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Aaron Casey
Tinkerer
nsw
jzz30 gttl

Posts: 34
Reg: 08-2005

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Tuesday, November 29, 2005 - 09:23 pm, by:  Aaron Casey (Blownminiturbo) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

hi guys.. just wonderin if you are able to disconnect the fuel pump ecu and run straight 12v to pump?? or is it a bastard to get to work properly and screw with your fuel/ign maps??
Freeman Tang
TryHard
Vic
JZZ30 GT-TL

Posts: 137
Reg: 07-2005

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Tuesday, November 29, 2005 - 11:24 pm, by:  Freeman Tang (Cobra_man) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Bridge B+ and FP terminals in your diag port under the hood! It bypasses the FP and runs straight 12V.
Aaron Casey
Tinkerer
nsw
jzz30 gttl

Posts: 35
Reg: 08-2005

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Thursday, December 01, 2005 - 12:02 pm, by:  Aaron Casey (Blownminiturbo) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

sweet ill give it a go... anyone know what fuell pressure should be runnin at idle and at full load??? cause im got a malpassi and i dont know how much to turn it up, i have a 550hp pump and a bigger turbo system and i wanted to raise pressure to get more from injectors till i get bigger ones as on std boost im gettin 210kw at wheels and almost maxin them out!!! and i want to put it up to bout 14-15 psi. if i do raise the presure bout how much should i go and how much bigger will that make them flow?? if anyone knows id love to know!!! thanks
Craig Webber
TryHard
NSW
TT

Posts: 228
Reg: 07-2005

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Thursday, December 01, 2005 - 12:27 pm, by:  Craig Webber (Soarr) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Hi Aaron
I run 440,steel wheel turbo,15 psi, standed fuel pump ECU And have had 233kwrw.No need to f#*k around with the Ecu fuel pump.plenty of fuel to play around with.And mine an auto.just get it tuned on the dyno.
Chris Davey
TryHard
QLD
Corona

Posts: 133
Reg: 07-2005

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Thursday, December 01, 2005 - 04:27 pm, by:  Chris Davey (Chris_davey) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Is the malpassi a 1:1 FPR? You are wanting to increase base fuel pressure? IIRC the stock base pressure is around 40psi. I know of a guy who runs 60psi base pressure with apparently no problems. I wouldn’t recommend that much change. Try 5psi. And as Neil said, do it on the dyno.
Aaron Casey
Tinkerer
nsw
jzz30 gttl

Posts: 37
Reg: 08-2005

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Thursday, December 01, 2005 - 09:02 pm, by:  Aaron Casey (Blownminiturbo) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

ok so if standard is 40 ill prob run 45. just a little bit more nothin too serious. i have a air/fuel ratio gauge in car and also a 4 gas analyser at work so ill know if im runnin lean and ill just disconnect it. malpassi is the 1:1.7 type with pressure gauge.
Chris Davey
TryHard
QLD
Corona

Posts: 135
Reg: 07-2005

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Friday, December 02, 2005 - 07:52 am, by:  Chris Davey (Chris_davey) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

if you have a 1.7 then you probably won't need to change base pressure as it will be giving nearly double the normal additional amount of fuel per additional psi. Just make sure you do it knowing what the a/f's are.

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