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    • Preliminary Burger Tuning (BMS) JB4 results with Alfa Romeo Giulia Quadrifoglio F154 V6 - 501 rwhp

      As reported last month Burger Tuning began tuning development on the Alfa Romeo Giulia Quadrifoglio 2.9 liter F154 V6. Development continues but BMS did share some preliminary results and they managed to top 500 horsepower to the wheels.


      The baseline on the Giulia Quadrifoglio is quite stout with 456 horsepower to the rear wheels:


      Very strong and yes there is some ethanol splashed in but it's underrated in stock form regardless.

      On Map 2 and an E30 blend they managed to pick up 45 horsepower and 58 lb-ft of torque at the wheels.

      More to come:

      Quote Originally Posted by BMS
      Was able to hit the dyno for a little baseline testing. Car is all stock with around 1000 miles on it, running on 91 octane with a few gallons of E85 added in for good measure.

      Did all runs in 5th gear and wasn't able to find a good way to avoid the downshift without just flooring it slowly preventing valid readings below around 3500rpm. Kickdown hasn't been an issue on the road so maybe just a dyno headache. Despite that got some great baseline runs and was able to play around a little with the early JB4 tuning.

      Also not 100% if the boost calibration in the JB4 logging software is accurate yet. Working on confirming that. It's in the ballpark though.

      Best stock run was 456whp and 448wtq at around 22psi peak and the best tuned run was 501whp and 506wtq at around 25psi peak. In areas of the curve gains were 60whp+ so overall quite a big power jump for the modest boost increase. Which is good news for tuning!

      Next step will be to take over wastegate control with the JB4 so we can push boost a little higher and see what this 2.9L can really do.

      This article was originally published in forum thread: Preliminary Burger Tuning (BMS) JB4 results with Alfa Romeo Giulia Quadrifoglio F154 V6 - 501 rwhp started by Sticky View original post