Does anyone have an injector offset table for SVO 30# injectors?
Does anyone have an injector offset table for SVO 30# injectors? I've searched all over and can't seem to find a table or anything to change mine for the new injectors. I'm way rich at idle after swapping injectors and I'm thinking it's because of the offset difference of the 30's.
Can anyone help me here?
Thanks,
Craig
Can anyone help me here?
Thanks,
Craig
I have the same injectors. Mutiply your IFR table by 110%. Your Ltrims should be close to 0 - -8 which is what you want.
Do the whole table, the numbers will increase to 'lean' it out...
Don't be surprised if your WOT A/F is off after the injector change....
Do the whole table, the numbers will increase to 'lean' it out...
Don't be surprised if your WOT A/F is off after the injector change....
I believe the offset is so close to stock that changing it will have little to no effect. My buddy has C5R injectors in his car and we messed with the offset and noticed no difference...I got the offset numbers directly from Bosch. I can't remember the tuner/member from last year that I was talking to about this...
Hmmm, I was hoping that was the reason I went so rich again after adding the injectors and new cam. It wasn't nearly as bad with the TR224. I'll try lowering the VE some more and see if that helps. The new cam doesn't have that much more overlap, but who knows.
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Launching!
Joined: Jan 2003
Posts: 269
Likes: 0
From: Northeast Baby!
Originally Posted by Nic00Z28M6
Don't bother changing the offset for ford 30# red tops.
Here is my current table with HPTuners:
4.60 4.62 4.65 4.69 4.71 4.74 4.76 4.79 4.83 4.84 4.88 4.90 4.93 4.95 4.98 5.02 5.03
Hope it helps.
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TECH Regular
Joined: Apr 2003
Posts: 413
Likes: 0
From: Atlanta, GA
Originally Posted by AgentOrange
Well SVO 30#'ers are 36#'ers on LS1s. Once installed I had a very unstable idle and the engine would really start to bog when at WOT. I made the proper offset and it made a world of difference so I'll have to strongly disagree with you. Otherwise your trying to mask issues if your injector offsets are not correct and you try and adjust other tables to lean out your engine.
Here is my current table with HPTuners:
4.60 4.62 4.65 4.69 4.71 4.74 4.76 4.79 4.83 4.84 4.88 4.90 4.93 4.95 4.98 5.02 5.03
Hope it helps.
Here is my current table with HPTuners:
4.60 4.62 4.65 4.69 4.71 4.74 4.76 4.79 4.83 4.84 4.88 4.90 4.93 4.95 4.98 5.02 5.03
Hope it helps.
What you posted is about inline with what I have seen as well. They supposedly flow about 38% over stock on the 99's.
Here is some LS1 Edit data that I found posted on another thread. I am not sure what model it was from but it does show the constants to be alot more than 110% more than stock.
4.24 4.26 4.28 4.32 4.34 4.37 4.39 4.42 4.45 4.46 4.50 4.52 4.55 4.57 4.60 4.63 4.64
BTW, How did you derive your numbers did you just scale them by 1.38 or 1.40?
Launching!
Joined: Jan 2003
Posts: 269
Likes: 0
From: Northeast Baby!
Originally Posted by monodax
What you posted is about inline with what I have seen as well. They supposedly flow about 38% over stock on the 99's.
Here is some LS1 Edit data that I found posted on another thread. I am not sure what model it was from but it does show the constants to be alot more than 110% more than stock.
4.24 4.26 4.28 4.32 4.34 4.37 4.39 4.42 4.45 4.46 4.50 4.52 4.55 4.57 4.60 4.63 4.64
BTW, How did you derive your numbers did you just scale them by 1.38 or 1.40?
Here is some LS1 Edit data that I found posted on another thread. I am not sure what model it was from but it does show the constants to be alot more than 110% more than stock.
4.24 4.26 4.28 4.32 4.34 4.37 4.39 4.42 4.45 4.46 4.50 4.52 4.55 4.57 4.60 4.63 4.64
BTW, How did you derive your numbers did you just scale them by 1.38 or 1.40?
Either way a 27% increase in fuel delivery is too much to ignore....thus is why I never listen to one individual on the internet, always get a group consensis.
Launching!
Joined: Jan 2003
Posts: 269
Likes: 0
From: Northeast Baby!
Oh to calculate the difference is:
New Inj Value = ( (Current Rail Pressure)^2 / (New Inj. Rated Rail Press)^2 ) x New Injector Factory Rating
% Change = new/old or shall we say (New Inj. lb/hr) / (Old Inj. lb/hr)
ie - New Inj Value For SVO's @ LS1 psi = [(LS1 psi)^2 / (SVO rated psi)^2 ] x SVO Rated Lb/hr.
gives us
New Inj Value For SVO's @ LS1 psi = [(58 psi)^2 / (39.15 psi)^2 ] x 30 Lb/hr
New Inj Value For SVO's @ LS1 psi = 36.51 lb/hr
% Change = (36.51 lb/hr) / (28.8 lb/hr) = 126.8 % difference
Please correct me if anything here is wrong guys so we don't have a bunch of people using bunk equations.
