91 vette
Thread Starter
Burning Brakes
Joined: Jun 2003
Posts: 949
Likes: 0
From: smithtown ny
91 vette
is it normal when the car is in open loop to run rich?????when it goes into closed loop it goes from rich to lean i was told thats normal?? i installed 24# injectors and the blms is going 108 in closed loop it's at 128 in open loop is it true if i drive the car the ecm has to relearn and the blms will correct itself??
Race Director
Joined: Mar 1999
Posts: 12,586
Likes: 237
From: Bartlett Illinois
Re: 91 vette (6spd)
is it normal when the car is in open loop to run rich?????when it goes into closed loop it goes from rich to lean i was told thats normal?? i installed 24# injectors and the blms is going 108 in closed loop it's at 128 in open loop is it true if i drive the car the ecm has to relearn and the blms will correct itself??
Team Owner
Joined: Mar 2000
Posts: 83,381
Likes: 87
From: Boston, MA
Re: 91 vette (6spd)
Well you installed injectors larger than what the car came with so the ECM has no choice but to try pulling some fuel out hence the 108 BLMs. What manufactuer are the injectors? If they're Ford SVOs then they are more like what a GM 26# injector would be like.
Team Owner
Joined: Mar 2000
Posts: 83,381
Likes: 87
From: Boston, MA
Re: 91 vette (6spd)
The larger injectors are honestly overkill unless you've heavily modified the car for way more horsepower. You could install a new chip with the injector contant modified to let it know what size injectors installed or install an adustable fuel pressure regulator (AFPR) to pull some fuel out across the entire band.
Thread Starter
Burning Brakes
Joined: Jun 2003
Posts: 949
Likes: 0
From: smithtown ny
Re: 91 vette (scorp508)
i did adjust my fuel regulator it's still saying 108 i droped it down to 36 with the line off are 22# injectors the size a 91 came with if so do you or know of anyone selling them????
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Safety Car
Joined: May 1999
Posts: 3,651
Likes: 5
From: Atlantis
Cruise-In I Veteran
Re: 91 vette (6spd)
Your 91 came with 22 lb. injectors.
I installed a set of the light blue 24 lb. SVO injectors about a month ago.
Mine ran a little rich before reprogramming the EPROM.
BLMS were around 110..... it ran great.
With reprogramming they are around 126 to 130
Can't tell it runs any better.....
I bought the Ford injectors because I wasn't interested in the (sex) involved with GM or Accel injectors.
I installed a set of the light blue 24 lb. SVO injectors about a month ago.
Mine ran a little rich before reprogramming the EPROM.
BLMS were around 110..... it ran great.
With reprogramming they are around 126 to 130
Can't tell it runs any better.....
I bought the Ford injectors because I wasn't interested in the (sex) involved with GM or Accel injectors.