Disclaimer: This doesn't include every game during this span because I haven't been able to find official statistics for all of the games during that time.

Here are the results of BYU games, sorted by pass efficiency:

Year	Opponent		W/L	Att	Comp	Yards	TDs	INTs	Rating	Points
1996	Rice           		W	15	12	219	3	1	255.31	49
1995	Fresno St.     		W	34	31	399	3	0	218.87	45
1996	Texas A&M      		W	44	33	536	6	1	217.78	41
1991	Hawaii         		W	20	14	225	3	0	214.00	35
2001	SDSU           		W	24	19	266	3	0	213.52	59
1996	TCU            		W	26	20	313	3	1	208.43	45
1990	SDSU           		W	38	26	514	3	0	208.09	62
1992	Penn St.       		W	19	13	220	3	1	207.26	30
1995	Hawaii         		W	27	21	298	3	0	207.16	45
1996	UNLV           		W	37	24	426	5	0	206.17	63
1991	CSU            		W	31	24	343	3	0	202.30	40
2004	SDSU           		W	27	16	339	3	0	201.39	49
1991	Utah           		W	30	18	378	5	3	200.84	48
1996	Tulsa          		W	32	21	329	5	1	197.30	55
1994	UNM            		W	24	18	228	3	0	196.05	49
1984	AFA            		W	41	28	484	4	1	194.77	30
2001	California     		W	28	19	295	3	0	191.71	44
1996	SMU            		W	31	24	375	1	0	189.68	31
1990	UNM            		W	50	33	575	5	2	187.60	55
2001	Tulane         		W	33	27	297	3	0	187.42	70
2004	AFA            		W	31	20	319	4	1	187.08	41
1995	UNM            		W	27	18	303	2	0	185.38	31
1998	SJSU           		W	20	13	245	1	0	184.40	46
1994	Oklahoma       		W	45	31	454	4	0	182.97	31
1994	USU            		W	27	17	306	2	0	182.61	34
1996	Arkansas St.   		W	30	20	302	4	2	181.89	58
2001	AFA            		W	43	27	408	5	0	180.87	63
2000	Virginia       		W	41	34	447	2	2	180.85	38
1986	AFA            		W	20	11	258	1	0	179.86	23
1999	AFA            		W	33	24	336	2	0	178.25	27
1985	Wyoming        		W	34	23	328	3	0	177.80	59
1991	AFA            		W	30	20	340	2	1	177.20	21
1984	Wyoming        		W	44	29	384	5	0	176.72	41
1994	NE Louisiana   		W	28	20	256	3	1	176.44	24
2001	USU            		W	35	25	304	4	1	176.39	54
1991	SDSU           		T	54	31	599	6	3	176.14	52
1991	UNM            		W	41	25	396	4	0	174.30	41
1984	Baylor         		W	43	28	315	6	0	172.70	47
1985	Temple         		W	36	24	321	4	1	172.68	26
1992	UTEP           		W	28	17	302	3	2	172.39	38
1985	USU            		W	41	27	401	3	0	172.16	44
1990	AFA            		W	46	33	429	3	0	171.60	54
2001	CSU            		W	27	21	284	1	1	170.95	56
1998	Hawaii         		W	26	20	212	2	0	170.80	31
1998	UNM            		W	44	26	427	4	0	170.61	46
1992	Wyoming        		W	40	24	408	3	0	170.43	31
2004	Boise State    		L	35	20	390	2	0	169.60	27
1985	CSU            		W	56	44	488	3	0	169.45	42
1990	USU            		W	53	33	595	5	5	168.83	45
1989	Navy           		W	38	27	363	2	0	168.66	31
1997	Tulsa          		W	30	16	247	4	0	166.49	49
1991	Wyoming        		W	33	21	321	2	0	165.35	56
1986	USU            		W	41	28	402	3	2	165.04	52
1990	Wash St.       		W	50	32	448	5	2	164.26	50
1999	CSU            		W	37	28	310	2	0	163.89	34
1989	Washington St. 		L	53	34	537	4	3	162.85	41
1999	USU            		W	36	23	289	4	1	162.43	34
1995	SDSU           		W	39	31	405	0	1	161.59	31
1985	UNM            		W	61	42	585	4	3	161.21	45
2001	Nevada         		W	40	25	389	2	0	160.69	52
1992	Fresno St.     		W	25	16	272	1	1	160.59	36
1992	UNM            		W	25	16	256	2	2	160.42	35
1992	Hawaii         		L	36	21	381	2	1	160.01	32
1994	AFA            		W	37	24	324	3	1	159.77	45
1984	New Mexico     		W	32	21	240	3	0	159.56	48
1997	Washington     		L	33	20	306	2	0	158.50	20
1990	Utah           		W	50	28	451	5	2	156.77	45
1990	Wyoming        		W	50	35	484	2	2	156.51	45
1995	Arizona St.    		L	29	19	282	2	2	156.17	21
1986	UNM            		W	40	28	361	3	3	155.56	31
