May calcs show - at 6,000rpm sea level, 70F and 60% RH
Target AFR = 12.0
Injector values shown at 100% duty cycle.
Steve once reported our stock injectors are 450cc - I'm not sure if this is at 100 or 80% duty - I suspect 100.

SC Pulley........ Final MAP......... Fuel input per injector cc........ lb/hr/injector....... Snorkel Inlet Volume cfm
74.................. 13.7..................... 434................................... 41.4..................... 591
61.9................ 21.2..................... 550................................... 52.4..................... 748
65.................. 19.0..................... 516.................................... 49.1..................... 702
with a 178 crank pulley
Assumes no drop in SC performance - but there reportedly is.
65.................. 25.6..................... 616.................................... 58.7..................... 838

I think GG and Steve managed 22psi MAP with a similar stacked setup. GG noted lean issues and I'm pretty sure he simply solved it with the Fuel pump swap below.


Our Stock Fuel pump is the Pierburg - 7.XXXXX.XX.X ie: PENDING (will post when I find out)

The previously recommended Pierburg upgrade is the 7.00228.51.0
This pump is used on the
SL65 AMG 450kW M275.981
SL600 .....290kW M120.983 ........mfy 09.1995>08.2001
SL55 AMG 380kW M113.992 & 995 mfy 10.2001>>
S55 .AMG 265-368kW................mfy 08.2000>>
C55 .AMG 270kW 113.988..........mfy 02.2004>>
CL55 AMG 265kW 113.986..........mfy 09.1999>08.2002
CL55 AMG 368kW 113.991..........mfy 09.2002>>
E55 .AMG...................................mfy 10.2001>>

This data is avaialble via a 7.5MB download from http://www.armtek.ru/downloads/pg_.pdf
but you have to sift through the models - hence why I amalgamated above for convenience.

searching the forum many more walbro finding than pierburg's