can i use my stock catback with my turbo setup im shootin for 500hp with 3mm headgasket el manifold ect. i have a invidia test pipe will i be able to hit 500 with my stock exhaust?
please if someone could have a def. answer to this cause now im nervous cause i dont wana upgrade my exhaust i like the sleeper look
ive heard of people getting dynod with stock exhaust and its like hitting a brick wall at 7000 rpms and it gets me nervous now what?

DO I NEED A AFTERMARKET MAP SENSOR WITH MY AEM EMS 1052? such as a aem 3.5 bar or a gm 3 bar

 

help please

 

It's going to kill your performance. Go with a 3". No point in spending all that $$$$$ on a turbo kit and not reap full benefits over a few hundred dollars.

 

The stock exhaust is gonna choke the hell out of a 500hp motor.

Get a custom exhaust and have the stock tips welded on.

 

at least get a 70 mm exhaust.
There is no such thing as a 500 HP turbo motor with a stock exhaust (Unless you can put one of those valves that you can push a button and it opens goes strait pipe)

 

If you want an exhaust that looks like stock for a turbo get a 3" dual from Ultimate Racing. And yes you will need to upgrade.

 

The more power you are trying to make the bigger the restriction becomes. If you want the sleeper look go with a dual setup with stock looking mufflers and stock tips. If you are catted/resonated it should not be too loud.

The 3 inch dual from UR, just needs the mufflers painted black:

 

The UR exhaust (or one similar in appearance) would be perfect for the sleeper look

 

bump

 

a map sensor is needed if you are going to boost over 10lbs which in your case for 500hp you certainly will.