I'm glad for you that the tuner is admitting to drive ability and still working with you. There are more then one way to skin a cat, since he has a shop and a dyno maybe he has a method of doing this completely wrong and backwards? I've been scratching my head to figure out how? Maybe he is doing something we don't know about? Still can't figure out what or why... He is also there and should be able to find a mechanical issue which we can not.
So far we have no proof of anything but a PE Rape tune. Newer OBDII systems can be PE Raped and still cold start and drive good. Most people would not know a good running vehicle as long as it ran and drove OK, then WOW, it's fast at WOT! Woo Hoo!
No you don't! It's not a fine tune issue, right now you don't have a tune to fine anything about. Please forgive me but I'm going to be blunt. What you care about does not matter! We are telling you things that do matter! If you understood, you would do them instead of saying it does not matter to you. It does matter to tune and how it runs.... then all the things would be fixed and the things you care about would be fixed.
If you pick and choose what you want to work on? Then that's all you'll do forever! When you get a few things the way you want? Then all the others fall apart again. You need to start at the beginning with how the bin is calibrated, then fuel tuning if you have a good spark table. Then all these little things fall in place.
Here's how and why! The ECM calculates everything based on what is calibrated into the bin file. If calibrated properly then it can work properly and you can adjust the fueling needs because you changed the engine with cam or..., in SD systems it's the VE table, in MAF systems it's the MAF table. Everything else is an adjustment off of that! If fuel and or calibrated settings are off? Well so is everything else.
First issue is you don't have Injector Vs battery offsets. Second you have varying voltage issues. Those 2 things make it impossible to run right all the time. Fuel pump pressure and delivery change with voltage. Injector flow changes with voltage. All injectors are different and have vastly different settings for offsets so they flow same amount of fuel if voltage is 10 or 15.
Cheating on one thing to make one thing right? Makes all the others wrong!
HTH!
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