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450 DSM injector question an timming

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Old 07-23-2006, 11:59 PM
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Default 450 DSM injector question an timming

Crome says them injectors are max out on 10psi on my car. is that right. i dont think so. Im only running 7psi so im not trying to stress the injectors out.

also im running 20 degrees timming at WOT on &psi. That should be pretty safe corrrect?
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Old 07-24-2006, 12:41 AM
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Default Re: 450 DSM injector question an timming

at 10psi you should be around 300whp or more so yes those injectors will be pushing it. Try cranking up your fuel pressure if you want to run 10psi.
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Old 07-24-2006, 05:37 AM
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Default Re: 450 DSM injector question an timming

Originally Posted by sohc_mshue
at 10psi you should be around 300whp or more so yes those injectors will be pushing it. Try cranking up your fuel pressure if you want to run 10psi.
i dont want to run 10psi. i was just wondering if crome was right or not.

how the timming?
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Old 07-24-2006, 08:36 AM
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Default Re: 450 DSM injector question an timming

up
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Old 07-24-2006, 09:07 AM
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Default Re: 450 DSM injector question an timming

the timing doesn't sound bad for a base. I usually use 1deg/psi retard for a basemap. Make sure you pull plugs or use a knock detection device to check for knock.
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Old 07-24-2006, 10:15 AM
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Default Re: 450 DSM injector question an timming

Originally Posted by sohc_mshue
the timing doesn't sound bad for a base. I usually use 1deg/psi retard for a basemap. Make sure you pull plugs or use a knock detection device to check for knock.
i checked plugs...they look good. i have a p28 so i dont have knock.
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Old 07-24-2006, 12:41 PM
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Default Re: 450 DSM injector question an timming

Hey,

CROME's calculation is incorrect once you scale injectors I believe..

so its not correct.

20 deg total timing seems perfectly fine for 7 psi
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Old 07-24-2006, 12:54 PM
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Default Re: 450 DSM injector question an timming

Originally Posted by GaRn
Hey,

CROME's calculation is incorrect once you scale injectors I believe..

so its not correct.

20 deg total timing seems perfectly fine for 7 psi
good deal. thanks
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Old 07-25-2006, 07:33 AM
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Default Re: 450 DSM injector question an timming

Originally Posted by TheBigShot
i checked plugs...they look good. i have a p28 so i dont have knock.
you can still have knock without having a knock sensor . I meant use a knock detection device to listen.
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Old 07-25-2006, 07:39 AM
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Default Re: 450 DSM injector question an timming

Originally Posted by sohc_mshue
you can still have knock without having a knock sensor . I meant use a knock detection device to listen.
i see.
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