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Corvette
C5 Forum
Fuel injectors
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<blockquote data-quote="brownrd" data-source="post: 245686" data-attributes="member: 4308"><p>I have a 2000 M6 with H/C/I and long tube headers. Your stock injectors will likely be near 100% duty cycle at WOT. Some will say provided you are not tracking the car (i.e. very little time spent at WOT) this is ok since you run little risk of overheating the injector. Most will say that you should size injectors to get no more than 80% duty cycle. Your choice for new injectors depends on budget, recommendation from your tuner, plans for the future (eg. spray, blower, etc.). The most important thing is to get injectors with good data that is readily available.</p><p></p><p>High budget and really good data: Injector Dynamics 725's. Expensive a hell but recognized leaders in the business.</p><p></p><p>Mid range budget and good data: GM GTP 36 lb injectors. Used in the Pontiac GTP. (42 lb/hr at 58 psi.). I have these in my car and they get to about 70% duty cycle.</p><p></p><p>Low budget and less data: used Ford SRO Red Tops (36 lb/hr at 58 psi). I was running these and they got to about 80% duty cycle at WOT.</p><p></p><p>Recommend that you talk to your tuner for their thoughts. If you are tuning yourself then get the GTP's from Summit Racing. Data is available on the HPTuner forum and on LS1Tech forum.</p></blockquote><p></p>
[QUOTE="brownrd, post: 245686, member: 4308"] I have a 2000 M6 with H/C/I and long tube headers. Your stock injectors will likely be near 100% duty cycle at WOT. Some will say provided you are not tracking the car (i.e. very little time spent at WOT) this is ok since you run little risk of overheating the injector. Most will say that you should size injectors to get no more than 80% duty cycle. Your choice for new injectors depends on budget, recommendation from your tuner, plans for the future (eg. spray, blower, etc.). The most important thing is to get injectors with good data that is readily available. High budget and really good data: Injector Dynamics 725's. Expensive a hell but recognized leaders in the business. Mid range budget and good data: GM GTP 36 lb injectors. Used in the Pontiac GTP. (42 lb/hr at 58 psi.). I have these in my car and they get to about 70% duty cycle. Low budget and less data: used Ford SRO Red Tops (36 lb/hr at 58 psi). I was running these and they got to about 80% duty cycle at WOT. Recommend that you talk to your tuner for their thoughts. If you are tuning yourself then get the GTP's from Summit Racing. Data is available on the HPTuner forum and on LS1Tech forum. [/QUOTE]
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C5 Forum
Fuel injectors
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