I have a 108 BLM reading and can not get it 128. I have a adj. regulator but have it adj all the way out and still can not get a 128 BLM.the injectors are the right ones. What is my problem and how can I get a 128 BLM, my gas MPG are at 14 need to fix this.

 

your car is running rich. what's your fuel pressure? is it a maf or sd?

 

And, how much of and what kind of software and/or tuning stuff have you got ?

 

You have the right injectors? What flow rating are they?
Is the ECM programmed for the correct size injectors?
How old is your O2 sensor?
What is your actual fuel pressure reading?

 

a blm of 120-136 is usually ok, but being at 108, you should look into replaceing the O2 sensor, plugs, wires, cap, rotor... simple stuff shoud fix your problem. oh and dont just adjust your regulator all the way out, set it to 43-48 and then go from there. if you still have problems after you have checked these things, get back to us. its always best to check the simple things first. good luck.

 

thanks for the info I'll try the plugs first and go from their. The o2 is new ( bosh 4 wire ) I dont think its bad.

 

A BLM of 108 is the limit, stock. It means that the O2 sensor is not seeing any unburnt O2 in the exhaust stream, and is removing fuel to compensate. It *could* mean you're actually running lean !
If you have a miss, bad plugs or such, you'd have excess O2 in the exhaust, and the BLM would go the other way. Remember, the stock narrow band sensor measures O2, not mixture !
The more likely scenario for bad parts ( you have not said what tuning software you're using, whether you can or have burned a chip and such ) is a poisoned sensor.
If you've done ANYTHING and used non-O2 safe silicone anywhere, the sensor is probably toast. They'll last about ten seconds in the presence of silicone. Maybe less.
They're pretty easy to check with a propane torch and a voltmeter on the bench.