Ok so I have a 1991 with a Greddy Turbo and the following mods: Custom Inetrcooler, Bailey VTA BOV, Emanage Ultimate, 330 CC injectors (have set of new 550 CC injectors but are not installed), Greddy Profec B boost controller, Jim B's Dual feed fuel rail, Innovate LC-1 wideband O2 sensor, Custom catback exhaust and test pipe, Torsen limited slip diff from a 1.8 M edition. My car has lots of miles (185,000) and I am tried of fixing things so I want a newer Miata with less miles that I can keep for a few years.

I found a good deal on a 1995 M edition Miata with 87,000 miles on it. If I buy the 1995 I am trying to figure out the cheapest way to put a turbo on it and use as many parts from my 1991 as possible. Are the exhaust systems basically the same on a 1995 and a 1991 (I know they have two O2 sensors)? I am assuming I should buy a diffferent turbo and that I will need a new downpipe and manifold but which turbo , manifold, and downpipe? I am kind of broke right now (especially if I buy this car) so the cheaper the better. Thanks for the help.

 

EMU with re-wiring will go in NP.
'95's only have on O2 -- ODB-I
LC-1 will move NP

The cat flange is different angles from what I know about the 1.6 and 1.8 exhausts -- but you should be able to get a DP to fit your current setup, if you take the whole thing. Might be a few different hanger locations or something small like that.

1.8 M's will have the torsen already installed.

Fuel rail is out -- 1.8's have different rail.

You'll need a manifold to fit the 1.8, and if you are lucky -- keep the turbo and the DP in the same position.

Dave,