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!

Seems slow/sluggish after tune? (w/ pics)

Help, Advice, Owners' Discussion and DIY Tutorials on Volvo's stylish, distinctive "P2" platform cars.

2001 - 2007 V70
2004 - 2007 V70 R
2001 - 2007 XC-70
2001 - 2009 S60
2003 - 2007 S60 R

MisplacedCanuck
Posts: 23
Joined: Fri May 01, 2020 2:00 pm
Year and Model: 2002 XC70
Location: NB
Has thanked: 0
Been thanked: 0
Canada
MisplacedCanuck

Seems slow/sluggish after tune? (w/ pics)

Post by MisplacedCanuck » Wed May 13, 2020 4:58 pm

Installed a tune on my 2002 Volvo v70 xc today... And it feels essentially the same? Ive driven another, 2004 V70 XC and it feels peppier then mine, and it was stock. After consulting the almighty internet, I began to check all the charge piping connections, starting at throttle body:

Throttle body to intercooler looked good
Intercooler to charge pipe looked good
Charge pipe to turbo discharge looked good

To me, that's all the pressure piping. Lo and behold, just beyond there, a nightmare.

I've attached pictures of the air intake hose. It wasn't attached. Could this be why the car feels sluggish? Should I go back and check downstream of turbo again?

Also... Where is the famous TCV everyone keeps talking about? Is the small box I've shown in pictures it?

Thanks again!
Attachments
IMG_20200513_185112.jpg
IMG_20200513_185121.jpg
IMG_20200513_193842.jpg
IMG_20200513_193850.jpg
IMG_20200513_193904.jpg
2002 Volvo V70 XC

User avatar
- Pete -
Posts: 614
Joined: Fri Dec 06, 2013 10:13 pm
Year and Model: 01, 04, 04, 04 V70's
Location: Minnesota/Wisconsin
Has thanked: 54 times
Been thanked: 76 times
United States of America
- Pete -

Re: Seems slow/sluggish after tune? (w/ pics)

Post by - Pete - » Wed May 13, 2020 7:08 pm

I’d say she’s done for. Not even worth keeping that pipe for a backup :D

Yep, that’s the TCV alright.

Snabb makes an inexpensive replacement for that turbo inlet pipe. I think they are around $140-150. Stock is probably a little less than that.
2001 V70XC 146k
2004 V70 AWD 141k
2004 V70R M66 144k
2004 XC70 287k
2006 XC70 155k Sold

MisplacedCanuck
Posts: 23
Joined: Fri May 01, 2020 2:00 pm
Year and Model: 2002 XC70
Location: NB
Has thanked: 0
Been thanked: 0
Canada
MisplacedCanuck

Re: Seems slow/sluggish after tune? (w/ pics)

Post by MisplacedCanuck » Wed May 13, 2020 7:13 pm

Yeah, I'm trying to source a new one. Would this be why I'm having performance issues? It feels like there's barely any boost.

I thought the TCV lives on the turbo? Looks like it has maybe been relocated on this car?
2002 Volvo V70 XC

User avatar
- Pete -
Posts: 614
Joined: Fri Dec 06, 2013 10:13 pm
Year and Model: 01, 04, 04, 04 V70's
Location: Minnesota/Wisconsin
Has thanked: 54 times
Been thanked: 76 times
United States of America
- Pete -

Re: Seems slow/sluggish after tune? (w/ pics)

Post by - Pete - » Wed May 13, 2020 8:02 pm

Actually, the CBV (Compressor Bypass Valve) lives on the turbo. The TCV is your Turbo Control Valve, aka, BCS or Boost Control Solenoid. Without it, you will only make as much boost psi as your wastegate is set to. It normally is clipped to the side of the airbox, underneath the pipe running from the airbox to the turbo. TCV has been talked about a bit lately it seems. Interval to replace TCV is something like 30-40k.

1113F5D0-ACE0-4B7F-ADC0-041E0DD51BC4.jpeg
TCV normally can be found here
1113F5D0-ACE0-4B7F-ADC0-041E0DD51BC4.jpeg (99.44 KiB) Viewed 134 times

CBV you shouldn't have to worry about unless your diaphragm has torn, which you would know about if it had occurred. Replacing the CBV is not fun, very tedious (bordering on painful) work the first time you do one. Tell you what, I'd do 8hr shifts 5 days a week doing intake manifold banjo bolts vs doing CBV's :lol:

Do you have a manual boost gauge? If not, I'd highly recommend putting one in. 20 minutes roughly to install and lots of good info you can glean from it. Plus if you have a tune, you can see if you are achieving what the tuner has said you should be making. Who is your tune by/from?

