S54 Dyno Database

[fourmula1]

Impressive power - are those stock camshafts?

Yes, stock, nearly 100k miles on engine and only been open for rod bearings, vanos, and valve adjustments.

[GregS86]

NIce! Swaintech coated headers?

Yup.

[3staxontheradio]

EPIC Alpha N tune
SuperSprint Stepped headers
3.5" custom exhaust
4" custom intake with ITG filter
Tilton clutch/flywheel
Underdrive pullies


327WHP, 260WTRQ(#'s are SAE corrected), however this motor will end up detuned for classing purposes.

Whats the muffler setup and what diameter choke did you go with on the merge to 3.5"?

[x Spades x]

2006 M3 ZCP
Manual
95,800
Bone stock (for baseline pulls)
Dynapack (Hub dyno)
279HP
272TQ
(we took the 2nd highest as the highest looked wonky/glitchy)

[Dbutler]

Did you lift at 6500?

[Nardo S54]

My Z4 M coupe has been running Epic software from day 1 but I only recently managed to find time for a custom tune. I never did a stock baseline but I know a healthy Z4 M generally dynos around ~275whp (SAE) on a Dynojet. But for purposes of this exercise, I’ll use my header tune as my baseline, which means total pickup of +40whp from airbox, x-pipe, pulleys, and flywheel. Note dyno runs were performed at same facility with ambient temps being quite similar (spring 2024 vs fall 2025).

Lastly, I recognize a more controlled framework would've entailed starting with a baseline header + custom tune but frankly, I wasn't going to pay up for an academic exercise. Ultimately, this answered the most burning questions for me while still having good relative comparison points.


Header Tune (OTS)

• Euro headers
• 100 cell hfc
• Peak 298whp / 237lb-ft

Alpha N (OTS)

Same as above plus following additions:

• TMS CSL v2
• TMS pulley
• Supersprint X-pipe
• TTV Racing flywheel
• Peak 318whp / 241lb-ft

Alpha N (Custom)

• No change to above other than tuning
• Note there were quite few runs and iterations of the tune but this was the "final" version
• Peak 337whp / 256lb-ft