North American Turbocoupe Organization

stock exhaust
Senior Member
does anyone know what size the stock exhaust size was and what did it reduce to at muffler..... want to put a cherrybomb turbo muffler on until i get my new 3" set up
86tc 5speed k&n, gfb boost controller, autometer gauges, tripminder, fmic, and upgrading as fast as possible

Pony Boy Offline
The stock pipes, per Pete D, are 2.5 in. at the downpipe, then 2 in after the catylitic converter, then after the mufflers it necks down to less than 2 in. So at the muffler you should have a 2 in. pipe.
1986 Turbo Coupe,K&N Cone Filter,Gillis Boost Valve,3-Speed Automatic,1987 Turbo Coupe Hood,Stock 1987 Intercooler,LA2, Big VAM.

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