I ordered an stm aluminum pipe today. It was only 160 And i like that its aluminum and weighs 15 lbs less than the stock cat. I will let you know how it fits when i get my pump and injectors and install the pipe for the tune

 

I can vouch for Top Speed and their products. I had a full Pro-1 exhaust on my 350Z for over 3 years without one single issue, and it was the best sounding exhaust Ive ever owned for any car.

 

I have bought 3 test pipes
2 straight one resonated.

I just say they work awesome. No leaks and at less than 50 bucks a piece why not!

 

I had an ebay test pipe on my Eagle Talon TSI and my Eclipse with no issues what so ever. And why do people worry about the looks....I mean people arn't going to look under your car everyday. Looks would be important for something in the engine bay but not for something under the car that will get dirt and mud over the course of the car's lifetime.

 

I got the tsudo brand one for $100 shipped, actually its a resonated pipe. works great.

 

all the same-for the most part, as long as your flanges fit up. I'm in a situation where I have a one piece Greddy downpipe/midpipe that is 80mm (larger than 3"), and an HKS midpipe/mufller that is 65mm and designed to mate with a 76mm, not 80mm. So I have to sell the Greddy and pick up something with the 76mm.

 

I've had multiple ebay test pipes with no problems.

 

Topspeed quality is okay from my past experiences. I did have any fitment issues with them on my g35.

Just make sure you don't purchase one from some random seller that has no brand to it. The lowest I would go is Topspeed anything else is just going to be crap.

I bought an HKS Replica Exhaust for my G35 coupe. Looked nice including the welding, but they welded the flanges unevenly so fitment was way off.

 

Bought a Blitz test pipe from Japan, have it in America for $102.
Way better than an ebay test pipe for same price.