# FMU + 450CC's?

**URL:** <https://forum.g2ic.com/t/fmu-450ccs/71700>\
**Category:** Forced Induction\
**Created:** [June 17, 2006, 7:53pm UTC](https://forum.g2ic.com/t/fmu-450ccs/71700 "2006-06-17T19:53:50Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![system](https://forum.g2ic.com/user_avatar/forum.g2ic.com/system/32/1_2.png) [@system](https://forum.g2ic.com/u/system)\
**Post date:** [June 17, 2006, 7:53pm UTC](https://forum.g2ic.com/t/fmu-450ccs/71700/1 "2006-06-17T19:53:50Z")

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can i use both or is it one or the other? im confused because the fmu is to bring up the pressure of your injectors. some one help me out.

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**Author:** ![redDAinteg](https://forum.g2ic.com/letter_avatar_proxy/v4/letter/r/898d66/32.png) [@redDAinteg](https://forum.g2ic.com/u/redDAinteg)\
**Post date:** [June 17, 2006, 8:47pm UTC](https://forum.g2ic.com/t/fmu-450ccs/71700/2 "2006-06-17T20:47:34Z")

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only one.

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**Author:** ![RedLine](https://forum.g2ic.com/letter_avatar_proxy/v4/letter/r/4bbf92/32.png) [@RedLine](https://forum.g2ic.com/u/RedLine)\
**Post date:** [June 20, 2006, 11:51am UTC](https://forum.g2ic.com/t/fmu-450ccs/71700/3 "2006-06-20T11:51:45Z")

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No FMU needed IMO…A good Tune and you should be fine. I am running with CHROME Tuning and I am running all day at 7lbs. Stock internals and all. No FMU, with 450 Injectors…