no power after 5200 r.p.m.'s

[johnny b.]

under acceleration, slow or abrupt, the engine pulls smoothly and strongly. at 5200 r.p.m.'s, however, the otherwise pleasing exhaust note becomes a sound much like a machine gun and no further speed increase is experienced.

[xveganxcowboyx]

Poor fuel delivery? Timing off? I'm sure someone on here has a better idea, but those are my ideas for a place to start.

[kayotic]

what kind of porsche is it what model and so on.