MINI2

Bootsy · Dec 24th, 2005, 12:19 PM

If the stock injectors provide adequate F/A ratio then what is to be gained by putting in larger injectors? Seems the A/F ratio will be the same regardless of injector size.

If due to engine modification (more boost?) the stock injectors become inadequate, how will one know?

In the event that the injectors are inadequate does the ECU prevent a leaned out condition - say by throttling back with subsequent HP loss?

Finally, at what point with respect to engine modification will larger injectors become necessary?

ScottishcooperS · Dec 24th, 2005, 12:26 PM

Good Questions..........cant wait for someone to answer!

RedUn · Dec 24th, 2005, 02:04 PM

Quote: Originally Posted by Bootsy

If the stock injectors provide adequate F/A ratio then what is to be gained by putting in larger injectors? Seems the A/F ratio will be the same regardless of injector size.

If due to engine modification (more boost?) the stock injectors become inadequate, how will one know?

In the event that the injectors are inadequate does the ECU prevent a leaned out condition - say by throttling back with subsequent HP loss?

Finally, at what point with respect to engine modification will larger injectors become necessary?

Roland is prolly gonna be the best to answer this as he's done quite a bit of testing with different injectors and wideband sensors

only thing I can tell you is the standard injectors cope upto about 250/260bhp then after that it starts to lean out top end and bigger injectors are needed

Dec 24th, 2005, 12:19 PM	#1
Bootsy MINI2 Regular Join Date: Mar 2004 Location: Florida East Coast Local Time: 06:11 PM Posts: 57 Offline	Why Injectors? If the stock injectors provide adequate F/A ratio then what is to be gained by putting in larger injectors? Seems the A/F ratio will be the same regardless of injector size. If due to engine modification (more boost?) the stock injectors become inadequate, how will one know? In the event that the injectors are inadequate does the ECU prevent a leaned out condition - say by throttling back with subsequent HP loss? Finally, at what point with respect to engine modification will larger injectors become necessary?

Dec 24th, 2005, 12:26 PM	#2 (permalink)
ScottishcooperS MINI2 Senior Join Date: Nov 2005 Location: Aberdeen Local Time: 10:11 PM Posts: 388 Offline	Good Questions..........cant wait for someone to answer! a l t a - j c w - e i b a c h - u l t r a - g t t m i l l t e k - s p e e d l i n e

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Dec 24th, 2005, 02:04 PM	#3 (permalink)
RedUn MUGEN POWER Join Date: Mar 2003 Location: s2ki.com Local Time: 11:11 PM Posts: 11,615 Offline	Quote: Originally Posted by Bootsy If the stock injectors provide adequate F/A ratio then what is to be gained by putting in larger injectors? Seems the A/F ratio will be the same regardless of injector size. If due to engine modification (more boost?) the stock injectors become inadequate, how will one know? In the event that the injectors are inadequate does the ECU prevent a leaned out condition - say by throttling back with subsequent HP loss? Finally, at what point with respect to engine modification will larger injectors become necessary? Roland is prolly gonna be the best to answer this as he's done quite a bit of testing with different injectors and wideband sensors only thing I can tell you is the standard injectors cope upto about 250/260bhp then after that it starts to lean out top end and bigger injectors are needed

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