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13t boost questions

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
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Gmstewart22
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Year and Model: 2000 v70 GLT, 850-T5
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Gmstewart22

Re: 13t boost questions

Post by Gmstewart22 » Sat Apr 13, 2019 6:47 pm

In that case cant I just adjust my wastegate linkage to hold more boost?


2000 v70 GLT
1997 v70 AWD lpt
1997 v70 AWD lpt "rally rig"
1995 850 T5

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matthew1
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Year and Model: 850 T5, 1997
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matthew1

Re: 13t boost questions

Post by matthew1 » Sat Apr 13, 2019 7:05 pm

tardcart wrote:
Sat Apr 13, 2019 6:31 pm
not sure when boost pressure became part of the ECU input. 2000 im guessing, could be 99. Im only guessing, but people use the 99 and 98 ECU in 850's so must not have boost pressure input.
1998. 1997 is the last year for using a manual boost controller without an ECU tune.


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1997 850 T5, MSD ignition coil, Hallman manual boost controller, injectors, R bumper, OMP strut brace [gone]
2004 V70 R [gone]

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Gmstewart22
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Gmstewart22

Re: 13t boost questions

Post by Gmstewart22 » Sat Apr 13, 2019 7:09 pm

In that case I probably cant just tighten the wastegate linkage my cars was built in 97 but the vin code says is a model year 1998


2000 v70 GLT
1997 v70 AWD lpt
1997 v70 AWD lpt "rally rig"
1995 850 T5

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Gmstewart22
Posts: 58
Joined: Sat Sep 29, 2018 11:56 am
Year and Model: 2000 v70 GLT, 850-T5
Location: ALASKA
Has thanked: 11 times
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Gmstewart22

Re: 13t boost questions

Post by Gmstewart22 » Sat Apr 13, 2019 7:16 pm

Literally purchased both cars from different sellers on craigslist in the same week. One has an excellent body and transmission the other has good motor and trans but beat up body.. between the 2 I am starting my new build
Attachments
20190402_132006.jpg
20190402_121412.jpg


2000 v70 GLT
1997 v70 AWD lpt
1997 v70 AWD lpt "rally rig"
1995 850 T5

User avatar
Gmstewart22
Posts: 58
Joined: Sat Sep 29, 2018 11:56 am
Year and Model: 2000 v70 GLT, 850-T5
Location: ALASKA
Has thanked: 11 times
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United States of America
Gmstewart22

Re: 13t boost questions

Post by Gmstewart22 » Sat Apr 13, 2019 7:20 pm

My wife's car is on the far end.. same color, motor, everything except hers is MY 2000 and its front wd
Attachments
20190406_141409.jpg


2000 v70 GLT
1997 v70 AWD lpt
1997 v70 AWD lpt "rally rig"
1995 850 T5

User avatar
Gmstewart22
Posts: 58
Joined: Sat Sep 29, 2018 11:56 am
Year and Model: 2000 v70 GLT, 850-T5
Location: ALASKA
Has thanked: 11 times
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United States of America
Gmstewart22

Re: 13t boost questions

Post by Gmstewart22 » Sat Apr 13, 2019 7:27 pm

Paid $450 for the one with the good motor and trans got the one with penguins sticker free from my neighbor..
Seized motor!


2000 v70 GLT
1997 v70 AWD lpt
1997 v70 AWD lpt "rally rig"
1995 850 T5

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matthew1
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Joined: Sat Sep 14, 2002 11:03 am
Year and Model: 850 T5, 1997
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matthew1

Re: 13t boost questions

Post by matthew1 » Sat Apr 13, 2019 9:31 pm

Cool! Good looking V70. You can adjust the wastegate for different behavior. What it does is change the RPM range when boost is available, not the amount of boost. It's a misconception that it'll increase or decrease boost pressure itself.

Volvo Wastegate Adjustment, A Closer Look - theory
Wastegate Rod Adjustment Results
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1997 850 T5, MSD ignition coil, Hallman manual boost controller, injectors, R bumper, OMP strut brace [gone]
2004 V70 R [gone]

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Gmstewart22
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Gmstewart22

Re: 13t boost questions

Post by Gmstewart22 » Sat Apr 13, 2019 10:21 pm

Confused.. the attached article says that adjusting the wastegate will increase or decrease the amount of available boost which is what I thought it would do. The wastegate keeps the turbo from overboosting via spring/mechanical pressure against waste gate door??


2000 v70 GLT
1997 v70 AWD lpt
1997 v70 AWD lpt "rally rig"
1995 850 T5

User avatar
matthew1
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Posts: 9566
Joined: Sat Sep 14, 2002 11:03 am
Year and Model: 850 T5, 1997
Location: Denver, Colorado, US
Has thanked: 286 times
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United States of America
matthew1

Re: 13t boost questions

Post by matthew1 » Sat Apr 13, 2019 10:36 pm

If it was that easy, the ECU tuning companies would be out of business.


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1997 850 T5, MSD ignition coil, Hallman manual boost controller, injectors, R bumper, OMP strut brace [gone]
2004 V70 R [gone]

User avatar
Gmstewart22
Posts: 58
Joined: Sat Sep 29, 2018 11:56 am
Year and Model: 2000 v70 GLT, 850-T5
Location: ALASKA
Has thanked: 11 times
Been thanked: 0
United States of America
Gmstewart22

Re: 13t boost questions

Post by Gmstewart22 » Sat Apr 13, 2019 11:06 pm

Perhaps this is just my ignorance, but when I turn up my wastegate pressure I get an overboost code and my computer compensates by cutting fuel my tuner guy says that's what he tunes for.. he adjusts the computer to accept a higher value.. man now I'm really confused! Again pardon my ignorance I've only been into volvos for a few years and just recently started nodding them


2000 v70 GLT
1997 v70 AWD lpt
1997 v70 AWD lpt "rally rig"
1995 850 T5

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