Boost is back...and a leson learned :-)
11-02-2005, 04:41 PM
#1
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Boost is back...and a leson learned :-)
Yep, boost is back after replacing the n75, as many suggested in my earlier post. However, I believe my low boost condition was due to the fact the stg 3 ECU had not adapted completely.
Why do I say this? Well, soon after my boost was back I unplugged my stg 3 ECU and plugged my stg 2+ (I did not start the car, just turned ON the ignition switch). After connecting back my stg 3 ECU...YOU GUESSED IT!!! back to 15-16psi boost. Only this time I decided to wait a while before checking on things...and sure enough after driving 30-40 miles my boost was back to 18-19psi.
I had no idea it would take so long for this ECU to adapt, 30-40 miles is a lot compared to my stg 2+. Oh well, just another leson learned ;-)
Anyway, here's some graphs of my new found boost:
<img src="http://pictureposter.audiworld.com/70994/stg_3_boost_oem_n75-2.jpg">
<img src="http://pictureposter.audiworld.com/70994/stg_3_boost_oem_n75.jpg">
<img src="http://pictureposter.audiworld.com/70994/stg_3_boost_oem_n75-1.jpg"><ul><li><a href="https://forums.audiworld.com/s4/msgs/2152515.phtml">my boost problems</a></li></ul>
Why do I say this? Well, soon after my boost was back I unplugged my stg 3 ECU and plugged my stg 2+ (I did not start the car, just turned ON the ignition switch). After connecting back my stg 3 ECU...YOU GUESSED IT!!! back to 15-16psi boost. Only this time I decided to wait a while before checking on things...and sure enough after driving 30-40 miles my boost was back to 18-19psi.
I had no idea it would take so long for this ECU to adapt, 30-40 miles is a lot compared to my stg 2+. Oh well, just another leson learned ;-)
Anyway, here's some graphs of my new found boost:
<img src="http://pictureposter.audiworld.com/70994/stg_3_boost_oem_n75-2.jpg">
<img src="http://pictureposter.audiworld.com/70994/stg_3_boost_oem_n75.jpg">
<img src="http://pictureposter.audiworld.com/70994/stg_3_boost_oem_n75-1.jpg"><ul><li><a href="https://forums.audiworld.com/s4/msgs/2152515.phtml">my boost problems</a></li></ul>
11-03-2005, 05:06 AM
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Congrats man!!!! I'm happy for ya.... I can't wait to see/try your car...BTW,
being the only Stage 3 in Puerto Rico, I guess we should test APR III vs. GIAC 3-,huh? What do you say to some friendly competition?? Better fix my syncros first though...HE-HE
Anyway, congrats again for finding the problem.
Anyway, congrats again for finding the problem.
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