FAQ

We have developed a quick guide to let you know roughly how big your injectors need to be to achieve a particular power output.

THIS IS A GUIDE ONLY, WHEN SELECTING INJECTORS FOR YOUR CAR YOU NEED TO CHECK WITH YOUR TUNER TO MAKE SURE YOU ARE BUYING THE CORRECT SIZE. INJECTORS ONLINE WILL TAKE NO RESPONSIBILITY IF YOU HAVE CHOSEN THE INCORRECT INJECTOR SIZE FOR YOUR APPLICATION AND NO REFUND WILL BE GIVEN IF YOU SELECT THE WRONG SIZE AND HAVE FITTED THEM TO YOUR CAR.

 

Whe using this guide you need to take a few things into consideration:

- Horsepower is at the engine (you lose roughly 30% if calculating from the wheels)

- Injector duty cycle is 80%

- Fuel pressure is 43.5 psi (3 bar)

- 4 different scenarios are covered depending on what fuel you are using and if it is turbo, supercharged or NA

 

PETROL with a TURBO or SUPERCHARGER 

	4 cyl		6 cyl		8 cyl
HP	cc/min	lb/hr	cc/min	lb/hr	cc/min	lb/hr
200	328	31	219	21	164	16
300	492	47	328	31	246	24
400	657	63	438	42	328	31
500	820	79	547	52	410	39
600	984	95	657	63	492	47
700	1149	110	766	74	574	55
800	1312	126	864	83	657	63
900	1477	142	984	95	738	71
1000	1641	158	1093	105	820	79
1100	1804	173	1203	116	902	87
1200	1969	189	1312	126	984	95
1300	2133	205	1422	137	1067	102
1400	2297	221	1531	147	1149	110
1500	2461	236	1641	158	1230	118

 

PETROL, NATURALLY ASPIRATED

 

	4 cyl		6 cyl		8 cyl
HP	cc/min	lb/hr	cc/min	lb/hr	cc/min	lb/hr
200	295	28	197	19	148	14
300	443	42	295	28	221	21
400	591	56	394	38	295	28
500	738	70	492	47	369	35
600	886	84	591	56	443	42
700	1034	98	689	66	517	49
800	1181	113	778	75	591	56
900	1329	127	886	84	664	63
1000	1477	141	984	94	738	70
1100	1624	155	1083	103	812	77
1200	1772	169	1181	113	886	84
1300	1920	183	1280	122	960	91
1400	2067	197	1378	131	1034	98
1500	2215	211	1477	141	1107	105

 

E85 with a TURBO or SUPERCHARGER

 

	4 cyl		6 cyl		8 cyl
HP	cc/min	lb/hr	cc/min	lb/hr	cc/min	lb/hr
200	426	41	285	27	214	21
300	640	61	426	41	319	31
400	854	82	569	55	426	41
500	1066	102	711	68	533	51
600	1280	123	854	82	640	61
700	1493	143	995	96	747	72
800	1706	164	1124	108	854	82
900	1920	184	1280	123	959	92
1000	2133	205	1421	136	1066	102
1100	2346	225	1564	150	1173	113
1200	2559	246	1706	164	1280	123
1300	2773	266	1849	178	1387	133
1400	2986	287	1990	191	1493	143
1500	3199	307	2133	205	1599	154

 

E85, NATURALLY ASPIRATED

 

	4 cyl		6 cyl		8 cyl
HP	cc/min	lb/hr	cc/min	lb/hr	cc/min	lb/hr
200	384	37	256	25	192	18
300	576	55	384	37	287	28
400	768	74	512	49	384	37
500	959	92	640	61	480	46
600	1152	111	768	74	576	55
700	1344	129	896	86	672	65
800	1535	147	1011	97	768	74
900	1728	166	1152	111	863	83
1000	1920	184	1279	123	959	92
1100	2111	203	1408	135	1056	101
1200	2304	221	1535	147	1152	111
1300	2496	240	1664	160	1248	120
1400	2687	258	1791	172	1344	129
1500	2880	277	1920	184	1439	138