These are the bulbs I'm currently running in my turn signals. They work fine, have great output etc. but my one complaint is that there is a delay in the "switchback" feature. Is anyone aware of a 3157 switchback LED that has an instant switchback?

 

I just got the ACME 3157 from The Retrofit Source for $25 shipped and they look EXACTLY like those and also have the delay. Even when I first turn them on they dont get white for a full 2 seconds and then in between amber blinking and clear running there is a full second or more of nothing. But I really like them otherwise.

 

I got mine from Vleds.com and they have the delay too. I'm not sure if there are bulbs that don't have a delay. If you look at switchbacks on some OEM vehicles they have a delay too

 

I've been told the V3 Tritons from vleds are the best ones to get with minimal delay. I'll end up going with these when they are back in stock.