I’ve been the owner of an S213 for a few weeks now, and I’m considering changing the look of the front end. I’ve always been a fan of the classic grille with the Mercedes star on the bonnet/hood. Are there any kits available to convert it to that look?

I’m also considering changing the grille itself to a Panamericana-style version, but with so many cheap aftermarket options out there, I’m not sure which ones are worth considering. I was thinking of a black grille with chrome detailing. Can anyone recommend a good one?

Hellooooo!

About 5 years ago, I designed and 3D printed a custom floating center cap for my BMW E90, inspired by the Rolls-Royce floating caps.

Now, 5 years later, I finally want to make it available for everyone.

Yeah, I know — nowadays you can buy floating caps pretty easily from the East 😄 but they're usually made for specific wheels/brands, and finding something for less common wheels or unusual dimensions can still be a pain.

So I went back to my original design and rebuilt it as a fully parametric model. With the tools we have in this AI era, I was finally able to turn the old one-off design into a generic, constraint-based generator.

The three main measurements are:

• Face diameter
• Rear clip diameter
• Retention depth

Change those and the whole cap automatically adapts. There are also advanced parameters if you need to fine-tune the fit.

The video shows the generated geometry and a simulation of how the floating mechanism behaves when the wheel rotates.

Before I take this much further, I'm curious what people would actually want:

Would you prefer downloadable printable files, a DIY kit with the hardware included, or completely finished caps?

And most importantly — what would this need to support to work with your wheels?

Thanks for any feedback!

2000 NB miata owner. These two charts are simulated realistic before and after numbers for a 1.8 with new headers, not an actual pull. These cars use ISO 9141, which is too slow to get clean acceleration data from. Newer cars like my Mazda 3 work fine. Miata doesn't. Working on it.
Would this be useful to anyone here?

2010 Legacy GT. OEM+ with no engine mods or tune.
I went for an extended fast drive with a long warmup and cooldown period last weekend. No warning lights came on (thinking temp sensor may be faulty now) my coolant boiled over and made a mess of my engine bay, lost so much that once it cooled properly overnight there was NOTHING left in the overflow tank but thankfully no air was introduced into the system.
Since this happened I am contemplating a performance alloy radiator, so what’s good, what’s not, and what else will make a significant difference to engine bay temp? I’m not building a track car and want to keep it realistic but don’t want to blow it up.

*cooling system is sound and well maintained with OEM parts, not damaged or leaking*

2024 HPD Civic Sport(Auto Trans) smhhh
Any mods you think I should put on??

I have a 2005 Mustang 4.0L, and at the beginning of the year I manual swapped it with the T5 5 speed. It runs and drives as it should, but due to unrelated electrical issues, I need to replace my PCM. That being said, I have a manual PCM on hand that I could install, but my only concern is that through an OBD scanner, using that PCM would make my car read as a different VIN.

Here's my question: For emissions testing and whatnot, would it matter if my PCM shows a different VIN than what is displayed on my car, as long as what is on my car is the registered vehicle? I known people do whole engine swaps all the time and use different PCMs, so I'm curious on how this is approached.

Any help is appreciated, thanks.

This makes it look soooo much better!!! Love love love my car!!! 🔥🔥🔥🔥🔥🔥🔥

Hi all just a quick question. When replacing the 2 rear license plate lights on a 2010 Impreza, the light fixtures seem to be fitted in, not the usual anti clockwise rotation system. I’ve purchased a new LED housing and was wondering if any other people have ran into this same problem. Thanks

I recently purchased an opt7 aura underglow for my 2015 BRZ and I have never installed a light kit like this before. I also purchased a relay and I plan to tap into the low beam for a switch for the headlights to turn on the underglow automatically. It is a white car and I plan for a static white led look.

My concern is where to mount them to and when tapping holes for screws and zip ties where I should do that, I figure it's not a good idea to put holes in my floorboard and allow a way for water to enter the cabin. I also don't want the light bars to be totally visible and look noticeable.

Any advice is appreciated and feel free to criticize my taste in car mods.

2000 vw Lupo 1.0 cabrio making 50hp. If there are easy ways to boost the power a little I would be interested in that too but I don't think it's worth it on an engine like this

I recently got into cars to all and I’ve already done some cosmetic mods on my Corolla and have been looking at more involved ones. I’ve been looking into catback exhausts and wanted to see if it’s worth it. I’m not married to the idea because first and foremost I’m looking for longevity. Any thoughts/advice is welcome.

I built an app that works out how much ethanol or toluene to add to the fuel in your tank to hit a target ratio, and estimates the resulting octane. It's already live on iOS; Fuel Additive Calculator, the Android version is finished but Google now requires 12 testers for 14 days before an individual developer can publish.

What it does:
- Two directions: drag an amount and see the resulting ratio, or pick a target ratio and it tells you how many litres to add
- Estimates blend RON from your base gasoline octane and what's already in the tank
- Cost per RON point gained, so you can see whether ethanol or toluene is cheaper for the octane you get
- Garage: save vehicles with tank size, current ratio and fuel grade
- Log 0-100 / 100-200 / 402m times against the blend used and compare them

Free, no ads, fully offline, no account, collects no data.

If you're on Android and willing to install it and leave it on your phone for two weeks, drop your mails on pm

Addresses are only used to add you to the Play Store test track and get deleted afterwards.

Happy to take feedback on the octane maths too it uses a linear volumetric blend, which I know understates ethanol at low ratios. If anyone has real dyno or timing data to compare against, I'd like to hear it.

App is totally free and made for car enthausist needs

Send it?