so i just baughtmy buddies dad 98 s70 T5 and im wondering what you volvo gear heads out there are doing to wake up these allready quick cars! nothing to elaborite now, im thinking exhauste, intake maybe boost controler, bov?..anyways where could i source out thses kinds of parts and what would you recommend for it as far as speed improvements go

 

1. You need to search.

2. You need to complete STAGE ZERO.

Full stage 0 list:

Plugs
cap/rotor
oil/transflush
filter (oil)
hoses (the little vac lines)
samco hose kit or Stylin Motors Inc. hose kit (Turbo Models ONLY)
02 sensors
fuel pumps
clean injectors
clean IC/IC plumbing (Turbo Models ONLY)
Air filter
plug wires

Also get a boost gauge that can read 25 In Hg/25 PSI.

3. What is your budget?

4. What is your Hp goal?

*The most popular things to do are as follows...

A. Intake
B. Downpipe
C. Catback
D. ECU upgrade

IMO I don't recommend using a Manual Boost Controller (MBC). I suggest you raise the boost via an ECU upgrade.

Again I suggest you search, I have created a wonderful thread that has many different sites listed.

https://volvoforums.com/m_38606/tm.htm

-IPD USA
-EuroSportTuning (EST)
-Viva Performance

These are the three companies I recommend.