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AFC with low C/R ?

Old 11-11-2004, 11:00 AM
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Default AFC with low C/R ?

I understand that using a AFC shifts the ignition timing up, and I also under stand that low compresstion ratio can run more agressive timing. Would AFC/450's and 8.5:1 make a safe combination generally speaking?

I do not have the custom burn ECU option for my car.
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Old 11-11-2004, 04:13 PM
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Default Re:AFC with low C/R ?

So nobody has any comments on if the high timing added by the AFC/450's can be canceled out from a lower compresstion ratio?
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Old 11-12-2004, 03:33 PM
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Default Re:AFC with low C/R ?

You would be safer than say a stock C/R.

But if you have the time/money to install lower comp slugs...then just go DIY ECU (TurboEdit or Uberdata)...you'd be 10x safer.

How high are you planning to boost?
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Old 11-20-2004, 10:40 AM
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Default Re:AFC with low C/R ?

Originally Posted by xenocron
You would be safer than say a stock C/R.

But if you have the time/money to install lower comp slugs...then just go DIY ECU (TurboEdit or Uberdata)...you'd be 10x safer.

How high are you planning to boost?
Sounds like a great idea. But it's not for a Honda, it's for my Escort. A low compresstion motor is free, or really damn close to free. All you need is a 1.9 block with a 2.0 head, and junk yard's practicly give those away.
There is'nt ECU support for Escorts like there is Honda's, if I could just pay 70 bucks for a chip I would, but I cant.
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Old 11-20-2004, 04:10 PM
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Default Re:AFC with low C/R ?

there are plenty of d15b7's running the afc hack with 9-ish or lower c/r's, so it looks like you'll be fine. then again, you could always try a msd btm.
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Old 11-20-2004, 08:49 PM
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Default Re:AFC with low C/R ?

A BTM would be your best bet to retard timing with your setup. Or you could take it out of the base.
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Old 11-21-2004, 07:22 PM
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Default Re:AFC with low C/R ?

Originally Posted by CSaddict
A BTM would be your best bet to retard timing with your setup. Or you could take it out of the base.
as far as i know a BTM does little to nothing for the advance the hack creates...
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Old 11-23-2004, 03:38 PM
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Default Re:AFC with low C/R ?

Originally Posted by xenocron
as far as i know a BTM does little to nothing for the advance the hack creates...
I have read the same thing also. Plus my car uses a coil pack, so I'd need the MSD Dis-2.

I just went a head and tried low compresstion, works for me. No more deto, no matter what I try to throw at it. Even at the stock N/A timing.
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