987 Airbox-Worth it?

[rfuerst911sc]

The dyno graphs I have seen including my own the average increase just for the air box is 5 hp .

[BYprodriver]

Originally Posted by rfuerst911sc

The dyno graphs I have seen including my own the average increase just for the air box is 5 hp .

I assume that was for your stock engine ??

[rfuerst911sc]

Have seen the 5 hp change on stock and modified engines.

[dguy535]

Originally Posted by rfuerst911sc

Have seen the 5 hp change on stock and modified engines.

What MAF setup are these running? My concern is this turns into a never ending rabbit hole for tuning and what not.

If I swap the TB and plenum, but maintain the 986 AB, my understanding is I CAN use the existing mapping and maintain drivability with increased response. I don’t want to get into wide band O2 systems and what not to tune around a new problem with increased MAF diameter that I create.

[maytag]

Originally Posted by dguy535

I don’t want to get into wide band O2 systems and what not to tune around a new problem with increased MAF diameter that I create.

I contacted VRTuning (VividRacing) and they sent me a MAP file and the hardware to flash it, based on the mods I told them about. They did a pretty good job. It might be just a LITTLE bit rich, but I can attribute some of that to my 3500' elevation. haha

plan on $800-ish for the hardware and flash-file.

[blue62]

Originally Posted by rfuerst911sc

The dyno graphs I have seen including my own the average increase just for the air box is 5 hp .

If you have access to dyno graphs could you tell us where in the RPM range the 5 hp gain is?
More importantly what are the torque gains? and where?
Are these gains in the low to mid RPM range? So they would be useable on the street?
Or more on the high end of RPM so more applicable to the track?
Thanks in advance

[rfuerst911sc]

Originally Posted by blue62

If you have access to dyno graphs could you tell us where in the RPM range the 5 hp gain is?
More importantly what are the torque gains? and where?
Are these gains in the low to mid RPM range? So they would be useable on the street?
Or more on the high end of RPM so more applicable to the track?
Thanks in advance

Sorry those graphs were over a year ago . I don't remember the specifics but I know the guy's at Jake Raby's shop and they have told me many times they see an honest 5 hp increase from the air box swap .