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UMW Stage 2 OVERBOOST

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Old 08-29-2007, 02:04 AM
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Jay993turbo
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Default UMW Stage 2 OVERBOOST

Well, I just finished installing Stage 2 from Kevin a few days ago. I have covered over 400 miles in the past 2 days to break-in the turbos and also to diagnose a small boost leak. I finally narrowed it down to a stripped intercooler bolt, which I fixed.

So, it was a cool 65 degrees tonight here in Jersey and I decided to take the car out for some full throttle runs. I was hitting peak boost at 1.4-1.5 bar!!! I hooked up two different boost gauges just to verify, at first I thought something was wrong. I shot an email to Kevin and sure enough the ecu was dialing in overboost due to perfect conditions. Or as he would say "the ecu was giving the green light."

This thing is friggin fast. This is honestly the best set of turbos and tuning I have had on any car. Thanks Kevin!


edit: Ecu dialed the boost back down to 1.2-1.3 bar the next day. Turned out my n75 valve was shot.

Last edited by Jay993turbo; 08-30-2007 at 07:03 PM.
Old 08-29-2007, 02:17 AM
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Holy Sheeeeet!!!

1.5bar - like 22psi?? Wow!

COngrats!

Simon.
Old 08-29-2007, 07:48 AM
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Condor Man
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Awesome Results,

Are you going to Dyno the car??
Old 08-29-2007, 09:23 AM
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Originally Posted by Jay993turbo
Well, I just finished installing Stage 2 from Kevin a few days ago. I have covered over 400 miles in the past 2 days to break-in the turbos and also to diagnose a small boost leak. I finally narrowed it down to a stripped intercooler bolt, which I fixed.

So, it was a cool 65 degrees tonight here in Jersey and I decided to take the car out for some full throttle runs. I was hitting peak boost at 1.4-1.5 bar!!! I hooked up two different boost gauges just to verify, at first I thought something was wrong. I shot an email to Kevin and sure enough the ecu was dialing in overboost due to perfect conditions. Or as he would say "the ecu was giving the green light."

This thing is friggin fast. This is honestly the best set of turbos and tuning I have had on any car. Thanks Kevin!
Congrats. Kevin is first class all the way and his turbos are second to none. My last setup was UMW stg2 on a 996TT and it was the best bang for the buck...period. I had lots of fun with those turbos and produced some 60-130 and 1/4mile times that were very strong. The only problem is when Kevin starts whispering in your ear...STG4...STG4...STG4. I couldnt resist and I consider myself a victim He made me do it.....
Old 08-29-2007, 10:56 AM
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Stop it! I can't even drive my car yet I feel I need the UMW 2 kit.
Old 08-29-2007, 11:40 AM
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Jay993turbo
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Thanks guys. I couldn't believe the numbers at first, so I had an electronic and an analog boost gauge running simultaneously and seperately just so I could verify. Initially I thought my boost gauge was wacked, but nope. I was getting consistant readings from both gauges all night long. It ran like a bat outta hell.

Kevin offered to let me borrow his driftbox, so 60-130 times are in the near future
Old 08-29-2007, 11:45 AM
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Originally Posted by Condor Man
Awesome Results,

Are you going to Dyno the car??
I do plan to dyno the car. Unfortunately, I did not dyno the car before the upgrade so I won't really have any before an after. I will post my results.
Old 08-29-2007, 05:37 PM
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stage 2 is the sh%t!!!!
Old 08-29-2007, 09:49 PM
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i had mine installed in june and since havnt had a day under 90 degrees here cant wait fro some 70 or 65 degree days but i fear i may have to wait a while for that green light
Old 08-30-2007, 03:00 AM
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is your ecu programming stock? or was it remapped by someone?
Old 08-30-2007, 04:59 AM
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Kevin it's my Stage 2 tuning package Stage 2 Z/C turbochargers, ECU and 130mm cats..
Old 08-30-2007, 05:55 AM
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Originally Posted by Kevin
Kevin it's my Stage 2 tuning package Stage 2 Z/C turbochargers, ECU and 130mm cats..
Kevin, 1.5 bar and no head sealing rings
Old 08-30-2007, 04:47 PM
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1.5 bars is extreme on a stock engine.

As the ECU adapts, the boost will settle down.
Old 08-30-2007, 04:55 PM
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Why does the programming allow the boost to hit that high. Seems like a bad thing waiting to happen on a stock bottom end right ?
Old 08-30-2007, 05:05 PM
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A tired/faulty N75 valve will not be able to allow enough control pressure to open the wastegate doors. If the gates aren't open long enough the boost will creap. The ECU will adapt.. Within a few miles Jay should see programmed boost levels. If these levels continue, a new frequency valve will be installed.


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