lexus afm and 550s

[supra8903]

i have a lexus afm and 550s, i want to know if i need a afpr or a larger pump. Im on the stock turbo now, and i want about 14.5psi, will i be safe with just the 550s and the lexus afm. I will also have a safc II in about a month. Will i be ok till then.

Joe

 

[sleepersupra]

i have a lexus afm and 550s, i want to know if i need a afpr or a larger pump. Im on the stock turbo now, and i want about 14.5psi, will i be safe with just the 550s and the lexus afm. I will also have a safc II in about a month. Will i be ok till then.

Joe

i don't know about safe but i had 550's and lexus w/ no pump and it ran real dawgish....if thats a word. so yes to the pump and i have a afpr and it's not on but to tune it you need to have as far as i know.

someone else will chime in

 

[bigal0043]

def need a bigger fuel pump and i heard you dont need the afpr but i would get it just so you can get it running the best she can be... before the safc

 

[shaeff]

long answer- read this:

http://rob.carlile.home.mchsi.com/lexus/lexus1.htm

if you still don't understand, read it again, and if you still have questions, i'll be happy to answer them.

after you've read that, i'll tell you the short answer.


-shaeff

 

[supra8903]

ok so whats the short answer. im still wondering

 

[bigal0043]

some people get them some dont... its up to u

i would say to get one

 

[MKIIINA]

you dont NEED it right off the bat. however i recommend you do it. i have been running the lex 550 setup for sometime now w/o the pump and reg with no issues and im still rich as hell!

 

[shaeff]

short answer: change the darn fuel pump. it's only $99 shipped from ebay, and is damn good insurance that your stocker doesn't die on you.

-shaeff

 

[Jspec7m88]

$99 shipped on ebay, huh? Are you referring to a Walboro 255lph?

 

[89Turbo]

we need a Lex AFM and 550's sticky.

 

[Jspec7m88]

Well I've been trying to search for the past hour on anything about the Lex/550's combo and what the pros/cons are to using one without the other and what not...There really does need to be a sticky...

 

[The Reaper]

i have lex afm and 550's and a SAFCII and stock pump. ran 16 psi daily on the stock ct and i was still 10.x:1 AFR.

 

[shaeff]

^ you're brave. don't be surprised if your motor grenades itself due to lack of fuel after the stock pump dies.

and jspec, yes, i'm referring to the aforementioned pump.

pro- it raises fuel cut
con- it's limited in adjustability as far as tuning alone. add in an SAFC and an AFPR and you can hit 500rwhp on this setup.

-shaeff

 

[tonysupra]

i recommended getting both the larger pump and afpr. I have the safcII also but i didn't want to cut corners. with this set up, like shaeff said, it's capable of high numbers.