I need to get my car retuned as it is. I'm wanting to swap to pump gas. However until I am capable of getting to a dyno, will it at least start and run on pump gas? What would the I'll effects be of driving it?

 

Based on what you used to tune your vehicle with, your fueling table will be delivering about 25-35% more fuel.
It may start or it may flood on pump gas - ill effects reads like a shopping list.

 

In order to switch fuels, you need to completely drain the tank and refill with the new fuel AT THE DYNO. No driving beforehand with a fuel you aren't tuned with.

What engine management are you using? It may be as simple as dialing back the overall fuel compensation 25% or 30% to make a basemap.

 

Im.running hondata s300. It's got 1600cc injectors. My tank is empty.

 

Go into your fuel injector parameters and subtract 30% from overall trim and it should be enough to make it run on 93. You can tweak it until the AFR is correct. This is just until you can get to a tuner though, I wouldn't drive in boost unless you know how to tune it yourself.

 

I think I'm to concerned how much of issue it will cause. I'll wait to tune. I could plug it in and mess with it, but I'm not very educated in tuning or how the program works itself. Just wish there was a close dyno and tuner to my location. Seems like I'll have to trailer to Atlanta.

 

not only is fueling very different, but ideal ignition timing is too. If it's tuned WELL for e85 and you put pump gas in it, subtracting fuel will only partially correct the AFR, it will not completely correct it. And if you don't pull timing out too, it'll blow sky high, especially if you get into boost.
My advice, pull the car onto a trailer, drain the gas tank as much as possible, trailer the car to a gas station, fill the tank with whatever fuel you want to run it on, then trailer it to a reputable tuner for a quality tune