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nrgy · 05-22-2009, 03:26 AM

Just wanted to clear up a couple points about the Carbonio airbox. First off it is not a carbon copy of the factory box, it is in fact noticeably larger than the stock box which is visibly seen by the overhanging sides. Secondly, while the MSRP is $1995 many vendors are offering it for less. I was able to pick mine up brand new for $1500 including shipping.

Also, in regards to power...everyone always claims 10-15hp it seems with airbox/filter mods. I know Carbonio claims this, as does Renntech with their box. But most seem to be in agreement that if there are any gains to be had, it won't be shown on a dyno since their is not sufficient enough airflow.

Also, one could argue these gains are achieved through the filters and NOT the airbox itself. People have claimed in the past that simply removing the charcoal filters has shown an improvement upwards of 20 hp, add high flow filters on top of that and I think that's where most, if any of the gains are coming from. As evident by the following link: AMG63 R&D #1 (Free 18 RWHP)

So in the end, it really does come down to cosmetics for me. If it helps to increase hp then I'll take it. But in either case I wouldn't really call $300/hp a bargain? And for $3k, I would have liked to see a front engine cover.

I don't want to sound like I'm bashing RENNtech or their airbox because I'm not. I do believe they can produce real power for the C63 as evident from their 1/4 mile times. I also really do like this airbox despite the lack of a front engine cover, and haven't ruled it out completely. If it were closer to $2k though, I'd probably wouldn't hesitate to snatch one up.

05-22-2009, 03:26 AM	#18
nrgy Super Member Join Date: Mar 2003 Location: Pacific NW Posts: 509 Drives: C63, A4	Just wanted to clear up a couple points about the Carbonio airbox. First off it is not a carbon copy of the factory box, it is in fact noticeably larger than the stock box which is visibly seen by the overhanging sides. Secondly, while the MSRP is $1995 many vendors are offering it for less. I was able to pick mine up brand new for $1500 including shipping. Also, in regards to power...everyone always claims 10-15hp it seems with airbox/filter mods. I know Carbonio claims this, as does Renntech with their box. But most seem to be in agreement that if there are any gains to be had, it won't be shown on a dyno since their is not sufficient enough airflow. Also, one could argue these gains are achieved through the filters and NOT the airbox itself. People have claimed in the past that simply removing the charcoal filters has shown an improvement upwards of 20 hp, add high flow filters on top of that and I think that's where most, if any of the gains are coming from. As evident by the following link: AMG63 R&D #1 (Free 18 RWHP) So in the end, it really does come down to cosmetics for me. If it helps to increase hp then I'll take it. But in either case I wouldn't really call $300/hp a bargain? And for $3k, I would have liked to see a front engine cover. I don't want to sound like I'm bashing RENNtech or their airbox because I'm not. I do believe they can produce real power for the C63 as evident from their 1/4 mile times. I also really do like this airbox despite the lack of a front engine cover, and haven't ruled it out completely. If it were closer to $2k though, I'd probably wouldn't hesitate to snatch one up. __________________ C63 V1 3.864, 19" Multi Spokes, 35% F1 Tint, KW V3 Coilovers, Front Strut Brace, Carbon Fiber Airbox, MHP V3 ECU/TCU, Long Tube Headers, Mids and High Flow Cats Last edited by nrgy; 05-22-2009 at 03:33 AM.