After every performance enhancement, it’s always nice to be able to quantify what gains have actually been made.

Before starting this project, our customer came to us asking if 350-awhp (all-wheel horsepower) was obtainable on pump gas. With these types of requests we have to take a conservative approach and let the customer that, yes, those number are theoretically possible, but they're not numbers that can be guaranteed - every car is different, even in stock mode, and those differences often get amplified after modifications take place.

A couple weeks after picking up the car from us, our customer took his TT and put it on a Dynojet 4-wheel dynamometer. See below why all of us are so pleased with the results.

Relayed from our customer:

Everyone ready for some long awaited dyno numbers?????!!!

OUT of the BOX:

98 degree ambient temperature, 93-octane @ 25-psi, no timing adjustments - just the Eurodyne 630 file not touched after leaving 1552.

Keep in mind these are AWHP numbers, not crankshaft estimates:

365-awhp

318 lb-ft torque

All good things have to come to an end.

This story ended with our customer happily taking back the reins to his much quicker performing TT. When we finally called to say those magic words, “It’s done,� our customer wasted no time in crossing the state.

As satisfied as we were with the end result, nothing is better than the “first ride� with the customer after the keys are handed back over. The big grin on our owner's face was all we needed to end this chapter on a high note.

While we've given this TT a major overhaul while here, we know there are at least several more chapters to add to this TT's story. We very much hope they include us in some capacity.

Today's word is fab-ri-ca-tion.

From the intake to the downpipe to the rest of the exhaust and all the way to the tips, we've been busy fabbing up a bunch of aluminum and stainless steel tubing.

The GT3076 is a pretty big turbo - big enough to present clearance issues when used on the quattro version of the TT. Bascially, there's very little room between the exhaust side of the turbo and and the quattro's rear propshaft. Adding to the degree of difficulty is the fact that the turbo exhaust outlet is situated perpendicular to where the downpipe needs to go. We tried a few configurations and finally came up with a downpipe design that clears nicely and with no restriction penalties.

After the downpipe is straight 3" stainless steel piping that ends in a Magnaflow muffler with dual outlets. We're still not sure what style tips we'll be using.

On the intake side we used aluminum tubing with the goal of minimizing the length between the turbo, intercooler and throttle body, while still allowing for a functional upper stress bar. Speaking of intercoolers, we're still waiting on ours and won't be able to complete this job without it. It should arrive soon, though, so in the mean time we're trying to button up everything else.