542rwhp with mods?

[ULOOKD]

Hey all
Just got car back from tuner, was able to pull 542rwhp with the following mods:
Vrsf catless downpipes
Bms air intake
Jb4

Do the numbers sound right?

Thanks

Jay

[Mr_M5Guy]

What were the before numbers?

[ULOOKD]

It was in standard form before. The tuning company installed all the mods then dyno.

[Mr. M6]

what i know is catless dp and jb4 map 1 will go to 600+ whp

[TrevorM3]

with just a jb4 the car should make over 6xx to the wheels. Something is wrong.

[schnell1982]

Originally Posted by ULOOKD

Hey all
Just got car back from tuner, was able to pull 542rwhp with the following mods:
Vrsf catless downpipes
Bms air intake
Jb4

Do the numbers sound right?

Thanks

Jay

There are different brand dynos.
Some dyno machines can be a 20% difference for example.
So without a before dyno test on your car, you will never know what your gains were.

Your car may be making the correct power.
But, just looking for a dyno number is not the correct way to assume your tune is correct; you need to log the engine and see how well it is running.
Example : ignition timing, knock, fuel trims, boost, etc...
This is what matters when tuning a car, not just the overall number a dyno shows.

But for your post question. I have seen a F10 M5 with catless exhaust w/ complete system, cold air intakes, stage 3 turbos, custom tune etc make 580WHP on a low reading dyno on California 91 pump fuel.

Being that you have the JB4, you can record some logs and send in to Terry at Burger Motorsport and he can give you input on your JB4 settings.


This is a good thread about dyno's from VF Engineering


http://f80.bimmerpost.com/forums/sho....php?t=1336949

[Msizzle]

sounds way low to me