Novi 1220 SL - fmu and fuel questions

Discussion in 'Fox 5.0 Tuning' started by Cobra912, Oct 20, 2008.

  1. Cobra912 Active Member

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    I just picked up a used Paxton 1220 SL for a good price. It has the fmu with it from the kit which I'm assuming is a 12:1 set-up. I have 30lb injectors that I want to use and only a 155lph pump. Can I use the fmu if I recalibrate it to 4:1 or the proper ratio? Should I use a t-rex pump or should I just get a bigger 255lph pump?

    I know ultimately I will need to get a tune or run a pms of somesort. (sold my tweecer).

    Any suggestions?
    Cobra912, Oct 20, 2008
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  2. bock Founding Member

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    I run my 1220 with 30's and a 4:1 disc, i get a a/f ratio around 11.75 at wot... you should use a wideband for sure.... no place for lean conditons under boost!!!
    bock, Dec 2, 2008
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