Recent content by fusionrace

So I passed with a ton of room to spare. So I think honestly the most progress was made with cleaning the ports of carbon and soot. I imagine I could clean even more if I wanted to. Given the car was not driven much over the last 30+ years, it makes sense as to why this could happen. Thanks...

Yea I used a wire brush and got a bunch of gunk out. I also sprayed the intake manifold with seafoam, which has worked well for in the past with an old EG civic. To be honest, at first when trying to clean the intake manifold side of carbon build up, it was hard to move the wire brush...

Thought I had sent the message above a week ago, sorry about that. I installed a new EGR today, the old one was likely working fine though. I installed a new fuel filter as well. I am planning on taking it to get smogged in the morning, so we’ll see what happens. I’ve also disabled the TCS.

Stock wheels and tires. The extent of my mods is tiny Haha. So I had a really hard time with the removing the EGR, rounded a bolt, and any attempt to remove the nut failed. This is after soaking it in penetrating oil overnight. Tried heat, reverse sockets, and a bit splitter. Gave up. So I...

Thanks for the reply. So yea it passed the 25 mph and failed the 15. I passed on my CO and HC number so the cats seem to be operating as expected. I am actually in the garage now trying to pull the EGR, the bolts have been stubborn, but I’ll report back. Also no check engine light and no...

Thanks for the background. Currently failing NO @ 15mph, Max is 549, I was at 668 The car has 61k on the clock, no modifications

- New owner - 1991 NSX - Failed emissions a few times over the last few weeks, trying to chase down why. - No check engine, no stored codes So I have been trying to track down why I am failing emissions and I went to take a look in the engine bay found the engine side harness leading to the...

Email Sent.

Damn that's clean!