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when to upgrade injectors?

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Old Oct 21, 2012 | 12:09 AM
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When should you upgrade injectors I'm not sure if I bought these Bosch 36lb injectors if I need them or not mod list

Bbk intake
True duals w/Bbk headers
Torquer v2 cam ls6 heads
Harpland rockers
M6
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Old Oct 21, 2012 | 12:27 AM
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I would definitely run them. It would suck to install the mods and begin having the car tuned and realize you've ran out of injector before you could make peak power. That combo is good for at least 400 to the wheels.
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Old Oct 21, 2012 | 12:30 AM
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When you tune your car your tuner should be able to tell you. Word is at around 450+ rwhp. You are probably fine.
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Old Oct 21, 2012 | 12:33 AM
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Ok cool ill stick them in didn't want to over do it
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Old Oct 21, 2012 | 12:48 PM
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I would change them. My car maxed out the injectors around 400rwhp when the weather was hot. You have to remember also that the PCM will demand more fuel when the weather cools.
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Old Oct 21, 2012 | 12:52 PM
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Agreed, no harm in throwing them in.
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Old Oct 21, 2012 | 02:17 PM
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Originally Posted by Reckless
I would change them. My car maxed out the injectors around 400rwhp when the weather was hot. You have to remember also that the PCM will demand more fuel when the weather cools.
I didn't know that that's good to know... Did you upgrade your injectors?? Did you retune how much ho did you pick up
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Old Oct 21, 2012 | 02:58 PM
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Save your money.
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Old Oct 22, 2012 | 09:25 AM
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Well mine happened during tuning. I didn't expect to make over 400, so I left the stockers in there. On the dyno I was at or over 100% duty cycle in hot weather. So I swapped in the 36 pound Bosch injectors to get it back down the 80s. It was making a shade over 400 and then peaked at 416 after the swap. You can listen to whoever you want to, it's your engine. Lean conditions at WOT will cause detonation and your engine. It's always good insurance to "over-do" your fuel system.
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Old Oct 22, 2012 | 10:19 AM
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My car was at 94-96% duty cycle with nothing but a small cam and bolt ons. Once the 799 heads and bigger cam went on, I was at 105% by 5000rpm.

Get the injectors but keep in mind you cannot just put them in and go. The tune must be corrected for the injectors before you run it at all.
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Old Oct 22, 2012 | 10:36 AM
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Originally Posted by thunderstruck507
My car was at 94-96% duty cycle with nothing but a small cam and bolt ons. Once the 799 heads and bigger cam went on, I was at 105% by 5000rpm.

Get the injectors but keep in mind you cannot just put them in and go. The tune must be corrected for the injectors before you run it at all.
Yea I already got the injectors I was wondering if I needed them.. I tries to throw them in before this rebuild it wasn't liking it so I put stock back in I'm going to put them back in before my tune thanks..
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Old Oct 22, 2012 | 10:38 AM
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Originally Posted by Reckless
Well mine happened during tuning. I didn't expect to make over 400, so I left the stockers in there. On the dyno I was at or over 100% duty cycle in hot weather. So I swapped in the 36 pound Bosch injectors to get it back down the 80s. It was making a shade over 400 and then peaked at 416 after the swap. You can listen to whoever you want to, it's your engine. Lean conditions at WOT will cause detonation and your engine. It's always good insurance to "over-do" your fuel system.
No I'm going to listen to the people like you that been threw this before... Thanks for your input man I'm going to stick them in before tune and a new fuel pump in near future
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Old Oct 22, 2012 | 02:50 PM
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I bought 36# FIC injectors when I did my cam swap. Awesome quality and made tuning very easy!
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