1989	UNM            		W	29	18	317	0	0	153.89	24
1992	SDSU           		L	44	23	380	5	2	153.23	38
1991	UTEP           		W	39	22	378	3	2	152.95	31
1994	UTEP           		W	39	26	330	3	2	152.87	34
1998	Murray St.     		W	32	20	313	2	2	152.79	43
1990	UTEP           		W	46	33	387	2	1	152.41	30
1995	Tulsa          		W	34	23	326	1	1	152.01	45
1999	Washington     		W	59	39	500	3	1	150.68	35
2001	Hawaii         		L	65	40	515	5	1	150.40	45
1985	Hawaii         		W	37	25	310	2	1	150.38	26
1985	Boston College 		W	53	35	508	3	4	150.14	28
1998	Utah           		W	28	20	221	1	0	149.51	26
2002	Wyoming        		W	45	31	360	3	2	149.20	35
1990	CSU            		W	40	27	326	4	4	148.96	52
1994	SDSU           		W	42	27	392	2	2	148.88	35
1998	UTEP           		W	25	17	185	2	1	148.56	31
1997	Arizona St.    		W	30	17	328	0	0	148.51	13
1990	Miami          		W	54	38	406	3	1	148.16	28
1984	Tulsa          		W	37	23	337	1	0	147.59	38
1984	CSU            		W	46	29	384	2	0	147.51	52
1985	UCLA           		L	41	29	340	2	2	146.73	24
1994	Utah           		L	46	29	324	4	1	146.56	31
1996	New Mexico     		W	27	17	276	1	2	146.24	17
1986	Washington     		L	31	18	270	2	1	146.06	21
2002	SDSU           		W	33	20	289	3	3	145.99	34
1992	USU            		W	41	21	392	3	2	145.92	30
1997	UNM            		L	22	10	182	2	0	144.95	28
2000	USU            		W	39	25	335	1	0	144.72	38
1996	Hawaii         		W	25	14	206	2	1	143.62	45
2003	SDSU           		W	27	17	180	2	0	143.41	44
1991	Iowa           		T	44	29	350	2	1	143.18	13
1997	USU            		W	50	32	436	2	2	142.45	42
1998	UNLV           		W	38	21	363	2	2	142.35	38
1996	Washington     		L	35	23	279	1	0	142.10	17
1994	Fresno St.     		W	45	25	366	3	1	141.43	32
1989	USU            		W	39	20	348	3	2	141.36	37
1996	USU            		W	39	26	330	1	1	141.08	45
2002	Syracuse       		W	55	36	397	3	1	140.45	42
1984	Utah           		W	44	27	367	3	3	140.29	24
1996	Kansas St.     		W	36	21	291	2	1	139.01	19
1995	CSU            		W	32	17	254	3	2	138.24	28
2000	UNM            		W	35	21	349	0	1	138.05	37
2004	Notre Dame     		W	33	22	263	1	1	137.55	20
1991	UCLA           		L	46	29	377	2	2	137.54	23
1999	SDSU           		W	34	22	262	2	2	137.08	30
1984	Michigan       		W	49	35	371	2	3	136.25	24
2000	Utah           		W	29	16	264	1	1	136.12	31
1996	Wyoming        		W	37	26	250	1	0	135.95	28
1998	Fresno St.     		L	27	15	219	1	0	135.91	21
1995	AFA            		L	42	25	346	2	2	134.91	12
2001	UNLV           		W	38	23	281	2	1	134.75	35
1999	Wyoming        		L	46	30	362	1	1	134.15	17
1991	Florida St.    		L	32	19	229	2	1	133.86	28
1996	UTEP           		W	33	24	232	2	3	133.60	40
1986	Utah           		W	15	12	119	0	1	133.31	35
1985	SDSU           		W	39	27	265	2	2	132.97	28
1986	UTEP           		W	30	17	228	1	0	131.51	27
1997	SMU            		W	30	22	216	1	2	131.48	19
2002	USU            		W	45	28	312	2	1	130.68	35
2001	UNM            		W	41	22	258	3	0	130.66	24
1992	Utah           		W	28	17	217	1	1	130.46	31
1997	TCU            		W	39	21	236	3	0	130.06	31
2004	UNM            		L	38	23	259	2	1	129.88	14
1998	SDSU           		W	17	12	120	0	0	129.88	13
1984	SDSU           		W	47	26	381	2	2	128.94	34
2003	UNLV           		W	44	31	274	2	2	128.67	27
2003	Georgia Tech   		W	47	31	276	3	2	127.84	24
1999	UNM            		W	30	16	225	1	0	127.33	31
1984	Pittsburgh     		W	44	26	363	1	2	126.80	20
1995	UCLA           		L	38	21	305	1	1	126.11	9
1994	Hawaii         		W	37	24	253	1	1	125.82	13
1984	Hawaii         		W	33	18	264	1	1	125.68	18
1992	Kansas         		L	31	15	262	1	1	123.57	20
2001	Wyoming        		W	38	23	268	1	1	123.19	41
1998	Tulane         		L	44	27	267	2	1	122.79	27
