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Power FC Do I have to retune for 1300 injectors?

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Old 10-09-01, 08:23 PM
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Do I have to retune for 1300 injectors?

Do I have to retune my PFC for 1300 secondaries?

I know I have to change the injector duty to 1300.....

Anything else?
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Old 10-10-01, 07:44 AM
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From owner consensus, you might need to fine tune your fuel a little. XS also told this to a friend.

I'm currently having my 850s punched out to 1200s
by RC. I will be doing the exact same thing when I get them back.
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Old 10-10-01, 08:14 AM
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Question

Originally posted by cewrx7r1
From owner consensus, you might need to fine tune your fuel a little. XS also told this to a friend.

I'm currently having my 850s punched out to 1200s
by RC. I will be doing the exact same thing when I get them back.
Chuck, how much is RC charging you to do this?

thanks,
Rich
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Old 10-10-01, 11:32 AM
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You will have to fine tune, but you also need to change the Injector Pulse Timing Correction. Here are the values for 1300cc injectors.

FR-PR 100% -0.12
FR-SC 100% +0.16
Rr-Pr 100% -0.12
Rr-Sc 100% +0.16

Hope that helps

Jason
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Old 10-10-01, 02:12 PM
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Rich,

RC told me $175 per injector with about a 2 week turnaround.

Chuck
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Old 10-10-01, 06:14 PM
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http://www.rxecret7.com/rcenporin13s.html

Check out this link for $140 per injector.....

Im getting 1300cc injectors on the special...

Jason....Thanks for the info on the injector dutys
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Old 10-11-01, 09:49 AM
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Those are top feed injectors, you would have to use a new fuel rail if they send the ones in the pic.
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Old 10-11-01, 01:46 PM
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Originally posted by cewrx7r1
From owner consensus, you might need to fine tune your fuel a little. XS also told this to a friend.

I'm currently having my 850s punched out to 1200s
by RC. I will be doing the exact same thing when I get them back.
Hi Chuck,
I should be getting the 1200cc soon, let me know what fine tuning you are doing.
Thanks Colin
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Old 10-11-01, 04:53 PM
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Jason,

Why do you have to change to timing on the 2 primary injectors if they are staying the same? I can see the reason for the change for the secondaries going to 1300 and is it really that much of a change?

stock 850cc lag time .77
1300cc lag time .93

the difference shown by the +.16msec listed earlier.

Thanks for the info and clarification,

Tim Benton
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