TST Monitors
Does the flow thru 507 work good, or do they take air really slow? I have the 507 that you remove on the truck but they sent the wrong ones for the fiver.
Forum Discussion
If you're using a low flow system like a 12V air pump you might not notice much difference, but if you're using a high-pressure/high flow system you'll definitely be able to see/hear a huge difference.
