Read some posts that say change the air box and some that say it's efficient - do we have a dhal verdict? And if so which one? Thanks

 

Well, some of the aftermarket ones are pretty. I don't think any of the high hp applications do anything with the airbox except maybe change out to a BMC filter.
Champion makes the nicest looking aftermarket offering, IMO. But I think it's just engine bling

 

It depends on your mods, but even staying with the stock filter is good enough for modded vtg's. Esthetically the Werks1 airbox is a winner.

When mine was a evt700 I went from a stock filter to a BMC and noticed no difference in performance, slightly better sound when the turbos spool.


edit: I must type slow when women are around I did not see Ed's response when I first started typing...

 

Didn't I just say all that?
Has your car been out of the garage yet, Mike?

 

nope, same spot . I promise I will get seat time in January.

 

i have the AP one...certainly adds sound but cant tell you if it adds HP from the in the seat test

 

leave it alone

 

What about the turbo inlet ducting for the 997tt? Seems that there was some restriction in the 996tt ducting but I couldn't get an answer if it is the same restriction on the 997tt, anyone know?

 

I'm sure someone has quantified it, I just don't know how much But EVO does change out the inlet piping on the 'bigger' kits.

 

Just tried ordering these from EVO & there on back order for 8 weeks ,did you get these with your build Ed ? i also checked out Champions new CF intake pipes but like there Air box it's very pretty & very expensive at $3800 for a part you can't even see.

As far as the airbox goes it seems a lot of people including myself start with one (Agency) as it seems like an obvious 1st mod which maybe true with most cars but usually revert back to stock with BMC drop in filter which most tuners seem to recommend.There just seems to be no data to support any gains from these things except better sound, which is a good thing if thats what floats your boat

 

Nice bling for the engine bay, but not necessary for performance. Just drop in a BMC filter and call it a day.

 

Adam
Yeah, came with the kit.

 

Early on I had replaced the airbox with Fabspeed's air intake system. I loved the sounds I started hearing and didn't care if it didn't add anything.

However, when the last mod's were done we dyno'ed the car with the Fabspeed air intake and the stock airbox with BMC. I was shocked to discover that the stock airbox with BMC showed an increase of 7hp and about 15tq over the Fabspeed air intake.

I don't quite get those lovely sounds no more...

 

I do think that the aftermarket airboxes do affect power output. That is, I could swear that they slightly reduce low-end torque. At least that seems true for the EVOMS and Fabspeed. But they sound great and might make up for the low end loss a bit on the high end.
Definitely not a good use of money though. If I was doing it all over again, I'd swap the filter and move on.

 

yes or no ..... "no."