other than teh obvious difference, how else are the external and internal afprs different?

does one offer any advantages over the other?

with an external one, what mods must be made to the stock (internal) afpr? does the whole thing have to be removed?

without cost as a consideration, what would you guys recommend?

but, WITH adjustability, reliability, and general performance usage as considerations what should i go with?

i want to optimize my whole fuel system, so i was debating whether to use the stock one in my 454 throttle body i am getting in the mail this week, or get an aftermarket one.

-brian

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1991 Camaro RS - ultra blue metallic, t-tops
GMPP 350 HO crate engine - TBI, MSD ignition, SLP exhaust
700R4 - 2,400 stall converter, vette servo
10 bolt - coming soon - SLP zexel torsen differential, GM 3.73s
z28boy.fbody.com
z28boy@twcny.rr.com
AIM - "Z28 Boy"

 

If you wana use an external one, you need to gut the stock one.

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-Tas
'89 Formula WS-6
[soon to have Hooker 1-5/8" 50 state legal headers installed]

305, TBI, auto, 14x3 chrome flat based open element with K&N, Milodon 160* thermo, functional Formula hood, cross-flow Flowmaster, '99z28 rear pipes and tips....

Super GRK_Taz World
EFI & Intake Options
AOL IM: superGRtaz | ICQ 82881207

 

If you gut the stock fpr then you would put the afpr on the return line. This is also a good place and time to install your fuel pressure guage.

Steve

 

you dont need to gut the stock apfr

i just plugged the return and put my fpr there on the section of rubber hose on the driverside

 

or you can just lower the pressure on the stock one all the way and put it on the return line

it will just keep you above like 9 psi always

 

k, guess I was wrong. I could have sworn pablo, you gutted the stock one...