I started testing the first 180hp prototype from ModShack TTuned. The goal is to make a plug 'n' play version similar to the 225hp Audi TT.

The ID of this prototype is 2.63" (67mm) which is a 28% increase over the stock housing of 2.36" (60mm).

After a few tests, it was decided a 4bar Fuel Rressure Regulator (FPR) needed to be installed.

After several days of testing, we decided this prototype was too much for the small K03 turbo. ModShack TTuned will be sending a second prototype soon for more testing.

28% increase over the stock housing of 2.36" (60mm).

After a few tests, it was decided a 4bar Fuel Rressure Regulator (FPR) needed to be installed.

After several days of testing, we decided this prototype was too much for the small K03 turbo. ModShack TTuned will be sending a second prototype soon for more testing.

The new prototype arrived on Dec 29, 2004. This unit is made from billet aluminum instead of stainless steel.

ID is 2.469" (63mm) and the outer diameter is 2.88" (73mm). Steve had to mill the turbo inlet side to accomodate the stock hose. Also, the adapter sleeve of the TTDA had to be removed. Final test shows the ID is too small. Idle is +0.2 and partial is +3.1.

Jan 31, 2005 - Updated ID arrived. ID is 2.51" (64mm). Short run and Partial is +0.1 and idle is 0.0.

Feb 8, 2005 - Final runs with this version. System settled in with 0.0 for Idle and -4.7 partial using block 032. Packed up housing and sent it back to ModShack TTuned for one final bore of 2.54" (65mm).

Feb 18, 2005 - Housing arrived from ModShack bored to 2.54" (65mm). Installed and reset a/f reading (block 032).

Feb 21, 2005 - Test looks like we're dialed in. Reading Block 032, Idle is 0.0 and Partial is -2.3.

Feb 23, 2005 - Block 032 now shows idle at +0.6 and partial throttle is -1.6.

Feb 26, 2005 - Final test shows idle is +1.1 and partial throttle is -1.6. Final product will be available very soon.

the turbo inlet side to accomodate the stock hose. Also, the adapter sleeve of the TTDA had to be removed. Final test shows the ID is too small. Idle is +0.2 and partial is +3.1.

Jan 31, 2005 - Updated ID arrived. ID is 2.51" (64mm). Short run and Partial is +0.1 and idle is 0.0.

Feb 8, 2005 - Final runs with this version. System settled in with 0.0 for Idle and -4.7 partial using block 032. Packed up housing and sent it back to ModShack TTuned for one final bore of 2.54" (65mm).

Feb 18, 2005 - Housing arrived from ModShack bored to 2.54" (65mm). Installed and reset a/f reading (block 032).

Feb 21, 2005 - Test looks like we're dialed in. Reading Block 032, Idle is 0.0 and Partial is -2.3.

Feb 23, 2005 - Block 032 now shows idle at +0.6 and partial throttle is -1.6.

Feb 26, 2005 - Final test shows idle is +1.1 and partial throttle is -1.6. Final product will be available very soon.

Modshack TTuned has a new little brother to the MoFo - 180 lil' MoFo.
It arrived today and it's better looking in person than the pictures. The housing is beautifully crafted from Billet Aluminum.

- Material: Billet Aluminum
- Length: 4.312" (110mm)
- ID: 2.55" (65mm)
- OD: 3.00" (76mm)
- OD turbo inlet: 2.62" (67mm)

Mar 08, 2005 - Production units are being made now. Pricing, due to the numerous labor ops, time needed, and tooling investment made will be $125 shipped, $180 with a 4 bar Fuel Pressure Regulator.

Mar 15, 2005 - After 3 days with the lil' MoFo installed and using block 032, the lil' guy has settled in with an amazing ...ZERO!!! Both idle and partial throttle. Perfect.

Mar 26, 2005 - Problems with MoFo. Air density a factor as block 002 readings show a 15% lower reading. Car stutters around 4000 RPMs. Replacing coil packs and plugs didn't correct the problem. Notified the Modshack.

Apr 1, 2005 - Shipped MoFo back for refit. Installed 3bar and stock housing. G/sec are back in line and no stuttering.

Aluminum.

- Material: Billet Aluminum
- Length: 4.312" (110mm)
- ID: 2.55" (65mm)
- OD: 3.00" (76mm)
- OD turbo inlet: 2.62" (67mm)

Mar 08, 2005 - Production units are being made now. Pricing, due to the numerous labor ops, time needed, and tooling investment made will be $125 shipped, $180 with a 4 bar Fuel Pressure Regulator.

