My engine died... not from an IMS failure

[KRAM36]

With just the air intake upgrade I did, my Boxster it is currently at a point to where I can't drive it as fast as it could go due to the tires not being able to give enough grip.

Any 3.2 owner wanting more grunt should look into a full air intake upgrade, really wakes the engine up and sounds so much better. It's not just top end either, it's completely through the RPM range.

[Pdwight]

I would love to see actual Dyno numbers on that, I did a K&N on my E36 a few years ago and could not tell any difference except for the sound. Tell us more please.

[KRAM36]

Originally Posted by Pdwight

I would love to see actual Dyno numbers on that, I did a K&N on my E36 a few years ago and could not tell any difference except for the sound. Tell us more please.

I stared out with just thinking of the 987 air box upgrade.

http://986forum.com/forums/performance-technical-chat/32074-987-v-986-air-box.html

Then decided to go with the rest of the intake system.

http://986forum.com/forums/general-discussions/31693-maf-throttle-body-diameter.html

If you want to use the larger 987 MAF housing you have to get a tune or the car will run too lean. So I molded a 986 Maf Housing into the 987 MAF housing so I could just clip it onto the 987 air box like normal and used the honeycomb air straightener so the MAF sensor gets a more accurate reading. This also gives me the option to clip in a 987 MAF housing, run larger piping and get a tune down the road. I don't plan on doing that until I have done my exhaust upgrades.

987 air box with my 986 MAF housing clipped on.



The 986 MAF housing molded into the 987 MAF housing.



Honeycomb air straightener.

[Pdwight]

I know we are headed off in a new direction on this thread....but this always seems to happen. For a tune can you do it with a Durametric ? , or could you disconnect the battery and then let the car re-learn the new larger throttle body ?

[KRAM36]

Originally Posted by Pdwight

I know we are headed off in a new direction on this thread....but this always seems to happen. For a tune can you do it with a Durametric ? , or could you disconnect the battery and then let the car re-learn the new larger throttle body ?

You can not do a tune with a Durametric. The car can not compensate for the larger 987 MAF housing, no matter what without a tune. The car can and will adapt to the lager TB.

[Pdwight]

Tune options ?

[KRAM36]

Originally Posted by Pdwight

Tune options ?

Some say push a tune from a 996 of the same year as your car into it or do a dyno tune. The 2004 Special Edition came with the 987 air box with the larger MAF housing, so I might be able to push a tune from one of those and be good since mine is a 2003 and has the same engine.

However I'm going to go with a dyno tune when the time comes.

I believe I read our cars can adapt up to a 20% increase in air volume before running lean. The MAF house size is programed into the car's DME, so if you change to a larger MAF house the MAF sensor can not correctly determine the amount of air going into the engine. I think it will even throw a CEL when using the 987 MAF house.