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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Dyno for Procede with UR Downpipes (Before & After)



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      09-03-2007, 10:06 PM   #23
jayjay
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Originally Posted by 533ogetnom View Post
you guys are crazy to install something like this and not watch your boost and AFRs
+1

I predict if the the boost levels were checked you would see major boost creep/spikes on that car.
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      01-24-2008, 04:52 PM   #24
DrewKo
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Originally Posted by dre335 View Post

Subjectively, throttle response has improved noticeably and lag reduced even further.

Strangely, it didn't feel that strong right after the install with very slight hesitation when pulling right at the beginning. However, the power and smoothness gradually improved and seemed to feel quicker and quicker over the last 1-2days.

My thoughts exactly after installing my catted DPs from UR. I am also using 1.47. I first thought there was really no gain, like immediately after the install when I took the car for a quick spin. But, then it was noticeable and I was satisfied that the purchase was worth it.

Your dyno above is same day?
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      01-24-2008, 09:03 PM   #25
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Quote:
Originally Posted by DrewKo View Post
My thoughts exactly after installing my catted DPs from UR. I am also using 1.47. I first thought there was really no gain, like immediately after the install when I took the car for a quick spin. But, then it was noticeable and I was satisfied that the purchase was worth it.

Your dyno above is same day?
The dynos were done 2 days apart.. which is the amount of time needed to install the aftermarket downpipes. I had an issue with the repositioning of one of the O2 sensors as my car is RHD.
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      01-27-2008, 05:52 AM   #26
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Procede V4 , Catless DPs, Forge FMIC, Injen Intake, VK Oilcooler, Hartge Quads Exhaust, Modded CDV, Synapse BOV Kit, BMW Performance 335i SSK Kit, P3 vent boost gauge

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