Hks fcd not working ?

[bobpogoman]

ok guyes here are my mods:

7mgte rebuilted (im in break-in period)

ct-26 60-1
Lexus Maf
Rc engeineering injectors 550cc
Innovate motorsport wideband o2
3inch exhaust
Safc Neo
HKS FCD
Turbosmart dual stage boost controller
Spearco replica Ic + custom piping 2.5 in

im not getting any fuel cuts @ 16 psi but i dont want to beat the car too much, since im in break-in... and dont want to overboost too. i tried to put the fcd to norm and cut both dont give me any fuel cut @ 16.

i wired my fcd just before the safc neo (from engine bay) like its said in the fcd manual.

any clues?

 

[figgie]

lexus afm + 550 will net you around 20 psi before Fuel cut on that 60-1.

16 psi.

That FCD is to help take Fuel Cut OUT not put it in. Fuel Cut DEFENSOR!

As an aside and just an observation. Breaking in a motor with all the parts not being SPOT ON is not very bright.

 

[bobpogoman]

oh i tought the lex//550 put the fuel cut at like 15-16 psi instead of 12..?

but really my fuel cut without any fcd is @ 20 psi?

 

[figgie]

oh i tought the lex//550 put the fuel cut at like 15-16 psi instead of 12..?

but really my fuel cut without any fcd is @ 20 psi?

Seen as high as 22 psi dependant on the weather (hot and dry).

 

[bobpogoman]

kk thanks for the info ima remove the the fcd asap :S

but can i get an explanation on why did the 60-1 do something with the fuel cud? lex/550 put the fuel cut @ 16 but how the 60-1 will put it @ 20?

thanks

 

[figgie]

kk thanks for the info ima remove the the fcd asap :S

but can i get an explanation on why did the 60-1 do something with the fuel cud? lex/550 put the fuel cut @ 16 but how the 60-1 will put it @ 20?

thanks

umm english please?

the turbo has nothing to do with FC. The Lex AFM is actually what made the fuel cut go up.

 

[bobpogoman]

ok but lex afm and 550 injectors increase air flow by approx. 25% that isnt read by the ecu, so 25% more boost before hitting fuel cut. so if the fuel cut stock is around 13 psi, with the maf+injectors its supposed to be around 16-16.5?

why would it be at 20-22 psi?

sorry for my english :S

 

[figgie]

ok but lex afm and 550 injectors increase air flow by approx. 25% that isnt read by the ecu, so 25% more boost before hitting fuel cut. so if the fuel cut stock is around 13 psi, with the maf+injectors its supposed to be around 16-16.5?

why would it be at 20-22 psi?

sorry for my english :S

no.

The AFM does not read pressure. It reads velocity (higher velocity = higher AFM Frequency) and with the IAT gets VOLUME.

That means that with a lex afm being 25% bigger. You are decreasing the velocity of the air read by a factor of X.

 

[bobpogoman]

ok thanks a lot, so i dont need the fcd.