Now that I have my new redback exhaust, i've noticed that everytime i drive the car there is water/condensation in the muffler tip. Is this normal?

One of the larger emissions from your engine is actually water vapour, so, yes...

It may not have have been as noticable with your old muffler

Standard type mufflers trap the water inside due to more baffling.Better flowing systems let more gas flow and have less restrictions so you see the water instead of having it trapped inside a muffler where it would slowly evaporate as the car warms up.

Yeah, normal.

Mine spits out a ****load of water on cold starts, and it definately isn't loosing water from the coolant sys. Only problem with mine is the water leaves nice black marks on the garage floor because it blows out all the unburnt fuel..... one of the joys of having a slightly rich "safe" turbo tune.

would rust or corrosion be a problem where the water sits?

Your larger bore exhaust increases engine efficiency by providing slower exhaust flow so less back pressure for the engine to work against. The flip side to slower flow the combusted gas stays longer in the exhaust pipes alowing them more time to cool and condensate. Cold engines run rich, hence also more condensate.

Your exhaust also works at a lower temp, so when your engine eventually heats up, the hot gasses takes longer to dry the condensate & you may reach your destination before it's all dryed up.

Water pools and collect in your muffler system as these also function as very efficient moisture traps, so eventually your muffler may be 1/2 submerged, restricting flow so your engine is back to working against the old back pressure even more, pushing water around baffles ....

Since CO2 is turns into carbonic acid on contact with water, so yes, it will rust a hole in your muffler.

To get around this, take longer trips or drive harder so the warmer gases will evaporate the collected moisture.:badgrin:

condensation...

hmm.....drive half couple of hours or round the block quite a number of times instead of driving 2 minutes straight to work to allow water to dry.....got it!

Lowest point of your muffler can have a hole for the water to drip out, won't hurt function.

Some yrs ago had some kids/scouts? "volunteer" fundraiser to wash the car,
they rested the running hose in the exhaust pipe whilst they soaped - car still started afterwards.
This is before water restrictions... lol

Some yrs ago had some kids/scouts? "volunteer" fundraiser to wash the car,
they rested the running hose in the exhaust pipe whilst they soaped - car still started afterwards.
This is before water restrictions... lol

I did this once to my Dads TM when I was about 6 or 7. From what I can remember I dont believe Dad was impressed :)