Don't know wether anyone's aware of this but there's a fault in the rear arch of a lot of integra r dc2s.if you look at the front of your rear wheel arch at the bottom there's a seam,on a lot of dc2s This seam has seperated letting water into the rear quarters which you won't realise from looking at the exterior.if your seam has seperated then remove your rear seats and plastic side trim like I did.I found the entire lower rear quarters were totally rusted.my car was rotting from the inside out and I didn't even know.
Here's a pic of the seam I'm talking about you can see the gap
you can see this seam without removing skirts.
This is from the inside....
I wirebrushed mine today,treated the rust and waxoyled it all inside.I also fiberglassed the gaps in the seams and the drainage holes halfway up each arch,leaving just the drainage holes along the bottom,but now no water can get in from the wheel area.
If you have a dc2 I'd advise you to check this because mines mint from the outside I didn't even know
dan