Question on XFC

hosrom · Newbie Joined: Jul 05, 2006 Posts: 1

Hello,
I was browsing the net and found this interesting product, but i have to admit, i had my eyes on a similar product, but wanted to know about the XFC.

First of all, my car is a porsche 944 turbo, it has a AFM. Could i delete the AFM and fun a MAP set-up using the XFC?

As long as the XFC could give a 0-5v, i guess this would work, but what about the MAP sensor?

Could one convert from batch fired injectors to sequential?

Does it have an 'automatic' AFR adjusting curve? example, could i dial in 12.5:1 AFR at certain loads, or is it a matter of adding/removing values in cells?

TIA

jballenger · Posted: Thu Jul 06, 2006 3:43 pm Post subject:

You can use the XFC to convert and AFM/MAF based system to a MAP based system. However, this would be a major undertaking that we generally don't recommend.

The injector firing sequence is not controlled by the XFC. The XFC does support a closed loop fuel pressure system and additional injectors, both of which are good methods of adding fuel to support a higher level of power. These fuel addition systems work with batch or sequential systems.

Yes, the XFC does have a closed loop learn system that utilizes the stock o2 learn values to dial in the desired AFR values. To dial in a specific AFR at most rich AFR values would also require a wideband o2 system.
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James Ballenger
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