Ad: SteamSpeed STX 78R BB N55 Turbo (aka stage 2.5) - specs & details

[sam@steamspeed]

Here is the new data in a chart:
2011 335i M-Sport Manual
3rd gear pulls
92 octane with single port meth

The red lines are where we left off last time. Looks like it is hitting peak torque around 4k fairly consistently. It looks like we were able to pick up another 50 ft*lbs and 50 whp comparatively. Version 9 has new colder plugs, so the tune is backed off.

 

[9krpmrx8]

Nice.

 

[sam@steamspeed]

We finally got some dyno time for the N55 STX 78R (aka stage 2.5) on the 335i at CarbConn in Kirkland WA! This car has baselines going from FBO -> SteamSpeed Stage 1 -> SteamSpeed Stage 2.5

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.

TL,DR: 456 WHP, and 518 ft*lbs with just 21 psi & 9 degrees of timing!

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):
– 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:

Stage 1 vs 2.5 turbos: