Normally I'd just build a Lowe's or Home Depot boost leak tester but with an 84mm inlet, finding a coupler that fits was a bit more difficult than I thought it would be. So, I bought a boost leak tester from turboboostleaktesters.com and had it fitted with a pressure gauge, 3.25" coupler, t-bolt clamps and, at least for me most importantly, an NPT nipple instead of a shrader valve. Total cost was around $40 before shipping.

It got here in about 3 days and wow, I love this thing. I've done boost leak tests more often than I can even remember but this thing makes the process so easy. I use the regulator on my compressor to control pressure and between that gauge and the gauge on the tester, I can verify boost leakage. With the NPT input, just hook your compressor outlet directly to the tester and voila, you are free to move about the engine bay to hunt down boost leaks.

The end result is I found several leaks from the prior owner at joints I've never messed with, specifically in the UICP. I also found my TB is leaking, shocking I know. Just fixing the UICP leaks, I "reclaimed" about 750 RPM of lag. I was building full boost at 4250 on my HTA71, now it's spooled by 3500. I have new TB seals on the way and I couldn't be happier. Totally changes the way the car drives.

I know they aren't cheap, but they got it out quick and it's a solid product. Hopefully this helps someone!

Todd

 

very nice! post a link and or picture of what you used. I'm about to boost leak test my evo in the next couple weeks and will make my own tester but now I'm curious :-)

*EDIT Reread your post lol. looks good on their site!

 

^bump^ what he said. Sounds like a solid product. Thanks for the post.

 

Hope these work!

 

Sweet much cheaper than a lot of other places I've seen. I'll need to get one of these, my boost leak tester is leaking! Lol

 

that's no good. Mine usually turns into a rocket.

This does look good.

 

I normally just build my own but the really appealing thing with this is it fits the 84mm cover perfectly (you can pick whatever inlet size you want, HTA Green is an option and is the same cover I have). I fully realize this can be built for less money but the convenience and reasonable price are what sold me on it. And the compressor nipple is the best idea ever, IMO.

 

Thanks for posting this! Looks a lot nicer then the home depot one I made.