C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

What Rebuild kit and Injectors

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Old Sep 18, 2024 | 02:41 PM
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Default What Rebuild kit and Injectors

I have a pretty good thought that I need to rebuild the Fuel Rail and also put in a set of Injectors in my new to me acquired C4.
What is a good complete kit for the fuel rail to get and where.
And are the Bosch III injectors the best bang for the buck?

I have a sneaky feeling that I have a bad injector as the car has been sitting for some time and the oil has a lot of fuel in it.
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Old Sep 18, 2024 | 03:26 PM
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Bosch-III's without tuning seems to be hit or miss (even if you get the same advertised flow rate as stock). There are some characteristics that often have to be accounted for in the calibration to get the best performance out of them (can go to thirdgen.org and search on voltage offsets in the DIY PROM section).

I just got done helping someone get their ECM retuned when he put in 280155931 Bosch-III's (24 lb/hr). The thing with them is if you do go with Bosch-III's you want to get ones that have a valid datasheet behind them (these particular ones had data). Otherwise you could end up pulling your hair out trying to get the tune dialed in (which happened to me a few years ago when I first ran them on my car).

For people not looking to get into the ECM, the Delphis seem to be the most factory compatible (though I understand they're a little pricier).
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Old Sep 18, 2024 | 03:56 PM
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Originally Posted by ULTM8Z
Bosch-III's without tuning seems to be hit or miss (even if you get the same advertised flow rate as stock). There are some characteristics that often have to be accounted for in the calibration to get the best performance out of them (can go to thirdgen.org and search on voltage offsets in the DIY PROM section).

I just got done helping someone get their ECM retuned when he put in 280155931 Bosch-III's (24 lb/hr). The thing with them is if you do go with Bosch-III's you want to get ones that have a valid datasheet behind them (these particular ones had data). Otherwise you could end up pulling your hair out trying to get the tune dialed in (which happened to me a few years ago when I first ran them on my car).

For people not looking to get into the ECM, the Delphis seem to be the most factory compatible (though I understand they're a little pricier).
Thanks for the heads up.
Can you post a link by chance of the Delphis you are meaning?
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Old Sep 18, 2024 | 04:20 PM
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Originally Posted by Champ198
Thanks for the heads up.
Can you post a link by chance of the Delphis you are meaning?
Southbay fuel injectors sells them. Can probably drop them an email or call. They can fill you in.
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