Having that busted up inlet pipe is definitely not helping you make power. The parameters being monitored are likely all way off.

Here's the Snabb pipe. Probably available cheaper elsewhere, maybe ViVA, Re-Volv or Eurosport Tuning perhaps.

Here's the stocker. You could probably get just the pipe sans PTC cheaper.
2001 V70XC 146k
2004 V70 AWD 141k
2004 V70R M66 144k
2004 XC70 287k
2006 XC70 155k Sold

MisplacedCanuck
Posts: 23
Joined: Fri May 01, 2020 2:00 pm
Year and Model: 2002 XC70
Location: NB
Has thanked: 0
Been thanked: 0
Canada
MisplacedCanuck

Re: Seems slow/sluggish after tune? (w/ pics)

Post by MisplacedCanuck » Wed May 13, 2020 8:46 pm

Manual boost gauge is ordered, should be here next week. In the mean time, I'll source a stock intake pipe. Tune is from Hilton tuning.
2002 Volvo V70 XC

User avatar
abscate
MVS Moderator
Posts: 21021
Joined: Sun Feb 17, 2013 5:54 pm
Year and Model: 99T5 ,99S70,2005V70
Location: NYC, ALBANY NY
Has thanked: 315 times
Been thanked: 969 times
Trinidad & Tobago
abscate

Re: Seems slow/sluggish after tune? (w/ pics)

Post by abscate » Thu May 14, 2020 4:17 am

Stage zero first...plugs, coils, PCV , air filter.
Empty Nester
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 BMW
Link to Maintenance record thread
Link To Volvo Glossary

MisplacedCanuck
Posts: 23
Joined: Fri May 01, 2020 2:00 pm
Year and Model: 2002 XC70
Location: NB
Has thanked: 0
Been thanked: 0
Canada
MisplacedCanuck

Re: Seems slow/sluggish after tune? (w/ pics)

Post by MisplacedCanuck » Thu May 14, 2020 5:59 am

Stage zero is complete, first thing I did when I got the car! Did not notice that the intake hose on the turbo had disintegrated.
2002 Volvo V70 XC

User avatar
ndphotonl
Posts: 201
Joined: Sun May 27, 2018 7:09 am
Year and Model: 2001 S80 2.4T
Location: Netherlands
Has thanked: 26 times
Been thanked: 25 times
Contact:
Netherlands
ndphotonl

Re: Seems slow/sluggish after tune? (w/ pics)

Post by ndphotonl » Thu May 14, 2020 1:02 pm

That is also part of stage 0 if you ask me. The base for tuning should always be good, before adding more power.

The rip in the intake hose should cause your car to run lean (extra unmetered air). I can recommend upgrading the intake hose with a uprated silicone one. It makes quite a difference!

Also do a readout with VIDA/DICE, it might show more issues which you are not aware of.

ImageVolvo S80 2.4T OEM vs Do88 Turbo Intake Pipe by Andy Ramdin, on Flickr

ImageVolvo S80 2.4T OEM vs Do88 Turbo Intake Pipe by Andy Ramdin, on Flickr

ImageVolvo S80 2.4T OEM vs Do88 Turbo Intake Pipe by Andy Ramdin, on Flickr
Volvo S80 2.4T Wasa Limited Edition
Blog / FlickR / YouTube channel

MisplacedCanuck
Posts: 23
Joined: Fri May 01, 2020 2:00 pm
Year and Model: 2002 XC70
Location: NB
Has thanked: 0
Been thanked: 0
Canada
MisplacedCanuck

Re: Seems slow/sluggish after tune? (w/ pics)

Post by MisplacedCanuck » Thu May 14, 2020 1:05 pm

Hose is replaced, she is much happier now! Was a bit of a pain getting new one on there... Hidden right in the back of engine.
2002 Volvo V70 XC

MisplacedCanuck
Posts: 23
Joined: Fri May 01, 2020 2:00 pm
Year and Model: 2002 XC70
Location: NB
Has thanked: 0
Been thanked: 0
Canada
MisplacedCanuck

Re: Seems slow/sluggish after tune? (w/ pics)

Post by MisplacedCanuck » Wed May 20, 2020 9:23 am

So, installed boost gauge as per Pete's suggestion... I'm suspecting CBV is toast. I replaced all the vac lines, she makes a solid -20inHg of vac. On acceleration, hits 4 or 5 psi and holds there, every gear. Not the best.
2002 Volvo V70 XC

Post Reply
  • Similar Topics
    Replies
    Views
    Last post