I did some posts asking for help in the engine / fuel system thread for help in my 2005 Innova G diesel. The issue is low power. I already took it to a diesel shop (not a Toyota dealer) to have it diagnosed with their scanner and the tests they did didn't give anything conclusive as to what is causing low power in my vehicle. They even installed a known within spec test fuel pump just to see if it is my fuel pump that is causing the low power, buti na lang my pump wasn't the problem.

Kanina ko lang naalala na earlier this year (around March ata), I had a small accident of backing into a ramp which hit my exhaust muffler. May konting tama yung exhaust tip, but after that incident, I noticed a rattling sound underneath everytime I started the engine and everytime naka idle.

I took it to an exhaust muffler shop (neighborhood - not really sure if they're the best or they are the experts)... and the guy who looked at it suggested to change a portion of the system to a "flexible hose type" to connect 2 parts...

I had my doubts on that but I went on with it anyway since at that time ala rin ako gaano alam about intake, manifolds, headers, etc... after the guy cut a portion of the pipe, he then welded the flexible hose to reconnect the whole system. At this point, nawala na yung ingay...

Now, I am wondering that maybe, this is related to the low power I am experiencing right now? What should I have to do to double check that this isn't causing the low power? Can you guys recommend a good exhaust system shop?