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Old Apr 13, 2010 | 10:42 AM
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declan
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when i had a tune last year on my 99 coupe the tuner told me my injectors were at 92% can i change to a bigger injector without having to retune
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Old Apr 13, 2010 | 02:03 PM
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Originally Posted by declan
when i had a tune last year on my 99 coupe the tuner told me my injectors were at 92% can i change to a bigger injector without having to retune
No, the PCM needs to know the injector flow rate as well as voltage offset, short pulse adder, etc. to properly calculate fueling requirements.

Ed M
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Old Apr 17, 2010 | 05:53 PM
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I agree-----however on my 375 RWHP car my duty cycles are in the 92-95 range and i am still using the stock injectors--As long as you don't run it WOT for long periods on time it should be OK---I drag race mine and for a 1/4 run its fine--If you run it over 90% for a long time say 20 seconds to a minute the injectors will overheat and will not send the proper fuel amount and eventually burn up
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