I knew that, I was just testing you.

Thanks for catching my error though.

 

In a perfect world yes. It will be close I'll grant you. But for some reason it is not linear as you would expect. PE vs RPM will need to be adjusted at a minimum. And for some reason it seems to run rich at idle when increasing fuel pressure and only adjusting the fuel injector constant. If the BLMs are compensating then it really isn't a factor except for open loop during engine warmup.

I've been doing alot of tuning on accel dfi gen 7 lately. There are so many tables that tunercat doesn't even address controlling fueling. For instance I can change the timing of the fuel injectors and it makes the cam in my car idle and drive like stock. Cam Surge? Gone.

 

""And for some reason it seems to run rich at idle when increasing fuel pressure and only adjusting the fuel injector constant. ""

This I have found to be true.

""If the BLMs are compensating then it really isn't a factor except for open loop during engine warmup.""

This I have found not to be true. In my case even with the BLMs at 126 at idle and light cruise it is still very rich. I thought if the BLMs were happy then everything was OK until I put a wideband on it and found out the BLMs were lying to me.

Sorry for the hijack.

 

There is alot more than you would think going on in the runners where the fuel injectors are spraying. Even with the smallest of cams there is reversion. If too much fuel is sprayed it puddles and doesn't burn properly and if not enough is sprayed it does not have any torque due to being lean. The other problem is that with aftermarket cams the injector closing event needs to be timed to the new valve timing. As far as I know this is not an option in tunercat.

The Blm's are not giving you an accurate picture of a single cylinder. For instance with an lt1 intake the front two cylinders need more fuel at idle and the rear two cylinders need less. This can be adjusted in tunercat.

I don't really have a good answer for rich at idle problem. I would just say to street tune any time you get a chance and try only one thing at a time until you can figure out what is working and whats not. Also after you change a parameter give the car time to relearn its fuel curves before you decide if the change helped or not.

I run my car on a wideband closed loop fueling at 14.0 AFR part throttle and have found it to be more torquey and driveable at the slightly richer AFR. I also adjusted the fuel injector timing so reversion plays less of a factor.