[ImpactBlue]

it's possible that it's leaking :O since it's a full 3" exhaust connected to the stock dp, you might need to play with a combination of gaskets or try to find an adapter or just throw on the aftermarket DP and stage 2 tune

it'll get a bit louder once you switch out the stock DP too, but yeah... i would recommend having a heat shield of some kind, cut the stock one to fit or buy another one like the cobb or cusco

[wenzhang60608]

i am thinking about getting the catless bellmouth downpipe. accessport dont recommand aftermarket intake tho。。。。i wanna keep my intake.... how much horsepower would i get going to stage 2?

[ImpactBlue]

from their website: http://www.cobbtuning.com/images_products/3158.jpg shows +39.7 whp over stock

there's likely some variation due to exact part setups / location of the car etc, but that sounds about right

i've never actually ran their stage 2, went straight for opensource protune when i installed the DP, but A LOT of other people here have so maybe they'll chime in

there should be a lot of old threads out there with people's impressions as well

[wenzhang60608]

hmm opensource protune???

[ImpactBlue]

Originally Posted by wenzhang60608

hmm opensource protune???

basically when a professional tunes your car with opensource software on a computer (ECUFlash / RomRaider)

what the accessport comes with are off the shelf maps, which are universal maps that are meant to run on any compatible car, the protune is a custom map made for your specific car and can be through the accessport, opensource software, utec, and a bunch of others.

for simplicity of use though, the accessport is probably the best platform for most people