Star Products STATU24APB Three Way Exhaust Back Pressure Kit, One Size

I expected a better compound gauge with this set since it was from Lang who also makes this kit for the tool trucks. The cheap guage was not set to zero and did not have an easy means to center the needle like most guages. I decided to perform this adjustment by first removing the attached hose. I then removed the clear plastic bezel by tapping it on the edgle with a plastic pry bar. Next, I removed the two philips screws from the rear of the guage and removed the innards. Adjustment was then made using a small needle nose pliers and gently bending the needle spring in the direction to center the needle on the guage display. Everything was then reinstalled and the guage is now perfect.Overall, this is a decent set due to the fittings and adapters included in the kit

But I prefer the attachments in this kit.The gauge started off showing a vacuum was present. If its a precise reading you want, get another gauge. The seller did get me another gauge, but it was off also.The kit contains rubber plugs that would fit in a few different size hole (where a check valve for an AIR system might be) An O2 sensor plate for the type with two nuts or bolts, and also threads into an O2 sensor bung.It also has some nutserts and screws with brass washers.Don't drill a huge hole for the nutserts. Drill a small hole (13/64 I think) and tap the hole with a 1/4-20 tap. The fitting on the gauge threads into the nutserts which is a 1/4 -20 thread. So eliminate the huge hole and the possibility that the hole for the nutsert will end up too big for the small lip on it. Then just use the provided screw and washer to seal the hole. And it may be much easier to find 1/4 -20 screws and aluminum, brass or copper washers without having to add nutserts to the list.

Only used once but seemed to work fine showing only a few pounds of BP and upon increasing rpm a few more. If you drill a hole like I did as access to my O2 sensor is a PITA without a lift, be careful to avoid hitting the overlap point of the exhaust pipe where a joint is which is a bit tricky to figure out as it's inside the pipe. My hole sat right on the middle of that interior overlap (which of course I couldn't see when drilling) so that the insert supplied didn't quite work and I had to tap the hole to accommodate the threads on the hose. My fault there so no complaints about the product after first use.

Just received this. I was surprised at the quality. I haven't had a chance to use it yet,but I'm sure it will work well. I appreciate the protection cover on the guage.

I only got the gauge. All other pieces were missing

Great item at the great price what else can you ask for

Mine was damaged and the seller jb tools drags there feet..it cost me 86 dollars waste of money and there customer service sucks

Bought this on a whim two years ago. I'm a mechanic, yet still have not had a chance to need to use this silly thing. It's a glorified pressure gauge, not worth $75