Intake Air Temperatures

Modshack

No...these are cut to work within the ECU self adjusting parameters which has proven pretty flexible.. Not radical at all..

The reason you needed a new MAF on your TT was because the old one was failing. All of a sudden you were asking for 40 more HP and the tired MAF couldn't supply enough of a signal to keep the fueling correct. They are particularly fragile on VW/Audi cars. On those I actually go up 12-15% in size, but up the fuel pressure to account for the lower MAF signal. Read the link in the quote above..

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ZforMe

Anyone know the ID of the Cobb silicon tubes? Is it bigger than the corrugated? I saw that Modshack used custom 2.75" which is bigger than the 2.5' stockers, but I haven't seen any dimensions of the Cobb tubes.

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13.369 @ 102.73 Bone Stock. BERK HFC's installed 5/14/09 @ 1490miles, 13.212 @ 106.15. Cobb Post MAF Hoses installed 3/20/10 @ 5,043miles, future: FI exhaust with 18" res and s/s cans.

Modshack

Actually I just got my hands on a set this morning (Zpitrates)...... The MAF tubes I cut above had an OD of 2.75" and the Cobb's fit them snugly as they do the stock parts (below). The TB is also 2.75, so 2.75 it is!

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Steal my car! (SOLD)...Now Porsche Cayman S
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ZforMe

Awesome, Thanks!

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13.369 @ 102.73 Bone Stock. BERK HFC's installed 5/14/09 @ 1490miles, 13.212 @ 106.15. Cobb Post MAF Hoses installed 3/20/10 @ 5,043miles, future: FI exhaust with 18" res and s/s cans.

ZforMe

Modshack,

Any updates on this project using the Cobb post MAF hoses and your custom made MAF? Will you be retaining the stock air boxes or using cone filters with the insulated tubes?

I'd be interested in your MAF, but not sure I really want to cut my stock boxes. We'll see.

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13.369 @ 102.73 Bone Stock. BERK HFC's installed 5/14/09 @ 1490miles, 13.212 @ 106.15. Cobb Post MAF Hoses installed 3/20/10 @ 5,043miles, future: FI exhaust with 18" res and s/s cans.

Modshack

Actually we are doing the install on Sunday. Airboxes are color matched to PG and done, New tube diameter tested on my car. The whole thing should bolt together nicely. We are essentially duplicating my custom CAI system here:
CAI experimental.....> album | Ttschwing | Fotki.com
It will be a little while til we install the Fang vents which are really an integral part of this. So far, the new Tube diameters seem to be working great on my car.. I'm sure John will post his impressions when done....He's still in the break-in phase though!....

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Steal my car! (SOLD)...Now Porsche Cayman S
Oil Cooler DIY: Here!

Zsteve

What is it that the larger MAF tube does for you? Tricks the ECU into dumping more fuel?

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2010 LS3 C6 Silver coupe corvette

Modshack

Actually less. The car runs a bit rich to start with..

__________________

Steal my car! (SOLD)...Now Porsche Cayman S
Oil Cooler DIY: Here!