im fixing to buy a VAFC2...doing some searches a lot of people bought a fpr with a vafc, i was just wondering why?

 

there's no reason to get one unless you NEED IT

if you have larger injectors and need to lower your FP to compensate for unneeded fuel...it's nice to have.

but if you have stock injectors and just need more fuel..the VAFC will take care of it...and if not, just get a vise and crush your stock FPR a little to compensate.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RLZengineEJ6 &raquo;</TD></TR><TR><TD CLASS="quote">there's no reason to get one unless you NEED IT

if you have larger injectors and need to lower your FP to compensate for unneeded fuel...it's nice to have.

but if you have stock injectors and just need more fuel..the VAFC will take care of it...and if not, just get a vise and crush your stock FPR a little to compensate.</TD></TR></TABLE> thanks...a hammer will work too right?

 

Rob &lt;-----lost now

 

just get a vise and crush your stock FPR a little to compensate.

&lt;---- will not be doing that...

 

oh

well...it works, and works well


im from NC...we're cheap here. and when something is free, and it works damn good....then why not?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 98cwitr &raquo;</TD></TR><TR><TD CLASS="quote">im fixing to buy a VAFC2...doing some searches a lot of people bought a fpr with a vafc, i was just wondering why?</TD></TR></TABLE>

There was a point a long time ago when I couldnt see why either, but once you understand how a piggyback fuel controller functions, you'll see that it can only add so much fuel (especially in the upper RPM ranges where engine breathing is heavier). The idea of the FPR is to bump up the base fuel pressure until there are no lean spots on your graph, then lean out whereever you need to with the VAFC.

 

ok so if i only want to take fuel away...then there is no point in buying a fpr, right?

 

if you have a reducer/riser then you can reduce fuel

but if you get a b&m type...you can only add

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 98cwitr &raquo;</TD></TR><TR><TD CLASS="quote">ok so if i only want to take fuel away...then there is no point in buying a fpr, right?</TD></TR></TABLE>

Basically no, although it's still nice to have some adjustability with the base pressure when tuning. As for not being able to reduce base pressure with the B&M, I'm not sure where that idea originated from, but we had no problem bringing the pressure to below-stock levels when we installed one on my brother's car.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RLZengineEJ6 &raquo;</TD></TR><TR><TD CLASS="quote">if you have a reducer/riser then you can reduce fuel

but if you get a b&m type...you can only add</TD></TR></TABLE> aem is that way, right?

 

aem's are trash

go with an aeromotive...it's worth it

 

ill look into that... thanks

 

no prob at all man

good luck with it

 

It is somewhat necessary if you do have any lean areas in your fuel curve. Fuel controllers (VAFC) have a hard time adding fuel. Like someone said above, it is better to add fuel with a FPR and subtract any rich spots with a fuel controller. Or just get a real fuel management system if you don't want to deal with that.