Dyno Time: SteamSpeed BMW N55 Stage 2.5 Turbo

We finally got some dyno time for the 335i at CarbConn in Kirkland WA.  The tune still isn’t done, but, it is the current state of where we are at.  There is still a problem with the knock pulling timing, so the timing and boost are set low for now.

BMW N55 STX 78R vs Stage 1
BMW N55 STX 78R vs Stage 1

Stage 2.5 Setup:
– FBO 2011 BMW 335i manual
SteamSpeed STX 78R BB Turbo
– Single port meth
– Only 21 psi, 9 degrees of timing

Result:
– 456 whp, 518 ft*lbs torque

Here is stage 2.5 vs SteamSpeed STX 67 (aka stage 1)

VS Stage 1 Setup:
Stage 1 SteamSpeed STX 67 Turbo
–  Single port meth
– 21 psi, 14 degrees of timing

VS FBO:

Stage 2.5 vs Stage 1 vs FBO:

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