I don't know I guess tighter windings and all that sort of things I'm sure the electronics people come along in a minute and say why it can't be It's like accel yellow coils in the old days. I guess It looks like they're made by this company that makes these supposedly higher end coils they're all over the web the last few months anyway I can't think of the name of the company when I do I'll post it up here they make coils for the aftermarket across the board different colors all sorts of different mess but I don't think it's just the coloring but if it is that's fine instead of four of these things was a whopping 80 bucks or something seem to run fine My MFD says I'm getting two more miles to the gallon all of a sudden.
My theory is the quality is judged by how heavy they are... I replaced some failed aftermarket ones in a 2006 and car had less than 100K miles. Made no sense.... But then when I pulled them out and they were super light and I realized the set of ones I paid $32 for: 4Pcs UF316 Ignition Coils Fits Toyota Yaris Prius Prius C Echo Scion xA xB 1.5L | eBay were way heavier despite being the cheapest ones I could find on ebay. Got me thinking that using the heaviest coils is probably a good measure for quality.
If you look at the chassis of the red ones next to the stock ones that I took out which I didn't take a picture of there's a little bit different in shape diameter what have you so I don't know if they can put more copper fatter windings more aluminum wire painted copper color who the hell knows But they seem to run very well of course my old coils that I'm taking out of 250,000 mi on them of snapping however many volts across a spark plug so they may just be old and wearing from age. TRQ does have a reasonably decent at this point brand name they don't seem like they're trying to take a dump on everybody have you several sets of their wheel bearings and have been nothing but very satisfied with the results so there's always that $89 versus 249 a pop or something Is it pretty substantial amount.
