Performance Mods

05 Harley-Davidson FLSTSCI Softail Springer Classic discussion forum:


Performance Mods

Performance Mods 
Retro H-D said 2005-10-13 08:50 
 
My EFI 2005 Softail Springer Classic, delivered in May, has the following performance mods:

95 CI Big bore cylinders (stock is 88 CI)
9.5-1 cast flat-top pistons (stock is 8.9-1)
H-D SE-204 cams (stock cams are for emissions, not HP)
H-D Free-flow air cleaner and vintage cover
H-D Race Tuner (needed to adjust the EFI for mods. above)
RoadHouse Brand 2-1 Exhaust with "Quiet" Muffler pack (looks like a 40´s Harley and works MUCH better than the stock 2-2)

Here in Denver at 5,280 feet it dynoed 90 ft/lbs of torque and 79.5 HP at 4,000 rpm with a very flat torque curve after break-in. You should do much better at lower altitudes. If you haven´t tried the big bore kit, the bike was designed for it (so I am told) and it really feels much stronger than 88 CI. Since I had to replace the pistons anyway, I went for a little more compression. The 204 cams work great, although I am told the bike could use even a 211 or 257 cam and 10.5-1 pistons with no problem.

These mods really wake the bike up. You won´t believe the difference from the stock bike. 
 
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