1.6l Crossover tube removal.
 

Alright, so I got my mega squirt in yesterday, and I am going to try to start tuning this weekend.

I am removing the AFM, and was wondering if there is any proven downside to removing the crossover tube, and just running a piece of pipe off of the TB with a cone filter attached? Everything I have read on M.net says you loose some torque but I haven't seen any proof.

Should I just adapt a cone filter to fit on the end of the x-over? Its probably going to be this way for a few months until I get the rest of my turbo parts.

I guess this could have gone in Engine Performance

The stock crossover has a Helmholtz chamber built in (it's that big, nasty black box that makes it hard to get the tube off). This chamber supposedly addresses a flat spot at a certain RPM.

That said, the gains you will see from getting rid of the AFM will more than offset any loss from the Helmholtz chamber.

I say have at it. Simpler is better. It's good to breathe your air away from the exhaust system, although you will still be dealing with air heated by the radiator.

I'd buy a $6 coupler and $12 180* pipe from siliconeintakes.com and clamp your filter on the end of that pipe. Gets it away from the radiator and the header, putting it next to the intake manifold. As a benefit it gives you some pipe to drill/tap for your AIT sensor.

I run a 3 inch intake, no issues here.

Sounds good to me, getting rid of the tube it is.

I already have a bunch of silicone couplers from the FMIC I had when i had my greddy kit. Just need to find some pipe.

Thanks!