I have an Suzuki 1997 TL1000S,I have low pressure from my left exhaust pipe and have an misfire coming from left exhaust pipe. what can my problem(s) be?

High fuel pressure, stuck open injectors, bad fuel pressure regulator, pinched fuel return line .

run the fault codes as misfire can be from injectors , low fuel pressure and ignition problems
all temp gauges will show a rise on stopping an engine as there is still residual heat in the block and heads with no water circulation and cooling
the fire from the exhaust indicates an exhaust valve is not closing properly so a compression test would be in order to check for valve problems or hydraulic follower problems

Raw fuel from the tail pipe I would think maybe a bad TPS, fuel pressure regulator or injector. More than likely a bad regulator or throttle position sensor. Check your fuel pressure after the regulator at idle and wide open throttle. At an idle the pressure should be 20-30 psi lower than at wide open throttle. If your getting to much fuel pressure it can cause it to bog down and lose power due to extremely rich conditions.Will also have strong exhaust fumes.

you can go cheap and use a common bend extractor and regular exhaust system or you can get better with a mandrel bent extractor. Use performance muffler and pipes about 1/2 inch bigger than standard . Extra large looks good but will reduce performance and the cost will not be worth the effort. Exhaust systems to work have to be tuned to the engine . They have to be designed so that the shock wave from a power stroke enters the extractor at the exact moment that the previous shock wave that reached the end of the exhaust pipe has turned into a low pressure area and travels back to the extractor to arrive at the moment the exhaust valve is opening so allowing the compression gas from the power stroke to exit into a small low pressure area which in turn sucks out the used gas. That is why wrong size exhausts area a waste because the low pressure hits the exhaust valve and becomes a high pressure area as it rebounds back down the pipe and the exhaust dumps the power gas into a pressure area and not a vacuum. There are books on tuning exhaust systems that will explain it in more detail but you will find that bigger is not better . It just looks tuff and noisy and is next to useless when it comes to performance.

Problem with Suzuki Cars & Trucks P1129 02 Honda civic, map reading too high
honda or suzuki?
Manifold pressure sensor.l
your idle is too low? what is it cold and hot.
you have a gross air leak (vacuum) to the intake plenum
the sensors , almost never fail. it also wastes fuel like this.

Suspects will include air supply, compression, and exhaust.

After ruling out the obvious basics (fresh air filter, unobstructed air intake) pull the wire clip to the auto-choke and idle for a few seconds before dropping it in gear to check for a change in power.

*Have you pulled the rear wheels to check for a binding E-brake or broken springs in the drums?
What feels like a left-front drag could also be a rear dragging...

*Has it been smoking lately?

If it is just low now it may just be age and needs to be flushed and changed. If the problem is always there and you are not over filling the system cjheck your overflow. Also pressure test the system for leaks don't just look. Check it under pressure, leak may be very slow and will only show up under pressure. Also if all that checks fine watch for white smoke coming out of the tailpipe. That will indicate coolant in the exhaust.

Yes, If you have dual exhaust pipes coming from the engine, Look on the passenger side exhause pipe, and it will be the 1st sensor on the pipe coming out of the engine.

Sounds like you may need to inspect and replace your fuel line from front to rear. no other reason for your problem.

dont know what you mean about "a bent pipe coming off the headers" it sounds to me the exhaust gas cannot escape out of the system past the CAT, is there any exhaust gas coming out of tailpipe ? put your hand there to feel the pressure whilst someone else revs up, if little or no pressure just disconnect the back box (if possible) this is the coldest part of the system and all the exhaust water ends up there, baffles drop and block outlet. good luck