Hi i have a 69 charger 440 with a1200 unit that i have a procharger F1 on. The unit is perfect on idle and cruise but when i was on the dyno it starting to lean out over 4750rpm (498hp at The hubs) afr was 13 and going up and lean so i shut IT off! Want to reach 6500rpm at 11,9 afr so i can get out The rest of The hp) I have a tankinc fuel tank w/ walbro 400 pump to feed a surge tank and i use 2 walbro 450 to feed a magnafuel FrP i know tid is overkill but i have one of The walbro on pressure switch ! The blower is phusing 10 psi at 4750rpm and i have a 2 stage water/meth . I have Try to adujst afr Target under boost on The controller but no change!! Do any one have any tip or what i can do?? I allso have like a backfire or bogs at 5000rpm? I am new to boost and efi and its not do many here in norway that use fitech #ad
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Awesome looking car. It might be a good idea to post this in the EFI section of the forum

 

sick car ! mopar ftw !!!

 

Thanks i Will Try that

 

Thanks