LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Can someone verify the Injector settings for me

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Old May 7, 2004 | 09:57 AM
  #1  
dreamer1q's Avatar
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From: Nashville, TN
Can someone verify the Injector settings for me

I have a set of 30# SVO's and I want to verify what the rating is for my car. It is the last thing I have to do to finish off my tune. Anyone?

Q
Old May 7, 2004 | 10:15 AM
  #2  
xxsaint69x's Avatar
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From: Peachtree City, GA
i would like to know as well. I just put 30lb in LT1 edit....dont know if its right or not thou
Old May 7, 2004 | 10:25 AM
  #3  
dreamer1q's Avatar
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When I bought these off a member he sent me a paper telling me what he set it to, unfortunatly my wife threw it out in a fit of zealous house cleaning

Q
Old May 7, 2004 | 10:39 AM
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I believe the injector constant is supposed to be around 31 but like most people I had to adjust it some after I scanned the car so I ended up with 33 in the end.

Then you have the injector offsets to deal with. Below is what I have in tunercat... LT1 edit will need different values.

381.5
351.0
305.2
274.7
244.1
213.6
198.4
167.8
152.6
137.3
122.1
106.8
106.8
91.6
76.3
76.3
61.0
61.0
61.0
45.8
45.8
45.8
45.8
30.5
30.5
Old May 7, 2004 | 10:40 AM
  #5  
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From: Grand Rapids, MI
Hey Q,

If you calculate 30 * sqrt(44/39) you get 31.86 for fuel pressure at 44. If pressure is right on 43.5 then you get 31.68 so somewhere in between is probably good.

I would not mess with anything but the injector constant.
Old May 7, 2004 | 10:41 AM
  #6  
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Thanks Brad, you are my hero
Old May 7, 2004 | 10:49 AM
  #7  
383Z4ME's Avatar
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I'm telling you guys that messing with the injector offsets by voltage does no noticeable good. I know this from extensive personal experience. Only change the constant. Stock regulator is supposed to be set to 43.5 so 31.7 for the injector constant is a close match. If you want to lean the mixture for cruising then you can play with going higher at your own risk. On the other hand if pressure is higher then the contant needs to be raised.
Old May 7, 2004 | 01:02 PM
  #8  
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Originally posted by dreamer1q
Thanks Brad, you are my hero
haha I try

I really cant say much about those injector offsets. Originally I had them set as stock and after noticing a hesitation off idle I decided to go ahead and find some offsets for those SVOs. Truth be told... they didnt help at all. If I had the time and money to have all those injectors match flowed then I would have b/c it seems like the redtop SVOs arent that consistent from all the personal accounts from other board members.
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