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Fuel control module.

Grunna

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Hi all,
I have a 2003 VY series 1
LS1 6 speed ute....
Just did cam and valvetrain, bolt ons already there. This is destined as a burnout vehicle only, not road reg. Tuner has done his thing, BUT, and afew other tuners have come accross the same thing......
He can increase fuel over different rev ranges, but cannot from 5200 to limiter.....has anyone bypassed the fuel control module or did something else to rectify this...series 2 and VZ were different....any help?
 

07GTS

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LS1 uses a mechanical fuel pressure reg, if u cant add fuel ur either out of injector or pump or maf has hit limit or are u mafless? what is fuel pressure? and injector duty cycle ?
 

Grunna

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Cheers for reply...yes its mafless....
I was only told fuel pressure is good, but not given a number......
Also told the injectors will be fine without going bigger with the setup i got. I do have a fuel pressure gauge at work which i will see if same fittings and bring home to test numbers.
Thanks
 

07GTS

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fuel pressure should be 58psi
 

Grunna

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Thanks...i will test.
It was fine with stock cam with bolt ons....now we need more fuel and theres a problem somewhere
 

07GTS

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shouldn't be any limits in the tune fuel wise, unless something real odd was done i guess, id be checking all mechanical stuff first just encase
 

Grunna

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Thanks.....might have to look into another pump for starters......
Cheers
 

Grunna

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sorted...it was in the tune....hiding in a different spot

cheers all
 
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