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Cam and I had this idea that we could make a single store listing that would cover every possible combination for a customized 2JZ or 1JZ harness. We'd love for you guys to take a look and see if there are any other options we should add or if there's any other feedback. Thanks...

Hi Lrv, For 7MGTE harnesses are offering a refurbish, it's basically like a brand new harness except that there are a few connectors (TPS and Knock come to mind) that are discontinued and we cannot source new. So we do have to reuse a few connectors here and there but by and large it is brand...

HI Jeff, the change is not shown on the wiring diagrams, you are correct. However, it does exist in the real universe. It's been a thorn in my side for a while, thus why we've been trying to nail it down to a production date. Also, the 89.5 is unique, it's different than both the '89 and '90...

We all know of the differences between the 89 and 89.5 Supra (for me the big issue being the wiring harness), but does anyone know the production date that this change actually happened? I've been trying to nail it down. Originally I thought it was June of '89 but I've seen people with...

The results are in! The final answer is: The 2JZ will NOT fit into the FR-S without some modification to the sheet metal, with either an R154 or W58 transmission. As you can see in these pictures, the hood is hitting the timing belt cover and the crank pulley is touching the front crossmember...

The Tweak'd Performance FR-S...What it is, what it isn't. When the FR-S was introduced last year, I only had to take one look at it to know that it was going to be big. A lightweight, rear-wheel drive car for under $30k? Definitely. And expected, once we got our hands on one, we asked the...

Just to clarify, we are also building new 1JZ harnesses for either ECU in case that's what you need. We're open do building custom harnesses as well, such as for customers using the Pro-EFI. -Doc

Hey guys, just wanted to make sure you all knew that we are now building brand new 2JZGTE/MK3 Supra harnesses. Normally we have them in stock and ready to ship. Here are all the details: http://www.tweakdperformance.com/onlinestore/index.php?main_page=product_info&cPath=1&products_id=18...

That's an a/c high/low pressure switch. Don't need it. -Doc

If you need a hand with that engine harness just let me know. -Doc

We have found a much cheaper solution to this problem, a module that will turn the fuel pump off when the RPM signal from the igniter is lost. If you guys are interested let me know they are about $50. -Doc

IN case you get tired of the wiring, keep us in mind, we can make it plug and play and everything will work like OEM. -Doc

It's an EARLY Chaser 1JZ harness.

In case you decide it's not something you want to get into, let us know, we can make it plug and play for you. -Doc

We have a bunch of those connectors here, just let me know which one you need. -Doc

On the engine harnesses you typically have two power circuits, normally you will keep them separated. One powers the ECU and a number of things on the engine like the VSVs and whatnot, as well as the fuel pump. The other powers the injectors, coil, etc. We can make that harness plug and play...

You're asking where it goes to on the MA70 body?

A few things are the same but overall it's very different. I would recommend sending it over to us and we can make it plug and play for you, check us out at www.tweakdperformance.com -Doc

The n/a tach will not work with the 2JZ or 1JZ tach signal without modification. Most people use either a 7MGTE tach, a 1JZ (JZA70) tach, or a tach adapter like this one: http://www.phoenixtuning.com/zenstore/index.php?main_page=product_info&cPath=3_4&products_id=4 If you have a turbo tach and...

Thanks a lot man.