New Inj Value = ( (Current Rail Pressure)^2 / (New Inj. Rated Rail Press)^2 ) x New Injector Factory Rating
% Change = new/old or shall we say (New Inj. lb/hr) / (Old Inj. lb/hr)
ie - New Inj Value For SVO's @ LS1 psi = [(LS1 psi)^2 / (SVO rated psi)^2 ] x SVO Rated Lb/hr.
gives us
New Inj Value For SVO's @ LS1 psi = [(58 psi)^2 / (39.15 psi)^2 ] x 30 Lb/hr
New Inj Value For SVO's @ LS1 psi = 36.51 lb/hr
% Change = (36.51 lb/hr) / (28.8 lb/hr) = 126.8 % difference
Please correct me if anything here is wrong guys so we don't have a bunch of people using bunk equations.
TECH Regular
Joined: Apr 2003
Posts: 413
Likes: 0
From: Atlanta, GA
Originally Posted by AgentOrange
Oh to calculate the difference is:
New Inj Value = ( (Current Rail Pressure)^2 / (New Inj. Rated Rail Press)^2 ) x New Injector Factory Rating
% Change = new/old or shall we say (New Inj. lb/hr) / (Old Inj. lb/hr)
ie - New Inj Value For SVO's @ LS1 psi = [(LS1 psi)^2 / (SVO rated psi)^2 ] x SVO Rated Lb/hr.
gives us
New Inj Value For SVO's @ LS1 psi = [(58 psi)^2 / (39.15 psi)^2 ] x 30 Lb/hr
New Inj Value For SVO's @ LS1 psi = 36.51 lb/hr
% Change = (36.51 lb/hr) / (28.8 lb/hr) = 126.8 % difference
Please correct me if anything here is wrong guys so we don't have a bunch of people using bunk equations.
New Inj Value = ( (Current Rail Pressure)^2 / (New Inj. Rated Rail Press)^2 ) x New Injector Factory Rating
% Change = new/old or shall we say (New Inj. lb/hr) / (Old Inj. lb/hr)
ie - New Inj Value For SVO's @ LS1 psi = [(LS1 psi)^2 / (SVO rated psi)^2 ] x SVO Rated Lb/hr.
gives us
New Inj Value For SVO's @ LS1 psi = [(58 psi)^2 / (39.15 psi)^2 ] x 30 Lb/hr
New Inj Value For SVO's @ LS1 psi = 36.51 lb/hr
% Change = (36.51 lb/hr) / (28.8 lb/hr) = 126.8 % difference
Please correct me if anything here is wrong guys so we don't have a bunch of people using bunk equations.
The equation you posted supports the information that I found also. If you input my 99 injector size of 26.6lb/hr / 36.51lb/hr you get a 138% (Rounded Up) difference which is a 38% increase.
Originally Posted by AgentOrange
Well SVO 30#'ers are 36#'ers on LS1s. Once installed I had a very unstable idle and the engine would really start to bog when at WOT. I made the proper offset and it made a world of difference so I'll have to strongly disagree with you. Otherwise your trying to mask issues if your injector offsets are not correct and you try and adjust other tables to lean out your engine.
Here is my current table with HPTuners:
4.60 4.62 4.65 4.69 4.71 4.74 4.76 4.79 4.83 4.84 4.88 4.90 4.93 4.95 4.98 5.02 5.03
Hope it helps.
Here is my current table with HPTuners:
4.60 4.62 4.65 4.69 4.71 4.74 4.76 4.79 4.83 4.84 4.88 4.90 4.93 4.95 4.98 5.02 5.03
Hope it helps.
That is the injector flow rate table correct? I multiplied my entire IFR table by 127% when I installed the injectors to compensate for the flow rate increase. My Ltrims are slightly on the negative side. No problems here.
However, I'm looking for the injector OFFSETS to compensate for the slower reaction time of the BOSCH injectors versus the faster Delphi injectors.
I'm thinking I'm just going to leave them alone since no one apparently is messing with these.
Originally Posted by AgentOrange
Well SVO 30#'ers are 36#'ers on LS1s. Once installed I had a very unstable idle and the engine would really start to bog when at WOT. I made the proper offset and it made a world of difference so I'll have to strongly disagree with you. Otherwise your trying to mask issues if your injector offsets are not correct and you try and adjust other tables to lean out your engine.
Originally Posted by AgentOrange
I made the proper offset and it made a world of difference so I'll have to strongly disagree with you.
Launching!
Joined: Jan 2003
Posts: 269
Likes: 0
From: Northeast Baby!
Originally Posted by Nic00Z28M6
I said no need to change injector offset, not injector flow rate. Big difference. Changing injector flow rate is a given.
Here look at this. It helped mine and is back to normal now.
https://ls1tech.com/forums/pcm-diagnostics-tuning/195527-tuning-svo-30-injectors.html
https://ls1tech.com/forums/pcm-diagnostics-tuning/195527-tuning-svo-30-injectors.html
