Apexi Boost controller
Thread Starter
AudiWorld Member
Joined: Sep 2005
Posts: 141
Likes: 0
Apexi Boost controller
Ok...I know most people go with a chip and that's the best thing to do blah blah blah...but I was given the Apex boost controller as a gift...so I'm trying to use it.
with the Apexi avc-r ... the solenoid only has connections for the waste gate, and charge pipe to measure boost. So, seemingly there's no need for the OEM valve (n75). This set up only allows my car to boost up to like 17 psi....any higher and blow's off and comes back down to like 10 or 5 sometimes going into limp mode....Right now the HVavle is in the intake, with nothing on the nipples for the charge pipe and waste gate....
The guy at the shop seems to think the boost cut on the ECU...
Do you guys have any suggestions as to what the set up for a electronic boost controller should look like for the 1.8T?
thanks a lot
with the Apexi avc-r ... the solenoid only has connections for the waste gate, and charge pipe to measure boost. So, seemingly there's no need for the OEM valve (n75). This set up only allows my car to boost up to like 17 psi....any higher and blow's off and comes back down to like 10 or 5 sometimes going into limp mode....Right now the HVavle is in the intake, with nothing on the nipples for the charge pipe and waste gate....
The guy at the shop seems to think the boost cut on the ECU...
Do you guys have any suggestions as to what the set up for a electronic boost controller should look like for the 1.8T?
thanks a lot
AudiWorld Uber User
Joined: Dec 2000
Posts: 53,281
Likes: 2
It is the boost cut...>>
The ECU is smarter than you. It doesn't have the fuel or timing maps to support higher boost. Chip the car and all bets are off and 25+ is very doable (and safely). Trying to get more out of a stock ECU is sort of a waste of time...
Just upping the boost is NO substitute for a well programmed chip..
Just upping the boost is NO substitute for a well programmed chip..
AudiWorld Uber User
Joined: Dec 2000
Posts: 53,281
Likes: 2
They cut out all the ECU determined safetly factors....>
via Diodes to trick the sensors, and NO it's not a good idea. Cheap Bleed valve MBC's also suck on these cars (mo matter what they say on Vortex)
AudiWorld Super User
Joined: Aug 2001
Posts: 7,771
Likes: 0
Why not just go with the tried and true that so many of us have done on this forum with our TT's....
Why take the chance of damaging your TT.
Many, many of us have chipped cars, manual boost controllers, larger MAF housings, CAI, and larger fuel pressure regulators.
We have all gotten many miles of smiles with these mods and few headaches.
I applaud you for wanting to find something new, but I wouldn't at the risk of damaging that engine.
Many, many of us have chipped cars, manual boost controllers, larger MAF housings, CAI, and larger fuel pressure regulators.
We have all gotten many miles of smiles with these mods and few headaches.
I applaud you for wanting to find something new, but I wouldn't at the risk of damaging that engine.
Trending Topics
AudiWorld Uber User
Joined: Dec 2000
Posts: 53,281
Likes: 2
Only the kind that work well on the 1.8....>>
It's pneumatic, and quite a bit more advanced, both in concept and construction, than the $30 Bleed valves...<ul><li><a href="http://www.modshack.info/BM.htm">http://www.modshack.info/BM.htm</a</li></ul>
AudiWorld Stories
Bringing Audi to Life for Audi Fans
Top 10 Most Expensive Audis Ever Sold on Bring-A-Trailer
Brett Foote
10 Audi Features & Options We Miss the Most!
Joe Kucinski
Audi Recreates Crazy-Looking Speed Record Breaker From 1935
Verdad Gallardo
Coachbuilder Recreates the 1995 Audi TTS Concept
Verdad Gallardo
Every Audi V10 Car Ranked!
Joe Kucinski
9 Audi Designs That Aged Like Fine Wine
Verdad Gallardo
2026 Audi Q5 Buyer's Guide (Every Model Explained)
Brett Foote
Ranking Every Current Audi 'S' Model From Worst to First!
Joe Kucinski
10 Best Audis That are FINALLY LEGAL to Import to the U.S.!
Joe Kucinski
AudiWorld Uber User
Joined: Dec 2000
Posts: 53,281
Likes: 2
No more so than where you are now...>
The stock ECU will just not support more than about 18psi of boost. Read my install notes and boost recommendations..>><ul><li><a href="http://www.modshack.info/bminstall.htm">Info here..</a></li></ul>