About what year?
 

Does the 986 S outperform the 911? Or, how old of a 911 would it have to be for a Boxster S to have more HP?

The 964 had 250

Outperform is got broad a statement. It would have to include weight, torque, gear ratios, hp.......

However, for just HP comparisons I give you the following. (Not all are from Porsche so there may be a small fluctuation, but close enough)

1964 - 1967 130 HP

1967 -1968 "S" 160 HP

1968 - 969 "T" 110 HP

1969 - 140 HP (E), 170 HP (S)

1970 - 1971 125 (T), 155 (E), 180 HP (S)

1972 - 1973 140 (T), 165 (E), 190 (S)

1974 - 1975 150 HP (210 carrerra)

1974 Carrerra RS 230 HP

1975 - 1977 165 HP

1976 - 1977 SC 180 HP

1978 -1983 260 HP

1984 - 1986 207 HP

1987 - 1989 260 HP

1989 - 1993 250 HP (carrerra 2 & 4)

1993 - 1996 272 HP (Carrerra 2 & 4)

1996 - 1999 285 HP (Carrerra 2 & 4)

From 1998 through current both 911 and Boxters were made, so I will give base 911, and both normal and "S" for the Boxster:

1998 996 - 296 HP 986 - 201 HP
1999 996 - 296 HP 986 - 201 HP
2000 996 - 300 HP 986 - 217 HP (250 S)
2001 996 - 300 HP 986 - 217 HP (250 S)
2002 996 - 315 HP 986 - 217 HP (250 S)
2003 996 - 315 HP 986 - 225 HP (258 S)
2004 996 - 315 HP 986 - 225 HP (258 S)
2005 996 - 315 HP 986 - 237 HP (276 S)
2006 997 - 321 HP 987 - 237 HP (276 S)
2007 997 - 321 HP 987 - 241 HP (298 S)
2008 997 - 321 HP 987 - 241 HP (298 S)
2009 997 - 340 HP 987 - 252 HP (306 S)
2010 997 - 340 HP 987 - 252 HP (306 S)
2011 997 - 340 HP 987 - 252 HP (306 S)
2012 991 - 340 HP 981 - 261 HP (311 S)
2013 991 - 345 HP 981 - 261 HP (311 S)
2014 991 - 345 HP 981 - 261 HP (311 S)



So now you can compare the numbers.

The POC "handicaps" cars with the goal of equal capability on the track. Its not a perfect science; some cars will have a slight advantage over some others within the same class but the variation in power/weight is within a reasonable range. All cars are considered Stock in this listing.

This list will give you a general idea of how a given Boxster matches up against other Porsche models.

Class I
Years Model
78-79 911SC
78-79911SC RoW
80-83 911SC
83-84 928S (2 Valve)
89-91 944 S2
97-99 Boxster
10+ Panamera 4

Class J
Years Model
76-77 Carrera RoW
80 911SC RoW
81-83 911SC RoW
84-86 Carrera
87-89 Carrera
84-89 911Turbo Look
86-88 944 Turbo
89-94 Carrera 4
90-94 Carrera 2
92-93 American Roadster
92-94 968
00-02 986 Boxster
03-04 986 Boxster
10+ Panamera
10+ Panamera S Hybrid

Class K
Years Model
72 914-6
73 Carrera RS (RoW)
74-75 Carrera RoW
74Carrera RS (RoW)
76-77 911 Turbo
84-89 911 Carrera (RoW)
80-83 928S RoW
84-86 928S RoW
85-86 928S
87-91 928 S4
89-91 928 GT
88 944 TurboS
89 944 Turbo
88-89 Carrera Club Sport
92-94 911RS America (USA)
95 993
96-98 993
95 993 C4
96-98 993 C2S
96-98 993 C4
96-98 993 C4S
00-02 986 Boxster S
03-04 986 Boxster S
05-07 987 Boxster
08 987 Boxster
09+ 987 Boxster
07-08 987 Cayman
09+ 987 Cayman