As many of you know, GDI engines are more widespread than ever, and with them, regardless of how well maintained they are, they always develop Carbon Buildup on the Intake Valves and Runners, specially TurboCharged engines, and with mileage as low as 30k.
Before having a GM Truck, I used to have a VW Jetta and rolled with many friends with GDI TFSI engines, so I know this problem first hand.
The most obvious sign of Carbon Buildup is decreased performance and fuel economy, along with difficulty to star the engine or even knock under load.
What I have been doing to avoid this problem early on in my cars is to bypass the PCV gasses to an atmospheric catch can or most recently to a Crankcase Scavenging System directed to my Exhaust, so the is absolutely no source of carbon going inside of my intake, but I understand this may not be a viable solution for everyone, so I would like to present another alternative: chemical prevention.
Every 6k miles, as part of my oil Changing interval, I also replace the Air Intake Filter and chemically clean my intake using fuel injector cleaner additives directly into my intake, like if I was using seafoam.
Most Fuel injector cleaners have high concentrations of PolyEtherAmines of PEAs for short, which is a carbon detergent, the exact same active ingredient on products like CRC GDI Intake Valve Cleaner, but all fuel injector cleaners have one or other detergent for this matter.
Below, you will find a video explaining how to apply this method to your engine and another video explaining how I came to the conclusion that any Fuel Injector cleaner will do the trick:
New to this whole forum thing so let's just get down to business. I have a 2015 Silverado 1500 with the L83 5.3L currently I have an Edelbrock E-Force 2300 stage 1 supercharger and Borla atak cat back exhaust. I have been researching all over and for the right camshaft size for my application (1/4 mile/street) and haven't really gotten anywhere. what Camshafts are performing well in these SIDI engines with superchargers? I'm aware that I would need stronger valves, springs, and most likely rods, I've heard great things from Texas speed and Comp Cams but I am not partial to either. once I do the Camswap I will also be looking into a smaller pulley and new injectors which I will also need feedback for. I'm currently running the SCT tune that came with the kit from Edelbrock but I'm sure it will not be adequate once I put in the new cams, smaller pulley, and injectors. ANY INPUT WILL HELP!!!!
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