turbo accesories question

brendon · 02-14-2001, 09:47 AM

it seems to me that i've heard people having the best luck with a 5:1 rrfpr for mild boost applications 5-8 lbs jus trying to confirm this. also wondering what fuel pumps seem to work the best for the same set up. and are exterior fuel pumps too loud or should a guy go for the in tank style. thanks for the help.

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Pipercub · 02-14-2001, 09:50 AM

I have a 4:1 and my SAFC enrichment rises up to about 14% at it's peak. I am sure with a 5:1 I would have it leaned out a bit so a 4:1 or 5:1 should get you to just either side of the desired fuel curve.

Tim Prudence · 02-14-2001, 05:51 PM

I have a 5:1 rising rate regulator, it's a begi type that doesn't start working until around 5 psi. So my fuel pressure is:

0 psi 40 lbs
1 psi 41 lbs
2 psi 42 lbs
3 psi 43 lbs
4 psi 44 lbs
5 psi 65 lbs
6 psi 70 lbs
7 psi 75 lbs

Well you get the point. I'm using this one because I heard (a long time ago in a post from Shiv) that we don't really need any extra fueling until your running higher boost levels. It seems to work well for me.

I'm also using a supra tt fuel pump, it's a venom performance rebuilt pump and it works nicely and is quiet. Pretty easy to install too.

02-14-2001, 10:56 PM

walboro fuel pumps are great.

im useing a 4.1 rrfpr,vortech

02-14-2001, 09:47 AM	#1
brendon Scooby Newbie Member#: 3618 Join Date: Jan 2001 Location: billings,mt	turbo accesories question it seems to me that i've heard people having the best luck with a 5:1 rrfpr for mild boost applications 5-8 lbs jus trying to confirm this. also wondering what fuel pumps seem to work the best for the same set up. and are exterior fuel pumps too loud or should a guy go for the in tank style. thanks for the help. * Registered users of the site do not see these ads.

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02-14-2001, 09:50 AM	#2
Pipercub Scooby Specialist Member#: 2188 Join Date: Aug 2000 Location: Remington VA` Vehicle: 2004 Impreza STI 82 BRAT with 12 in. lift	I have a 4:1 and my SAFC enrichment rises up to about 14% at it's peak. I am sure with a 5:1 I would have it leaned out a bit so a 4:1 or 5:1 should get you to just either side of the desired fuel curve.

02-14-2001, 05:51 PM	#3
Tim Prudence Scooby Specialist Member#: 216 Join Date: Aug 1999 Location: san diego, ca USA	I have a 5:1 rising rate regulator, it's a begi type that doesn't start working until around 5 psi. So my fuel pressure is: 0 psi 40 lbs 1 psi 41 lbs 2 psi 42 lbs 3 psi 43 lbs 4 psi 44 lbs 5 psi 65 lbs 6 psi 70 lbs 7 psi 75 lbs Well you get the point. I'm using this one because I heard (a long time ago in a post from Shiv) that we don't really need any extra fueling until your running higher boost levels. It seems to work well for me. I'm also using a supra tt fuel pump, it's a venom performance rebuilt pump and it works nicely and is quiet. Pretty easy to install too.

02-14-2001, 10:56 PM	#4
tluzziracing Guest Member#:	walboro fuel pumps are great. im useing a 4.1 rrfpr,vortech