LSx Harnesses and Computers
Let 150Tunes.com satisfy all of your LSx harness and programming needs!
We specialize in standalone LSx (1998 and up) swaps into hot rods, desert race trucks, off-road ‘buggies’ and making that ‘weird’ never heard of swap look and work like it was factory! Even daily drivers!
If you're ready...
If you already know what you want and are ready to get it shipped out....Box up the harness, PCM and TCM with cash, check (personal check will need to clear before we ship your harness/PCM/TCM back - $25 charge if it isnt honored by your institution for whatever reason) or money order (make payable to DiffsOnly.com) and a piece of paper including:
- Clean your harness before sending it in! Take it to the car wash and spend $2 and 10 minutes cleaning it - use soap and water! If you don't, and it's a greasy/muddy mess, we will tape over the dirt/grease or charge you $100 to have it detailed before we will even start on it. Don't wash internal TCM's (inside Trans type). Just double/triple zip lock bag it.
- Donor rig information - What the motor and trans came out of, VIN is very helpful. If you don't know, that's ok, just let us know on the paperwork.
- Recipient rig information - What the motor and trans is going into. We also need to know about the rig. What tire size, gear ratio, VSS (pulses per driveline revolution, NOT pulses per mile), etc. And especially if you are adding a hot cam, increasing compression ratio, power adders (turbo, supercharger, nitrous, etc) - NOTE: At this time we are not tuning forced induction, nitrous, speed density through the mail. We'll gladly do it here in our shop, on our chassis dyno. Some guys will throw an aftermarket throttle body, injectors, cam, etc. at their motor all at the same time. Save your $'s and don't have us tune it through the mail. You are far ahead to contact a local dyno shop and have them fix you up. We can take care of some things, but when you can't see the rig or do any data logging, chances are the more changes that are made the more difficult it will be through the mail.
- What you want done - IE delete VATS, remove emissions, enable PCM controlled fans, firmer shifts, etc. Removing emissions is only legal if being used off-road only. Regardless if your city/county doesn't do smog checks, there are still Federal Regulations in place! Check your local laws if you are not sure. Anytime we remove ANY emissions, the setup is then for Off-Road Use Only. We are not responsible for anything if you choose to drive this setup on the road.
- Your expectations - Some people are looking for good fuel economy, or are racing their rigs. Just let us know what you are expecting the outcome to be and we'll taylor it to your needs.
- I need to know the part number of your injectors, MAP sensor, MAF sensor and o2 sensors. I don't need to know what they should be (finding the part number on Google or RockAuto), I want to know what they actually are. If you don't have them that's fine. We just won't make any changes that concern them. These items come from GM with part numbers on them and is typically 8 digits long. RockAuto has genuine GM/ACDelco parts cheap. You may even be able to find a 5% off coupon on the internet.
- And of course your information - ie name, return shipping address, phone number and email address.
...Remember, most of the information we are asking for is to make sure your swap will be effortless and run/drive properly. The more info we have, the better we can determine what you have is compatible. If you give us no information, we don't assume anything, and won't make any changes!
DO NOT PACKAGE HARNESS/PCM IN PACKING PEANUTS!!! IT WILL RUIN CONNECTORS AND/OR PCM/TCM!!
Most harness/PCM combos are $425. Most PCM only tuning is $165. Both including return shipping to the lower 48 states.
Then send it, along with paperwork/instructions and payment (made out to DiffsOnly), via UPS (DO NOT USE FeDex or USPS!) to:
6002 E Alki Ave, #6
Spokane Valley, WA 99212
If you use anything besides UPS, your package will most likely NOT be delivered! We are not responsible for any packages lost OR returned!