Modified GT 1.4 TSI airbox

**Greg Roles** · 12-07-2008, 05:34 PM

Nice writeup mate, and interesting to see the TDI and TSI airboxes are quite different. I started out with a similar stock airbox modding route, until I ended up with a Modshack pod housing. The biggest restriction in the inlet is the MAF grid ( 22% ) and the 90 degree bend in the lid, the grid is there to smooth out the airflow after the 90 degree lid bend according to Modshack. What I can say is once you get a straight pod setup and can then remove the grid, the car runs fine, and it's noticably more responsive. Still, nice to see you hacking up a new car all the same, nice to have company!

**POLARBEAR666** · 12-07-2008, 05:40 PM

If I removed the MAF screen would it just reduce the super rich A/F a tad or would the Motronic compensate using the oxygen sensors?

I have descreened MAF's before on LS1 v8's and it was great for reducing a super rich factory tune with no side effects.

For me its not about hacking up a factory car its about going "Thats not optimal by any stretch of imagination and therefore must be cut/burnt/chopped till its optimal"

**Paul_OH** · 21-07-2008, 08:21 PM

Nice write-up. I'm looking to do something similar but haven't been able to remove the airbox. It seems the clip/attachment closest to the LH headlight is the issue with a 'mushroom' head type ficture. Any hints on how to release this?

Thanks in advance

**POLARBEAR666** · 21-07-2008, 11:13 PM

1. Unscrew all screws in airbox lid to pull it upwards and expose air filter,
2. unscrew the front air intake with star shaped alum key and pull it off.
3. pull the bottom half of airbox upwards at each point where a pole with knob comes up through a rubber grommet in the airbox. Apply force upwards and you cant go wrong. There are 3 grommets around 3 poles.

By the way my cold air intake is showing me air intake temps on the Scangauge 2 of 23'c when the outside temp is like 18'c.

**Revo Kev** · 21-08-2008, 09:14 PM

Nice work, will have to get something done with our tsi... not touched any hardware yet other than fitting the factory revised DV and obviously uprating the software! Is yours a 140 or 170bhp version?!

**POLARBEAR666** · 22-08-2008, 12:26 AM

It is 170hp but I am sure it has more.

Car feels about 140kw

Sometimes it feels like a 6 second car especially with the revs up on bends or winding roads.

I have shed about 40kg from the car and another 20kg will go when I change to light wheels eventually.

Spare wheel is 15 or 20kg cant remember. Plus I have removed all the tools and underbonnet insulation and other rubber bits etc. Rear exhaust was 13kg from factory but replaced with 5kg replacement pipe.

**TSi2NV** · 26-08-2008, 12:34 PM

Hey Polorbear666 did this give you any performance enhancement?

**POLARBEAR666** · 26-08-2008, 06:00 PM

Well my temps on my scangauge went down from 10-12 degrees c above the outside temp to about 3-5 degrees.

Theres gotta be performance in that change.

It feels perkier. My butt dyno would definitely give it better throttle response and possibly 5-10hp but mainly its the response you feel. SHARP.