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Just back from GreedSpeed with NS exhaust and 190 turbo.

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Old Aug 29, 2003 | 08:43 PM
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Default Just back from GreedSpeed with NS exhaust and 190 turbo.

First, big thanks to Anthony for doing all the installation and tweaking (~3 hours to get the downpipe out - ouch!). It was a 9 AM to 8 PM job!

The NS (Neuspeed) exhaust has a nice tone but not as deep as I expected. It's not obnoxiously loud. Haven't picked up the drone yet which I was really concerned with as the CVT basically lives between 2K and 3K RPM. I'll have to drive more with the windows down to make more comparisons.

I was running with dual IC's before and a Neuspeed CVT chip. Turned out I was running with the ECU correcting fuel trim by -2 (it was seeing too rich a mixture). The 190 HP turbo is a Jetta/GTI variant with 20-30% higher output from a bigger compressor section but same outlet section. This means I have plenty of room for automatic fuel trim without going with the higher flow injectors (partly because the Jetta/GTI runs a 3 Bar pressure regulator versus the A4's 4 Bar). Plus, I don't have to spend a week or two getting the fuel tables tweaked so I keep the same chip for now. I'll have to monitor the trim to see if I have to go back for an upgrade.

The car is even more responsive from dead stop than before. Once at speed it's a much lighter pressure on the throttle pedal to keep going. Putting the pedal down is a very noticeable increase in acceleration over the chip alone. It maintains strong acceleration past 5K RPM rather than dying out at ~4K-4.5K (before the turbo upgrade). The CHP was working TO and Agoura Hills so I took it easy. I'll know more once I'm in a safe area and can open it up.

Overall I just needed the turbo, gaskets, studs, bolts, an air pump tube and the associated right angle rubber connector plus, of course, the dual IC kit. Well, that and someone with Anthony's expertise to put it all together.

This is what the 1.8T should have been in the first place.

<img src="http://pictureposter.audiworld.com/20982/a4190turbo.jpg">
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Old Aug 29, 2003 | 09:30 PM
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didnt have to upgrade ecu? damn, i might have to do that... what was ur final cost?
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Old Aug 29, 2003 | 10:03 PM
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So far the NS CVT chip is compensating. I'll know more after a few days.
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Old Aug 29, 2003 | 10:17 PM
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let me know, imight end up doing it soon so i could take it up to dyno on the 13th...
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Old Aug 29, 2003 | 10:19 PM
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wont this be bad for the CVT transmission? since it cant handle much torque?
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Old Aug 29, 2003 | 11:19 PM
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Default Questions:

Why was it seeing a too rich mixture in the beginning, or was this just how NS programs their chips?

And I was wondering if you could explain this in greater detail?

"The 190 HP turbo is a Jetta/GTI variant with 20-30% higher output from a bigger compressor section but same outlet section. This means I have plenty of room for automatic fuel trim without going with the higher flow injectors (partly because the Jetta/GTI runs a 3 Bar pressure regulator versus the A4's 4 Bar). "

Thanks
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Old Aug 29, 2003 | 11:34 PM
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Default No, the design is to limit the torque to within CVT specifications.

The turbo is not a full K04 and by using the stock injectors you're unlikely to go past ~229 ft-lbs. Besides, the CVT will shut off the gas to the injectors if the limit is exceeded. Considering Audi leaves a 20-30% margin of safety, damage is unlikely.
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Old Aug 29, 2003 | 11:41 PM
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Default The second IC does introduce some additional air flow restriction. This would cause...

...a lean condition. The higher flowing turbo overcomes this and provides additional boost. The stock turbo is said to be unable to sustain the full boost the engine is capable of handling. That's not the case here. More air through the MAF and over the oxygen sensors will be compensated with more fuel when needed. The beauty is the engine remains an efficient, fuel saving 1.8 liter four until the turbo gets the wake up call.

The quoted paragraph already provides sufficient detail. I'll know more as the engine is monitored over the next several days.
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Old Aug 29, 2003 | 11:43 PM
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Default Contact Martyn at vagparts.com. I'm filling him in on...

...the parts really needed. You'll need to get the dual IC setup also through Greedspeed.

What dyno? I've really got to do that also.
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Old Aug 30, 2003 | 07:20 AM
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Default question

I just got the Neuspeed exhaust installed on my car last week at Greedspeed. I love the exhaust. However, it doesn't fit well. The left tip sticks out significantly more and has more of a gap. How does yours firt. Anthony told me that's just how they are.
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