Tuning update
Thread Starter
Safety Car
Joined: Dec 2002
Posts: 3,655
Likes: 24
From: Charleston SC
Tuning update
Today I installed the 42's to see if there was aproblem with my 36# injectors. The reason I was checking is I had to set my injector constant to 31.5 to get the BLMs in line with the 36s. Well the 42s wher just about the same I had to set the constant to 35.5 to get the BLMs in the 128 range (120-135). I don't compleatly understand why this is but I have very little experience but am picking up a lot of good info along the way. I had plan to disable the MAF sensor today and play with the VE tables in speed density mode but the weather was not up to it, it is raining like crazy out there. The only thing I noticed with the instalation of the 42's is it runs a little lean at idle (137-137) but as soon as the RPMs get to 1100 I get 128/128 and it seems to be prety consistant other then that so i think i will just live with it. I am trying to decide if i want to stick the 36's back in or not but realy don't see the need as both sets of injectors seem to work just fine. (BTW anyone want to by a set of 36 or 42s? mabey that would help me make a decision 
.
.
Thread Starter
Safety Car
Joined: Dec 2002
Posts: 3,655
Likes: 24
From: Charleston SC
Originally Posted by MaxLean
Don't forget to take into accout the fuel pressure used for the flow rating given. Your pressure may be different and likely accounts for the injector constant discrepency. 
