I had my 2002 / Alpha N mapped yesterday at the same rolling road as Toby. Before and after graphs attached (before was carried out on the same rollers last September)
Alpha N Results (flywheel): 246 BHP at 7290 and 192 lb/ft at 6000
Engine is standard Sport Evo - 7800 rev limit, custom manifold and single 3" exhaust. Standard plenum but with 4" inlet and ITG Filter.
My torque and power curves have a couple of 'holes' at 3000 and 4000 RPM - probably due to the manifold arrangement necessary to fit an S14 into the 2002.
Mapping took about 3hrs - the final power runs were done after 3hrs running so heat could be a bit of an issue - used a full tank of optimax and covered about 90 miles on the rollers !
Note that the table of figures only gives readings at 500 rpm intervals - i got the screen capture for maximum power reading but cannot link to it - as i said, it was 246 at 7290.
The car drives much better with the Alpha N - better than the figures would have you believe.
Before
After
Edited by 2002SportEvo