Thoughts on the FAST Ez-EFI system??

[g356gear]

So is this system MAP or MAf based?? I am assuming there is no timing control...just fuel control based on O2 sensor feedback.

[shaun8541]

Does anyone know if the EZ EFI will handle more than 500 hp? I have 510hp naturally aspirated on my SBF 427 and I want to add a Paxton Supercharger. Paxton says up to a 30% gain in hp over stock. Would the easy work or would I need to step up to the XFI and all the tuning costs etc?

[GregWeld]

Originally Posted by shaun8541

Does anyone know if the EZ EFI will handle more than 500 hp? I have 510hp naturally aspirated on my SBF 427 and I want to add a Paxton Supercharger. Paxton says up to a 30% gain in hp over stock. Would the easy work or would I need to step up to the XFI and all the tuning costs etc?

Personally I'd choose an XFI system once you go beyond N/A. You're going to need effective control of your timing etc and the EZ EFI will not do that.

[shaun8541]

Originally Posted by GregWeld

Personally I'd choose an XFI system once you go beyond N/A. You're going to need effective control of your timing etc and the EZ EFI will not do that.

XFI it is. Thanks Greg!

[captainofiron]

After reading this, I am definitely going with the EZ for my 68

I had always been a little nervous about getting the XFI, because of the tuning, and lack of laptop access

but now that I have read so many good things, Im sold

[GregWeld]

Originally Posted by g356gear

So is this system MAP or MAf based?? I am assuming there is no timing control...just fuel control based on O2 sensor feedback.

MAP based... and you are correct. The EZ EFI builds a VE table based on your input of cubic inches and nozzle size - fuel pressure etc... and then self corrects that table with driving and using the readings it gets from the O2. There is NO timing control. Super simple - super effective system.