Quote:
Originally Posted by Paul Workman
Just an opinion, but it seems to me that as long as modifications are limited to how many injectors are operating (in closed loop), i.e., no other mods are done except for porting, it seems logical that a prom with the appropriate tune should be able to operate two (instead of one) injectors and maintain the proper air/fuel ratio. Two injectors instead of one does not spell emissions failure; only the air/fuel mix would do that (all else being the same such as cam profile and timing, etc.).
But, this would be a question for Dom or one of the pro tuners out there. However, I'll be comfortable placing most of my "chips" on the square marked "won't affect emissions".
So, what do some of the tuner experts say? 
P. |
Paul,
You're on the right track. I have a WB on my car and motor idles and runs at 14.4 to 15.1. BLMs are between 124-131. With secondaries operating the pulsewidth for each set of injectors drops depending on where in the VE table you are. Essentially the aggregate pulsewidth for idle and part throttle cruise will be the same regardless if one or two injectors is (are) feeding the cylinder.
I wonder if it isn't better to have both injectors operating in terms of reliability?