i recently purchased two 01 Virages TXI . I was told they were running last year last year. No batteries at time of time of purchase. but they would turn over. I found one needs at new computer board. The other started up ran great for 10 minutes hit 45 just while getting use to it. I picked up a passenger and went back out and it started to bog down didnt stall,, it kept an idle and putted around enough to get to shore. I went back out it ran fine. Then it did the same thing the machine will stay running but when it gets the throttle it just bogs down. Help me out . Thanks New gas, battery and oil??