Is a upgraded turbo manifold with a turbo back exahust with the straight pipe a good way to go? Need some input.

Thanks

 

you are freeing up power and spooling faster so of course it isn't. You might overspin your turbo! I advise you to port and coat your manifold instead of shelling out money for an aftermarket one.

 

Stock, cast log style manifolds are fairly good for stock turbo and most importantly, very durable units!! Aftermarket, welded tubular style manifolds can provide performance gains, but somewhat susceptible to cracking. If you decide to pursue on aftermaket units, make sure you do some researches so that you get good (effective and durable) ones. Just my token of advice.

 

+1