Civic EG

I bought an eg a couple of months ago it's runs good, the
only problem is that idk what kind of tranny I have. When I bought
The car the guy told me it was an SI tranny. My question is,
what year? Is there any way that I can figure it out? I have a b18b1
sitting in my garage and was told that an SI tranny would work fine with
it that's why I wanna know.

Depends on which si.

if you have a D Series in your engine bay right now, then its a EX/Si Transmission, That will only fit on D Series.

If you have a B Series in your engien bay, Then its off a 99-00 Si Transmision. They are more commonly refered to as b16 Transmissions though.

You can not mix B and D Series transmissions. We have mulitiple guides on the site about swapping a B into a D Series Civic.

Yeah right now I have a jdm d15b

Then its a D Series EX/SI Tranny, they come in 92-00 Coupe EX's, 92-00 Sedan EX's, 92-95 Hatch Si's and 93-97 Delsol Si's.

You will need a Transmission off one of the following:
93-97 Delsol VTEC(not si, but VTEC)
94-01 Acura Integra(all trims)
99-00 Civic Si/SiR (EM1, The B16 Powered one)

The rest of the swap has been detailed before in detail on the site, Use search or the DIY index to find them.

Alright cool thanks you've been very helpful