need rising rate FPR??

Joey's mx · Post by **Joey's mx** » November 14th, 2005, 8:52 pm

Just wondering if i would need to run a rising rate fuel pressure regulator on a vj11 set up on a DOHC B6 at around 7-8 psi??? Or would a adjustable fuel pressure regulator be good enough with bigger injectors??

XxantwawnxX · Post by **XxantwawnxX** » November 14th, 2005, 10:04 pm

I think FMU would be better..so you can run nice on boost..and not be rich as crap on idle. so yeah a rrfpr or fmu.

babyblueMX3 · Post by **babyblueMX3** » November 15th, 2005, 10:30 am

rrfpr = fmu

XxantwawnxX · Post by **XxantwawnxX** » November 15th, 2005, 12:00 pm

Yea when i said rrfpr or fmu...i did not mean one or the other...i meant there the same. Guess i could of worded it better.

Joey's mx · Post by **Joey's mx** » November 15th, 2005, 5:36 pm

By FMU you mean like a s-afc??

XxantwawnxX · Post by **XxantwawnxX** » November 15th, 2005, 5:48 pm

No an FMU is the same thing as a rrfpr (rsing rate fpr) which is just installed in series of your stock fpr. It uses boost pressure to raise the fuel pressure accordingly. For low boost operations i hear these work fine , im using one for my 4-6 psi boost configureration.

Joey's mx · Post by **Joey's mx** » November 15th, 2005, 6:03 pm

Where would i find one and how much are they?? Dfoes it replace the fuel pressure regulator, or do i still use my adjastable fuel pressure regulator??

XxantwawnxX · Post by **XxantwawnxX** » November 15th, 2005, 6:07 pm

You can find them all over ebay. I think vortec has some..and cartech. Usually i see prices from 100-300.

Joey's mx · Post by **Joey's mx** » November 15th, 2005, 6:08 pm

do i still use my adj. fuel pressure regulator also??

Joey's mx · Post by **Joey's mx** » November 15th, 2005, 6:08 pm

do i still use my adj. fuel pressure regulator also??

XxantwawnxX · Post by **XxantwawnxX** » November 15th, 2005, 6:28 pm

If im not mistaken, your adjustable FPR replaces your stock FPR right? If so then yes you can still use it. Just put the FMU in series with the adj FPR.

Joey's mx · Post by **Joey's mx** » November 15th, 2005, 8:15 pm

ok thanks

rukick · Post by **rukick** » November 20th, 2005, 12:02 am

This is what you want: RRFPR is different from FMU.
http://www.bellengineering.net/Pages/products_FPR.html

babyblueMX3 · Post by **babyblueMX3** » November 20th, 2005, 8:50 am

rukick wrote:This is what you want: RRFPR is different from FMU.
http://www.bellengineering.net/Pages/products_FPR.html

huh ? where do you come from..the link you posted is for BEGI fmu ..the same one I used to run with
rrfpr = fmu !!

scroll down your page, click on :

Click here for the 2020 Series FMU

then tell me what are the first words on the other page.:

yeah that's what I thought.

Before telling somebody they're wrong, get your facts straight first
No offense

http://www.racetep.com/begireg.html

Joey's mx · Post by **Joey's mx** » November 20th, 2005, 9:05 am

so would the fmu go before or after the stock regulator??