!

LSX Specialties
541-821-2993

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Address

Medford, OR
97504

Opening Hours

Monday 9am - 5pm
Tuesday 9am - 5pm
Wednesday 9am - 5pm
Thursday 9am - 5pm
Friday 9am - 12pm

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