IPD sale XeMODeX - Experts in Volvo Electronics
Did you know? 🤔
Logged in users can get email notification of topic replies Log in or register (free).
Amazon Link Buy anything with this and it helps MVS!

99 T5 - questions about boost control: boost maps, why the adjuster Topic is solved

Help, Advice and DIY Tutorials on Volvo's extremely popular car line -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, 850 R, 850 T5-R, 850 T5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

Posts: 14
Joined: Sun Jul 28, 2019 7:42 am
Year and Model: 2008 c30
Location: indiana
Has thanked: 0
Been thanked: 1 time
United States of America

Re: 99 T5 - questions about boost control: boost maps, why the adjuster

Post by projectsmorol » Mon Jul 29, 2019 7:43 am

Playing with with waste gate tension rod, especially when you do not fully understand it, is not the wisest move. I'm not pointing fingers
or judging someones intelligence. Waste gates open at a preset tension based on the spring in the gate. 4,7 psi etc. at those pressures the gate opens allowing exhaust gas to bypass the compressor and either be returned to exhaust system, intake charge or atmosphere(racing)
It is one of many components set up in a system of checks and balances to control boost pressure, spikes, overboosting etc.

Use a boost controller and you are effectively "tricking" the ECM into thinking that waste gate is at a different pressure than what it really is. These items can be used, and they do help produce gains, IF you know what you are doing.

One the flip side, if you've got a ton of money lying around and just want to play a bit of roulette, spin the barrel and see which part fails first.

All of these adjustments by the way are minute. 1/8th to a 1/4 turn at a time with logs in between to see what effect the adjustment made.

It's a slippery slope.
2008 C30:
Darton wet sleeves|CP Carrillo pistons&rods|Upgraded injectors|K16 turbo|3"downpipe|ELEVATE:cat back|custom intake|turbo intercooler hard pipe|lower motor mount|turbo blanket|intake plenum|downpipe wrap|dual bypass valve|lowering springs|rear camber arms|do88 FMIC|Porche 70mm TB|BMC air filter|MAF upgrade|Turbosmart waste gate|meth injection|IPD brake lines|NGK iridium 1 step colder|APR head studs|AEM AFR/Boost Gauge|Hilton Tuning

Posts: 1098
Joined: Sat Apr 20, 2013 10:56 am
Year and Model: 1999 V70 T5
Location: Los Angeles, CA
Has thanked: 1 time
Been thanked: 21 times
United States of America

Re: 99 T5 - questions about boost control: boost maps, why the adjuster

Post by j-dawg » Sat Aug 03, 2019 6:16 pm

I had no intention of running the actuator at anything besides factory spec.
1999 V70 T5 5-SPD | ~270k mi | burns more oil than gasoline

Post Reply
  • Similar Topics
    Last post