Osir Design - FCS GT1 - Carbon Fiber - VW GTI Mk5

Installed this GFB diverter valve to eliminate the OEM plastic one all together that are prone to failing. I also spent the little more instead of rebuilding the bottom of the OEM that GFB offers but doesn’t clear all cars. BOV option (any brand) can cause car to have lights & running rich issues if not tuned asap so this was the best option for me to pair with my neuspeed intake. Plug and play harness & works great ! Can tell has less slop from day to day traffic & daily driving.

This intake sounds amazing at low rpms ! Definitely using some more gas cause it’s hard to keep foot off the throttle lol. Was a tight fit on an 2014 Audi TT Quattro S Line. Engine cover does touch against the intake tubing but fits overall pretty well.

The side markers were very nice upgrade’s. I love them 😍

Some slight modifications to the car and the cold air heat shield was needed but otherwise it fit great. Can really hear her breath now!

Love my new side markers - very clean looking and unique in how they flash when turning left or right. The only suggestion I’d make is provide instructions for both installing them and for being very careful with the wire once you disconnect the old light housing Left side went in ok, but I lost the right side into the fender black hole which required me to remove the tire and unscrew most of the lining so I could find the wire!

Ordered a throttle body spacer nearly a year ago from CTS Turbo. TT Stuff reached out once this replacement became available, and I had it in a couple of weeks. Highly recommend working with these guys. Email replies were never more than a day away.

Great quality as always. (This is my second one) TT Stuff went out a limb to get this shipped to me. Great customer service. Shipping was a bit lacking but that wasn’t their fault (over a month from start to finish)

Great product

Great product

Works as advertised, a Lil tight getting it in but a great fit.

I absolutely love the way this updates the rear-end of my 2001 mk1 TT! This product is definitely a high quality. The fitment was great. Super easy to install. Overall I'm very happy with my purchase and the new look of my mk1 TT!

Fits like a glove and the quality is top notch. This will look great with all the other carbon bits on the car. To be honest the fit is so good, you can probably get away with using a industrial adhesion backed Velcro. IMO.

Beyond expectations!

Perfect addition to a beautiful car

It's really cool, great turbo sounds, great price, only gripe is instructions could be more detailed with a video