Walbro 400s failed on me tonight after 1500 miles. Received them in November 2012. Had to get the car towed home. That was stressful in itself worrying about the exhaust getting scratched lol! The guy did an awesome job though. Already looking at alternative pumps (AEM 50-1200). Considering Walbro's refusal to warranty their own product and claiming owner error I'd rather skip their product line all together. If they stood by their product I'd feel better about the situation. Many thought the 400s were E85 compatible until early 2013 when they suddenly came out claiming they are not compatible. They need to own up to what's going on with the 400 / 405s.