www.dodo-upgrades.nl

I think Bisi's header is a piece or art and looks way better then a standard 4-2-1 piece.(But that's just my opinion)
It's the 2000-2005 Toyota MR2 Spyder EHPS (Electric hydraulic power steering pump).
You can check K20.org or Honda Tech or search on google and you'll find a topic for this (DIY).It orginally came from guys with a EK chassis with K20 engine with no room for the original Ps. pump .And they installed an electric version .I don't have ac anymore and i didn't want to loose my ps so i went for this solution.

This is the stock exhaust and beside my 1st 50mm tube.

what a difference... i'll do mine soon. this is probably my next mod but an iron one... steel is too expensive. but 50/55mm definitly. Cheers

whats the standard diameter??? also whats the inlet/outlet from the cat diameter?

the stock numbers are 42mm from cat back and 50mm from the header to the cat. But beware, this isn't the worst. EK3 civics have 39mm stock exhaust hehehe

oh cheers, do you know of any decent places to get a catback system??

Any custom will do the work and cheap enough!!

Here, it should be something like 75eur from the manifold to the muffler.

The exhaust of D14A3 is same in diameter with the VTI one?
My exhaust is rusty with holes and i want to change it.
What other option is proper fro EJ9?

You could have a custom one! 50mm or 55mm would be good