Dyno comparison

[shattered_z]

Jusr finished a dyno day at a local garage, and I feel disappointed.

412hp/457tq on DynoJet

Feel like it should have more.


95k miles 2008 N54

JB4/MHD custom tune
93 octane pump gas
Dual Air Intake
High Pressure Side Oil Catch Can
Aluminum charge pipe
Tial BOV
VRSF 7.5" IC
VRSF Catless Downpipes
VRSF Street Exhaust
2x 25 row oil coolers
B58 Coil Pack conversion
220°F Oil Thermostat
Rb2+ Hybrid Turbo Kit (upgraded inlets and PCV)
Fuel-It Stage 2.5 low pressure fuel pump
SPEC Stage 3 clutch
SPEC 14lb flywheel
IRP v2 Short Shifter

Datazap: https://datazap.me/u/n54blacke90/log-1716069953?log=0&data=1-4

 

[carabuser]

What do the logs look like?

 

[shattered_z]

What do the logs look like?

Updated OP

 

[carabuser]

Hard to read jb4 graphs but it just looks like you have low boost and timing. Power is about right considering.

 

[ktb_e92]

Don't be disappointed, those numbers seem pretty realistic given the mods, fuel, and psi. There are significant amounts of people out there with, say a big single turbo setup, on a ~19psi 93oct tune that are barely tapping as much as 500whp, considering the top-end power is usually a bit better on those compared to upgraded twins. Who is you tuner? Your datalog looks pretty good, though the shop could've used some better fans because your IAT's seemed a tad high compared to when I dyno'd mine on a fairly warm morning and I have the same intercooler as you. I didn't see anything mentioned about upgraded turbo outlets though, did you re-use the stock ones? Also, an RB2+ is a 17t-sized turbo, so you'd need something like a Game Finisher/19t-size if you're wanting to move even more air through the compressors to generate higher power on a non-port injection tune like a 19psi/93oct one. Regardless you do have a good turbo setup, all of RB's products seem great. Remember, you can still run a ~22psi E40 map which will give you anywhere between 500-550whp, and still be safe on the HPFP without port injection!

 

[Yourbuddysatan]

Stock turbos?