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Basic Performance Upgrades

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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Basic Performance Upgrades

Post by Kekesfuneral » Sat Oct 19, 2019 2:19 am

Hi all, new to this site and first time Volvo owner!

I just bought a 98 V70 T5 with 160,000 miles and was wondering what I can tweak in terms of getting a little more Horsies pumping from under the hood. From what I’ve read online, the stock T5’s output is 237HP, which was impressive in the 90s but a little lacking today. I’m looking to get as close to 300 as I can while trying to stay as close to stock as possible. Where should I start?

Thanks, Josh

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Re: Basic Performance Upgrades

Post by RickHaleParker » Wed Oct 23, 2019 1:47 am

~300hp ... Get the stock engine and transmission ship shape (Stage 0) Then a ECU tune.

Look through the BSR Tuning kits for that car to get an idea of what it would take to meet your criteria.
Platform: P80 1998 C70, B5234T3, 16T, AW50-42, Bosch Motronic 4.4, Special Edition package, Plant: Uddevalla Sweden.
Platform: X40 (Nedcar) 2003 S40, B4204T3, 14T twin scroll AW55-50/51SN, Siemens EMS 2000. Plant: Born Netherlands.
Platform P2 2005 XC90 T6 Executive, B6294T, 4T65 AWD, Bosch Motronic 7.0, Plant Torslanda Sweden.
Platform P2 2004 S60R, B2524T4, AW50/51 AWD, Bosch Motronic 7.0, BorgWarner K24 turbocharger, Plant Ghent Belgium.

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Re: Basic Performance Upgrades

Post by Clemens » Wed Oct 23, 2019 2:20 am

As RickHaleParker said: First a good Stage 0 including Timing Blet, PCV system ignition, all vacum hoses etc.
Then you´ll need a freeflowing exhaust, possibly a 3 inch downpipe and a good Tune. BSR has kits, ARD and VA5T have custom tunes.
THis should get you close to 300hp. More would blow upt the tranny in the long run if you have an AT. If you are lucky and have the manual you could go higher, but towards 400 hp the con rods will bend. Forged ones are out there.

Swedespeed has a really nice T5 tuning guide.
Summer: 1996 855 R
Winter: 1994 855 T5M
Donor: 1995 854 10V

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