Mar 15, 2005 - After 3 days with the lil' MoFo installed and using block 032, the lil' guy has settled in with an amazing ...ZERO!!! Both idle and partial throttle. Perfect.

Mar 26, 2005 - Problems with MoFo. Air density a factor as block 002 readings show a 15% lower reading. Car stutters around 4000 RPMs. Replacing coil packs and plugs didn't correct the problem. Notified the Modshack.

Apr 1, 2005 - Shipped MoFo back for refit. Installed 3bar and stock housing. G/sec are back in line and no stuttering.

2nd generation of lil' MoFo arrived. Due to air density problems causing surging and stutter at 4000+ RPMs, the ID has been modified.

- Material: Billet Aluminum
- Length: 4.312" (110mm)
- ID: 2.51" (64mm)
- OD: 3.00" (76mm)
- OD turbo inlet: 2.62" (67mm)

New features include:
- A tapered venturi on the air inlet side for enhance flow over the MAF
- Dovetailed cuts for better adhesion with the MAF housing

Apr. 9, 2005 - First run with V2: G/sec is up from 141 to 150. Turbo comes on very smooth. Partial throttle is -0.8 and idle is 0.0.

Apr 14, 2005 - Finally got a 2nd WOT run today. Logging block 032, idle is +0.8 and partial idle is -1.6. G/sec from block 002 reach 147 @ 6000.

Apr. 25, 2005 - After driving with V2, I have noticed the initial turbo spike has all but dissappeared. In 3rd through 5th gear, it has a smooth boost to 18 or 19 psi and stays there until 4500 when it starts to drop off. The car is really in it's element between 3000 and 4500rpms.

ADJUSTING THE MILEAGE CACULATOR
After installing the MoFo + 4Bar FPR, you will notice an increase in fuel mileage. This is an illusion as the mileage calculator takes its cues from the injector timing. The FPR is squirting MORE fuel for a shorter amount of time so this number will be off. To correct using a VAG-COM:

- From the main screen, under Select Control Module click 'Select'
- Click '17-Instruments'
- Under Advanced Functions, Click 'Adaptation - 10'
- Type 03 in the channel number field and click 'Read'. In the stored value, it should read '100'
- In the new value field, type '00110' and click test. 110 should appear in the Test Value field
- Click 'Save'. Click Ok to complete and click Done to exit

More info on the 180 and 225 MoFo can be found here: http://www.modshack.info/bamm.htm

- ID: 2.51" (64mm)
- OD: 3.00" (76mm)
- OD turbo inlet: 2.62" (67mm)

New features include:
- A tapered venturi on the air inlet side for enhance flow over the MAF
- Dovetailed cuts for better adhesion with the MAF housing

Apr. 9, 2005 - First run with V2: G/sec is up from 141 to 150. Turbo comes on very smooth. Partial throttle is -0.8 and idle is 0.0.

Apr 14, 2005 - Finally got a 2nd WOT run today. Logging block 032, idle is +0.8 and partial idle is -1.6. G/sec from block 002 reach 147 @ 6000.

Apr. 25, 2005 - After driving with V2, I have noticed the initial turbo spike has all but dissappeared. In 3rd through 5th gear, it has a smooth boost to 18 or 19 psi and stays there until 4500 when it starts to drop off. The car is really in it's element between 3000 and 4500rpms.

ADJUSTING THE MILEAGE CACULATOR
After installing the MoFo + 4Bar FPR, you will notice an increase in fuel mileage. This is an illusion as the mileage calculator takes its cues from the injector timing. The FPR is squirting MORE fuel for a shorter amount of time so this number will be off. To correct using a VAG-COM:

- From the main screen, under Select Control Module click 'Select'
- Click '17-Instruments'
- Under Advanced Functions, Click 'Adaptation - 10'
- Type 03 in the channel number field and click 'Read'. In the stored value, it should read '100'
- In the new value field, type '00110' and click test. 110 should appear in the Test Value field
- Click 'Save'. Click Ok to complete and click Done to exit

More info on the 180 and 225 MoFo can be found here: http://www.modshack.info/bamm.htm

Part #: 280-160-575
Purchased from: http://www.autohausaz.com/ and search for a 2001 Passat 20V.
or from the Modshack: http://public.fotki.com/ttschwing/gadgetts_and_stuff/

MoFo upgrade requirement. This takes around 15 minutes.

- Work on a cold engine as fuel is under pressure
- Remove gas in the bowel with towel before installing new FPR
- Install a tie wrap to hose when finished

MoFo upgrade requirement. This takes around 15 minutes.

- Work on a cold engine as fuel is under pressure
- Remove gas in the bowel with towel before installing new FPR
- Install a tie wrap to hose when finished