30# SVO injectors
#1
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iv been running around on a base tune for a while now and am getting ready to go get my car retuned. i have the new style SVO red top injectors. there was something someone told me about them to make sure i told my tuner but i forgot what it was. something about the operation pressure i think?
#2
TECH Senior Member
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iv been running around on a base tune for a while now and am getting ready to go get my car retuned. i have the new style SVO red top injectors. there was something someone told me about them to make sure i told my tuner but i forgot what it was. something about the operation pressure i think?
EDIT: Now that I think about it, the LS1 usually run at a high fuel pressure than LT1's so the LT1's might in fact also run on a 3 bar system like SVO injectors were intended to. But I would do some research to be sure.
Last edited by ss.slp.ls1; 01-14-2009 at 01:55 PM.
#5
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well i tested the fuel pressure at wot and it stayed at 40 psi then slowly dropped to 30 psi at 6300-6500. this was with the hose off the regulator. i replaced the pump and it fixed it for like a day. then i put on a hotwire kit, fixed it for another day, new pump regulator, injectors, filter. the pump is an airtex tho. i might just call up warrenty and pay a couple more bucks for the delphi.
#6
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well i tested the fuel pressure at wot and it stayed at 40 psi then slowly dropped to 30 psi at 6300-6500. this was with the hose off the regulator. i replaced the pump and it fixed it for like a day. then i put on a hotwire kit, fixed it for another day, new pump regulator, injectors, filter. the pump is an airtex tho. i might just call up warrenty and pay a couple more bucks for the delphi.
I don't know if 30psi is enough of a drop to cause a stumble or not.
I would check out everything to be sure.
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#10
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SVOs are rated at 43.5 just like lt1s. Back in like 02 we all thought they were rated at 39, but after multiple people flow benched them they found them to flow the rated #s at right around 43psi.
Also, they noticed that even though they perform better at low pulsewidth, high rpm use, the injector to injector variation was slightly higher then standard rochester type LT1 injectors.
Also, they noticed that even though they perform better at low pulsewidth, high rpm use, the injector to injector variation was slightly higher then standard rochester type LT1 injectors.