[Tiago@VRSF]

Mustang dynos are called hear breakers for a reason

You really want to focus on the before/after numbers. The delta will show the gain, you really need a baseline to gauge improvement.

[LMB335IS]

On the plus side, your car looks good!

[evo335xi]

I'd use a dyno jet or look up similar modded cars and gauge there. I hate corrections because they can always be skewed though.

[f30luxline]

Originally Posted by wgknestrick

I don't see an issue with that dyno. My STI with FP3065 (GT30R size) turbo put down 398whp on a mustang @ 22psi on 93oct. It was dynoed in York, PA (2005 ish) so it was probably the exact same dyno.

N55 turbo is much smaller. 4th gear would've shown more HP (maybe 10-15) and a little less torque IMO. If you want more HP, you need a turbo upgrade.

Originally Posted by chris82

They're correct that the gear doesn't matter afaik. I was at a dyno with a stock N55 135i and it put down 245whp on a mustang, and that was on a fall day, around 50 degrees

To get to dynojet, increase your numbers by 10%, mustangs read about that lower than dynojets.

Boost will increase based on the load on the motor. You create the load on the motor by selecting the gear. On a dyno the higher the gear the more load you can create which again increases the boost. More boost yields more power. RPM is a major factor on the street but since you always do pulls from about 1.5~2k RPM you only have your gearing that can be changed to increase/decrease the load. I have attached a snapshot that illustrates 4 runs, 2 were 3rd gear and 2 were 4th. You will notice that HP didn't increase much but the torque shot through the roof.

[wgknestrick]

Originally Posted by f30luxline

Boost will increase based on the load on the motor. You create the load on the motor by selecting the gear. On a dyno the higher the gear the more load you can create which again increases the boost. More boost yields more power. RPM is a major factor on the street but since you always do pulls from about 1.5~2k RPM you only have your gearing that can be changed to increase/decrease the load. I have attached a snapshot that illustrates 4 runs, 2 were 3rd gear and 2 were 4th. You will notice that HP didn't increase much but the torque shot through the roof.

Torque and HP are related linearly..if you increase one, the other follows. That just means your specific turbo ran out of flow in the higher RPMs when it was making more HP in the higher gear. My STI did not have such limitations with a 35Rcompressor/30Rturbine. We both experienced the same issue.

[mike5809]

All N55 turbos run out of steam up top and fairly quickly. After 5k things go downhill quick.

Anyway, I know the numbers are really low. The car feels great and pulls like a mother. I even experienced a few flare shifts, not sure if it was a random occurrence or it will keep happening - which leads me to believe I have well over 430tq. After talking to a few people I would assume that my numbers would be around 350/475 (about ~10% higher) on a Dynojet. The car certainly feels that way - it pulls real good at the moment. Just am worried about the transmission/clutch/etc now.

[Unklejoe]

My 2002 Maxima would disengage the AC compressor clutch during wide open throttle. I'd assume a 2011 BMW would do something similar. I'm curious to know for sure though.

[yas_e92]

2011 335xi n55 Pure stage 2 + inlet + dv upgrade.
ER fmic
ER dp
fuel it port injection
Vrsf Catless dp
PR ignition kit
Stage 2 walbro 525 lpfp

Made 390awhp on mustang dyno 93.