GD, thanks for the follow up!

Nice things you are doing to these 3.0's, really appreciate you sharing them with us!

Hi guys. Has anyone put a cone filter and housed it inside the existing air box?

I did this on an previous car and was wondering if it's a viable solution to stop sucking in engine heat with the usual cone filter set ups.

I would remove the cone funnel inside the box and replace it with a 90degree elbow silicone hose. Attach the cone to the end of that and cut a hole in the box and feed a cold air feed from one of the front grilles.


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Unfortunately, it is unlikely the result will be anything measurable other than different sound. Be sure the mod does not decrease the volume of air getting to the engine.. FYI--The Dinan cold air system has no ducting to the grill. If improved performance is the goal I would spend time/money on lower restriction exhaust.

AGREED^^

Yup. I was toying around with the idea as I just need to source a cone filter (already have most of the other bits)



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Increasing performance is expensive. My minimal value equation is 1hp per $100 dollars spent. The reason I mentioned modify the exhaust is that on a stock engine the exhaust is always restricting air out. And, exhaust modifications tend to generate a very good value equation.

An engine is a big air pump. Air in, Air out. More air in may need changes to get more air out. Without doing so the mod performance increase can be compromised, even eliminated.

I would call Dinan and talk to them about what you can expect out of their tune, throttle body, transmission softwar and air filter. The package originally included low restriction exhaust. I highly recommend the transmission software even if you don't do anything else. The exhaust is no longer offered but you can make modifications to reduce back pressure. https://www.dinancars.com/products/?...id=1091#page=1

Dinan products are very well designed and thoroughly tested. The stage 3 package resulted in HP at 236 and TQ of 220. TQ gets you going an HP keeps you going. Because the X5 is so heavy Torque gains are most important.They printed the curve. HP gain started at about 3500 rpms and went to 6500 rpm redline. TQ gain started at 2000 rpms, reached max gain at 3000 rpms and doesn't really fall off much the rest of the curve. That's a great curve. Dinan performance documentation is conservative and extremely accurately measured. The reason I am a Dinan fan is you know what the value equation will be. It's a documented package. With a variety of aftermarket mods, even if someone has gone the same path before you and has dyno results, dynos and the many variables associated impact the measurement so much you really won't know your route was a good value equation.