Best Psi
07-04-03, 05:44 PM
#1
numba 1 stunna
Thread Starter
Join Date: Dec 2002
Location: Crestline, Ohio
Posts: 359
Likes: 0
Received 0 Likes
on
0 Posts
Best Psi
I just got a boost controller and i was just wondering how many psi everyone is running so i know about what psi i should set mine at..
07-04-03, 10:04 PM
#7
SOLD THE RX-7!
Join Date: Mar 2001
Location: Vancouver, BC, Canada
Posts: 7,451
Likes: 0
Received 0 Likes
on
0 Posts
ummm.. ok... from the turbo? you have a down pipe?
still 8-9 psi max or your engine will blow
do you have an aftermarket boost gauge? get that first.
then get a bigger fuel pump. walbro 255 is good. around $100 off ebay.
still 8-9 psi max or your engine will blow
do you have an aftermarket boost gauge? get that first.
then get a bigger fuel pump. walbro 255 is good. around $100 off ebay.
Trending Topics
07-05-03, 03:28 AM
#10
Rotary Freak
Join Date: Apr 2002
Location: Boulder, CO
Posts: 1,739
Likes: 0
Received 0 Likes
on
0 Posts
was the FCD defensor covered in "all that stuff" I don't know what that package included! IF you don't have this please do this next.
07-05-03, 06:52 PM
#13
SPQR
iTrader: (1)
Join Date: Jun 2003
Location: Santa Cruz, CA
Posts: 1,123
Likes: 0
Received 0 Likes
on
0 Posts
Ha... 16.. You have a great car for being a beginning driver. Consider yourself lucky, just don't be like most 16 year olds and wrap your TII around a telephone pole.
07-05-03, 10:09 PM
#16
numba 1 stunna
Thread Starter
Join Date: Dec 2002
Location: Crestline, Ohio
Posts: 359
Likes: 0
Received 0 Likes
on
0 Posts
well sorry like i said im 16 so i dont exactly have alot of money to spend on parts but i did already order a walbro 255 like scott said and im lookin for a nice fcd..so hey give me a break..ive done all this in the last week
07-05-03, 10:16 PM
#17
Need donor car in Fairfax
Join Date: Nov 2001
Location: Northern Virginia
Posts: 1,759
Likes: 0
Received 0 Likes
on
0 Posts
after you get the fuel pump you can up the boost to .7bar (~10psi). Thats what i ran on my engine w/ walbro 255. make sure you get a boost gauge though before you ever boost..those S4 wastegates are deadly
07-05-03, 10:44 PM
#18
Senior Member
Join Date: Jan 2003
Location: Alberta
Posts: 430
Likes: 0
Received 0 Likes
on
0 Posts
Well, i can hit 12 psi on my turbo with stock internals but i have my ecu chipped.....I am kinda scared to hit the 12 though. I will hit 10 and maybe 11 with out sweatin but as soon as i get up there i am like damn time to let off the gas.....I NEED A BIGGER FUEL PUMP!!!!
07-06-03, 12:58 PM
#20
Ahhhhhhhh hhh....
Join Date: May 2003
Location: www.wRongPeople.com
Posts: 837
Likes: 0
Received 0 Likes
on
0 Posts
how much boost can i run with...
S4 87 TII stock turbo and IC
hks 3" DP
3" to the stock Y... then stock piping back to dual fart cans.
Cone filter/cold air box
walbro
HKS PFC F-CON with FCD
boost gauge
have MBC but dont think ill need it to up the boost. I may have to find a way to keep boost down.
so whats the safe limit for this setup. i was told the F-CON is good to 14 psi.. but i dunno.
jaared
S4 87 TII stock turbo and IC
hks 3" DP
3" to the stock Y... then stock piping back to dual fart cans.
Cone filter/cold air box
walbro
HKS PFC F-CON with FCD
boost gauge
have MBC but dont think ill need it to up the boost. I may have to find a way to keep boost down.
so whats the safe limit for this setup. i was told the F-CON is good to 14 psi.. but i dunno.
jaared
07-06-03, 01:58 PM
#22
EIT
Join Date: Jan 2002
Location: Austin, TX
Posts: 1,790
Likes: 0
Received 0 Likes
on
0 Posts
S4 87 TII stock turbo and IC
hks 3" DP
3" to the stock Y... then stock piping back to dual fart cans.
Cone filter/cold air box
walbro
HKS PFC F-CON with FCD
boost gauge
have MBC but dont think ill need it to up the boost. I may have to find a way to keep boost down.
so whats the safe limit for this setup. i was told the F-CON is good to 14 psi.. but i dunno.
jaared
hks 3" DP
3" to the stock Y... then stock piping back to dual fart cans.
Cone filter/cold air box
walbro
HKS PFC F-CON with FCD
boost gauge
have MBC but dont think ill need it to up the boost. I may have to find a way to keep boost down.
so whats the safe limit for this setup. i was told the F-CON is good to 14 psi.. but i dunno.
jaared
The walbro richens things up quite nicely. You'll hear all kinds of reports as to what is a 'safe' psi to run. The answer is: there is no real answer. Every car is going to be slightly different. Not every car has it's injectors flowing nice and cleanly, fuel pressure after the walbro is probably different on some cars as well. I ran 11 pounds on the dyno and my a/f numbers will still in the mid 11's virtually the entire run. I had people tell me I'd blow up my car at that amount of boost with just the walbro.
The fconn is a nice unit, but I would get a pair of 720's reagardless. The fconn won't be able to richen anything up if the stock system if already maxed out.
07-06-03, 02:44 PM
#24
Engine, Not Motor
iTrader: (1)
Join Date: Feb 2001
Location: London, Ontario, Canada
Posts: 29,789
Likes: 0
Received 108 Likes
on
91 Posts
Generally speaking, new owner + 3" exhaust + FCD + boost controller = blown engine.
Best bet is to keep the boost stock until you learn a little more and can make some informed decesions about modding the car. If you MUST do some modding, get a larger fuel pump (Walbro as mentioned) and a larger set of secondary injectors (720s) to be safe.
Best bet is to keep the boost stock until you learn a little more and can make some informed decesions about modding the car. If you MUST do some modding, get a larger fuel pump (Walbro as mentioned) and a larger set of secondary injectors (720s) to be safe.
07-06-03, 03:24 PM
#25
Currently Winning
Join Date: May 2002
Location: Birmingham, AL
Posts: 2,438
Likes: 0
Received 0 Likes
on
0 Posts
Originally posted by 88mazdarx7turbo
how much for the fcd?
how much for the fcd?