Hello all. I have an 04 A4 1.8t, GIACX+ chip and the higher flow injectors. I see a few companies (034, etc) have high flow (maybe ported) intake manifolds. Is there any hp benefit to a lightly modded engine like mine? I will be putting my testpipe back on soon as well. They are not too expensive, but wondered if it would be a better investment than a intake like carbonio. Any insight and EXPERIENCE would be appreciate.

 

I doubt you'll see too much gain. The OEM manifold seems to flow fine even when running turbos such as a GT28RS or a 2871r. The K03 on your car is very unlikely to even approach the flow limits of the OEM manifold.

 

this pretty much in a nut shell and it's about 400 bucks


if you want more power get a bigger turbo