Whats the single best upgrad for a GT3
upgrade it to a gt2
i did the ECU and it made a noticable diff. on my gt3. According to Rockitman the straight pipes performed very well as does the Europipe. Pretty sure he did some dyno tests.
i did the ECU and it made a noticable diff. on my gt3. According to Rockitman the straight pipes performed very well as does the Europipe. Pretty sure he did some dyno tests.





