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98 v70 T5 minor performance mods

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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Year and Model: 1998 Volvo V70 XC
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98 v70 T5 minor performance mods

Post by CIK7 » Tue Jul 09, 2019 11:25 pm

Tomorrow my 01 V70 base goes bye bye to someone who could careless whether its a turbo. I enter the p80 realm with excitement. Finally I'll get to buy a P80 v70 t5. Its almost perfect. Almost. I would like some help with advice on minor performance upgrades. Should I change the FAI with a CAI? Not too stiffling but not too much that the ngine gets dirty.
What if I replace the cat with just straight piping?
I at least want to get rid of the two mammoths that make up the mufflers. Anyone have experience with the cheap $35 growling mufflers on eBay?
Lets say i want to step it up to the next level with the turbo. 98 V70 T5 comes with 16T. Next one is 18t. Whats needed to make that jump? I made a similar post about a 98 v70 xc but that didnt go through and that was referring to serious performance boost. Please help me. TIA
1998 V70 XC black ($1K trade, Mi:144/149K, immaculate engine, totalled 5/2/20)
1998 V70 XC white ($50 cash, junk, donor for my black XC)
2001 V70 Ba white (sold)
2009 Impala LT 3.5L (sold)

Plans for my 98 XC: 16T/18T, P2 M66 swap, logo/badge delete excl grille

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Re: 98 v70 T5 minor performance mods

Post by Clemens » Wed Jul 10, 2019 1:37 pm

Keep the cat and don't ruin our planet on purpose. Thanks!
That being said, get a good cat back exhaust (TME, IPD), a good tune from ARD or va5t and if you want a downpipe. That should push you towards 270 to 280 hp. If you need more, it gets really pricey quickly.
A good stage 0 with new ignition parts, all new vacum hoses and a clean pcv system goes without saying.
Summer: 1996 855 R
Winter: 1994 855 T5M
Donor: 1995 854 10V

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Re: 98 v70 T5 minor performance mods

Post by matthew1 » Wed Jul 10, 2019 1:58 pm

What Clemens said. Tune, downpipe, exhaust, those are your bottlenecks. Stock intake is pretty good.
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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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