I just bought one already ported. Normally you would send in yours or a spare and they would port and change the butterfly on the throttle body. Some companies do core exchange. Only companies I know of now are mil spec, boomba and jun that upgrade oem throttle bodies.
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ETS TS T3
FIC 1100
MX1 Cams
Freakmotorsports intake manifold
PPI 64mm throttle TB
UR exhaust
SC tp
AMS Tranny cooler
ETS 3.5" FMIC, IC pipes, 3.5 intake
Walbro 255 fp
Grimmspeed 3 port
Synapse Dv
SSP Tranny cooler
K27 built sst
415/338 on kozmics mustang dyno (93oct)
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