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If you are considering having your wheels widened (or narrowed), this is information you need to hear before proceeding. I needed two wheels narrowed and had read many positive comments here about this company, so I removed my wheels and shipped them. The first thing I was told was that one...

The firewire instructions say orange for the input and blue for the ground. Voltage = 0. Then SCT says to connect the system ground wire (black). Voltage still = 0. I look at my x4 users manual pdf file and it says this in quotes and caps: "YOU WILL ONLY BE USING THE RED AND BLACK WIRES -...

I need a little assistance with a small matter from anyone in the Corpus Christi area. Please message me. Thanks.

Are these a press fit? Can they be removed and shortened easily without taking the intake off? Or even better would be to thread the openings...

Ever an option? I know 2007 - 2008 they were not, optional on all Mustangs except. How about 2009 - 2014? I'll be adding factory heat as my body, especially my back, is giving out and I love having them in my semi-daily driver ute. I went out datalogging yesterday evening and all I could...

I read somewhere a long time ago that on a stock motor, having adaptive on is a good thing, primarily due to parts slowly degrading and the PCM's ability to compensate with factory settings. But on a modded motor, is this such a good thing? Why do we need the PCM using long term fuel trims to...

Any performance difference(s) in these two wideband O2 sensors? I have harnesses for both that work with my controller. Just wondering which I should choose....

For the coolant system use this stuff: https://www.kseal.com/products/k-seal BUT DO NOT USE IT IN THE INTERCOOLER SYSTEM!!!!! It works so well that it seals way before reaching operating temps. I did and thought to pass this info before you have to pull the block out of the lower intake. I...

I bought my 2008 new in Nov 2007 in Fresno, Ca. In 2010, my daughter wanted me to teach her how to drive and she wanted to learn a stick. I asked her if she was okay if I taught her in the Shelby, that she would be one of very few people that can say she learned to drive in a GT500. So be it...

If you replace one or all the TPMS sensors, is retraining necessary?

What do you think is the value for a set of four with centercaps, in excellent condition? I know of a set that's up for sale but don't know what they're worth. Thanks.

Is our differential identical to a comparable year Mustang GT? I'm thinking of replacing the current 3.73's with the stock 3.31 gears (which I do not have) and if the GT has the same differential, it would be feasible to pick one up from a parts car and swap the whole thing instead of buying...

In the engine compartment, there's a capped A/C line (high side) near the fuse box. It's a black plastic cap on an aluminum tube. I need a cap as mine apparently fell off. I looked it up and it says it has an M10 thread. But when I look at the tube, there are no threads, so I'm confused...

Can this monitoring system's parameters be modified? In other words, can it be configured to trigger at user commanded pressures for each tire? Or even disabled completely???

What is the preferred method for getting all the gas out of the tank without running the engine? I just discovered tonight that the 100 octane I've been getting is leaded...!

I'm going to use representative numbers here to ask my question. I have stoich in my tune set at 14.64 and my fuel table commanded lambda at load / rpm at 0.8 (or 11.7 AFR). I change my stoich to 14.08 (for 10 percent ethanol). So to maintain an 11.7 AFR, I would need to change the fuel table...

I gotta get me one... Go to O'Reilly Auto Parts >> https://www.oreillyauto.com/ Enter "121G" in their Search box. Tell me what pops up...

What should the spark source be at idle on a fully warmed up engine? Is it BKT or Idle Feedback? Also wondering what triggers idle control? All I can find in the tune is "Lowest Spark Value for Idle Control"..... Thanks all.

Have you ever depressed your clutch pedal, only to hear a "pop", the pedal goes straight to the floor, then see a funny black round part at your feet that looks like this? Well, this happened to my daughter a few weeks ago. I had no idea what this part is but she found the answer. It's the...

I have not seen a complete list of pros and cons, so put one together myself. I attempted to list these in the order of importance to gearheads, most important to least. If you know of any more, please list them. Thanks. e85 and Methanol Will Both: 1) Work in the combustion chamber the...

It has taken years to get to this point. The tune file for my final test is written. It will be loaded and tested the very next time I go out for testing and will answer my own question whether my idea will actually work or not, an idea I came up with while I slept back in 2018. Took me back...

A/C pressure cycling switch located? The diagram I have (posted) shows it next to the wiper motor and appears to have its wiring branch from the wiper motor wiring. It isn't there. I think then that it's located much lower, just the diagram can't show 3-D. And I assume it's attached to an...

I think this will be interesting.... if it takes off....^^^ If you have a unique mod or mods, let's hear about it. Nothing that can be bought and bolted on... we can all do that. I don't mean a shortie antenna that's no longer made! I mean something creative, unique, maybe something you...

I was around here when this car was new and even years before that. In fact, I bought my 2008 new. I don't recall anything about any "prototype", Super Snake or otherwise. Have you? Here's the ad >> 2008 Ford Mustang GT500 Shelby Super Snake Prototype

This forum is probably not the best place to ask for help, but I'm running out of options.... My daughter moved to Tacoma from Tucson with her husband and step-son three weeks ago. She owns a 2006 Mustang. They were unable to take the Mustang, so I offered to keep it until one of them could...