Quote Originally Posted by TurboSinceBirth View Post
If you guys want a bigger throttle body to run with your upgraded manifolds check out an aftermarket 2G one. I knew they were bolt-on for the longest time but never picked one up. The 2nd gen DSMs share all of the same sensors so it's a direct swap. I bought a 70mm ID S90 throttle body which will be fine for the majority of aftermarket FMICs. They use a 2.75" intercooler pipe. When I upgrade to a bigger intake manifold I'll get a 75mm ID throttle body for 3" intercooler piping. No sense in going bigger than the pipes.



Fits the stock intake manifold and the throttle plate even clears the small stock opening.




VD numbers can be compared against stock, S90 bolted on, S90 with the inlet lip ported, and maybe with it extrude honed. What I like about it is the provisions for the stock TPS, IAC, and even a BISS screw. It should give a stock like idle and throttle response. The only thing missing is a dashpot but the throttle plate may not slam shut too hard. If you guys want to use a DSM throttle body with an aftermarket intake manifold you'll need a flange to weld on. The Evo 8/9 is a 71mm ID which would work well for 2.75" intercooler piping. It would have to be ported out for a bigger throttle body. Xcessive offers the Evo flange.

Online Store - Xcessive Manufacturing
Perhaps I am a bit daft, or on too much sinus medicine, but what separates the 1g from 2g throttle bodies in the aftermarket, and by that extension, the DSM throttle bodys from later model Evo throttle bodies?

I know the 1g DSMs have different sensors than we do, but would an aftermarket throttle body specify between the two (or I guess 3 including the Evo)?