1985	Utah           		W	38	22	276	1	1	122.33	38
1999	Virginia       		L	47	28	303	3	3	122.03	41
1985	AFA            		W	49	29	343	3	4	121.86	28
1994	Notre Dame     		W	30	17	216	1	1	121.48	21
2000	Syracuse       		L	44	24	272	2	0	121.47	14
2004	Utah           		L	33	17	213	2	1	119.67	21
2000	SDSU           		L	58	34	376	1	0	118.77	15
1998	Alabama        		L	30	19	182	1	1	118.63	31
1986	Wyoming        		W	27	14	203	2	3	117.23	34
1990	Oregon         		L	57	33	442	2	5	117.07	16
1998	Arizona St.    		W	21	7	166	1	0	115.45	26
2001	Utah           		W	42	21	270	2	1	114.95	24
2000	Wyoming        		W	34	22	225	0	1	114.41	19
2003	USC            		L	46	29	313	1	3	114.33	18
1985	Washington     		W	39	24	292	0	2	114.17	31
1990	Texas A&M      		L	32	15	197	2	1	112.96	14
1990	Hawaii         		L	45	22	319	3	4	112.66	28
2003	Stanford       		L	46	23	310	2	2	112.26	14
2002	Utah           		L	34	20	237	0	1	111.49	6
1994	Arizona St.    		L	54	23	386	2	1	111.16	15
2002	Nevada         		L	36	19	192	2	1	110.36	28
2003	Notre Dame     		L	30	18	250	0	3	110.00	14
1995	Wyoming        		W	39	23	283	0	2	109.67	23
2004	CSU            		W	42	24	238	1	1	107.84	31
1996	Utah           		W	12	7	70	0	0	107.33	37
1984	USU            		W	52	26	338	1	1	107.10	38
2003	AFA            		L	36	19	193	1	0	106.98	10
1986	CSU            		L	39	25	265	0	3	105.79	20
2002	CSU            		L	26	17	148	0	1	105.51	10
2004	Wyoming        		W	26	11	179	1	1	105.14	24
1999	Marshall       		L	29	16	220	0	2	105.10	3
1992	AFA            		W	25	12	174	1	2	103.66	28
1998	AFA            		L	42	20	258	1	1	102.31	13
2003	UNM            		W	37	20	172	1	0	102.02	10
1999	UNLV           		W	43	23	256	1	2	101.87	29
1986	Hawaii         		W	20	9	119	1	1	101.48	10
2003	Wyoming        		L	36	21	225	0	2	99.72	10
2002	AFA            		L	46	23	325	1	4	99.13	9
2002	UNLV           		L	43	23	275	0	2	97.91	3
1994	CSU            		L	57	27	358	2	4	97.67	21
2000	Mississippi St.		L	50	27	268	1	2	97.62	28
2000	AFA            		L	40	18	235	1	1	97.60	23
2004	UNLV           		L	68	34	358	1	1	96.14	20
1992	Notre Dame     		L	56	28	339	1	3	96.03	16
1986	UCLA           		L	43	25	221	1	3	95.03	10
1997	Rice           		L	22	9	164	0	1	94.44	14
1995	Utah           		L	47	23	268	2	4	93.86	17
1997	UTEP           		L	32	17	226	0	3	93.70	3
2004	USC            		L	34	18	194	1	3	92.93	10
2000	UNLV           		W	29	15	157	0	1	90.30	10
2002	Hawaii         		W	48	21	226	1	0	90.18	35
1991	Penn St.       		L	26	8	158	1	1	86.82	7
1997	Utah           		L	16	10	70	0	1	86.75	14
1985	Ohio St.       		L	50	26	261	1	4	86.45	7
1998	Washington     		L	33	16	169	0	1	85.44	10
2002	Georgia Tech   		L	57	28	274	1	3	84.76	19
1992	UCLA           		L	38	14	234	1	3	81.46	10
2003	CSU            		L	27	11	139	1	2	81.39	13
1986	Oregon St.     		L	37	18	215	0	3	81.24	7
2004	Stanford       		L	56	28	288	0	4	78.91	10
2001	Louisville     		L	38	18	192	0	3	74.02	10
2000	Florida St.    		L	46	18	227	0	3	67.54	3
1985	UTEP           		L	35	15	151	1	4	65.67	16
2000	CSU            		L	41	18	120	1	3	61.90	21
1997	Hawaii         		W	22	10	89	0	2	61.25	17
2003	Boise State    		L	59	21	207	0	4	51.51	12
2002	UNM            		L	32	11	94	0	2	46.55	16
2003	Utah           		L	14	4	41	0	2	24.60	0
1986	SDSU           		L	25	8	73	0	4	24.53	3

Summarizing the results, we have:

Rating	Wins	Losses	Ties	PPG
>200	13	0	0	47.0
180-200	15	0	0	45.1
170-180	17	0	1	39.7
160-170	14	3	0	40.7
150-160	14	4	0	35.2
140-150	22	5	1	32.6
130-140	18	5	0	27.1
120-130	12	6	0	24.1
110-120	5	12	0	20.8
100-110	9	5	0	20.4
<100	3	30	0	12.8

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Disclaimer: This post contains a secret agenda.