So I've recently installed a JLT intake and Bama 93 octane race tune on my 2012 GT. It worked fine for a couple weeks or so, I even drove it from South Georgia up to Virginia with no problems. Eventually I started noticing when I was driving to work first thing in the morning, my check engine light would flash for about 10 seconds and the acceleration would get pretty sluggish while it was flashing. After it stopped flashing, the car was fine and it wouldn't come on for the rest of the ride. After a couple mornings of this, the engine light stayed on, so naturally I used my SCT tuner to check the DTCs. I had P0300, P0301, and P0303. All of these are misfire codes. I worked with Bama tuning and tried several of their troubleshooting suggestions. Everything on the intake was tight and secured, the filter was located far enough away from the "T" in the JLT logo on the intake tube, I tried different tunes and everything. Nothing was solving the problem, and I really didn't like the idea of my engine misfiring EVERY DAY. I know that can cause some pretty serious internal damage. So I just tried returning it to stock, and sure enough, I haven't had any issues since. Don't think I'm talking trash about BAMA tuning or JLT, because I'm not, they both make great products that add noticeable horsepower. Troubleshooting a car over the phone is no easy task, so keep that in mind.
My theory is that it's the cold air temps in the morning that were causing my misfires. I'm not really sure what temps the intake/tuner were designed to work with, but I only had these issues after it started getting really cold where I live (Between 15 and 30 degrees Fahrenheit). And it only happened after a cold start. Once the engine/engine bay gets hot, I don't have any misfires.
My dad told me about when he was younger, he and his buddies would wrap an ice pack around the carburetor of their engines in order to cool the air entering the engine and thus making more power. But if the temperature outside were to suddenly drop, the engines wouldn't even run with the ice packs on them. I didn't get a lot of details about that, nor do I know much about carbed engines. But the concept sounds somewhat similar to me.
So, for now I'm going to leave the intake and tune off of the car, but you can bet when it warms up again, I'm gonna give it another shot! Lucky for me I'll be moving to Florida soon and won't have to worry about this bull lol.
Feel free to share your input or experiences.
My theory is that it's the cold air temps in the morning that were causing my misfires. I'm not really sure what temps the intake/tuner were designed to work with, but I only had these issues after it started getting really cold where I live (Between 15 and 30 degrees Fahrenheit). And it only happened after a cold start. Once the engine/engine bay gets hot, I don't have any misfires.
My dad told me about when he was younger, he and his buddies would wrap an ice pack around the carburetor of their engines in order to cool the air entering the engine and thus making more power. But if the temperature outside were to suddenly drop, the engines wouldn't even run with the ice packs on them. I didn't get a lot of details about that, nor do I know much about carbed engines. But the concept sounds somewhat similar to me.
So, for now I'm going to leave the intake and tune off of the car, but you can bet when it warms up again, I'm gonna give it another shot! Lucky for me I'll be moving to Florida soon and won't have to worry about this bull lol.
Feel free to share your input or experiences.
