What performace Mods make sense on '99 V70?

[Bob Sisson]

Ok, I like the V70 Xc. It is nice cross of performace and practicality.

I HAD a Mitsu-Eclipse... not practicale in any way, but lots of fun.
Escpecially after adding lots of performace Mods, and boosting the boost...

WITHOUT changing the boost, keeping it low pressure, what performace mods
actually work....

What I am considering....

K&N Filter.
Underdrive Puley
Turbo Back Large bore Exhaust & dual exit
Hotter Ignition coil
Thermostat

A replacement control unit is NOT being considered as premium Gas arround
here is EXPENSIVE and the engine run rich enough as it is...

Bob S.

 

[Guest]

Ok, I like the V70 Xc. It is nice cross of performace and practicality.

I HAD a Mitsu-Eclipse... not practicale in any way, but lots of fun.
Escpecially after adding lots of performace Mods, and boosting the boost...

WITHOUT changing the boost, keeping it low pressure, what performace mods
actually work....

What I am considering....

K&N Filter.
Underdrive Puley
Turbo Back Large bore Exhaust & dual exit
Hotter Ignition coil
Thermostat

Non of the above will make any appreciable difference to performance of the
2.5T.

Only a chip and a raised boost level will. Around about 230bhp is possible
on regular 95 octane with this engine on the standard turbo (which is maxxed
out at this figure)

Get a grip!

Tim..

 

[Marc Sebens]

95 octane? Where do you find that?

Aren't the common grades 87, 91 and 93?

 

[~^ beancounter ~^]

Marc...consider "mixing up your own brew..."...

---snip---------------------------------
--------------------------------
go out to a paint store or home depot and pick up a can(1 gal) of
xylene or
toulene ... make sure its 100% (usually is)..then mix in 4 oz of marvel
mystery
oil for every 1 gal of xylene/toulene that you put in ... just make
sure that the
xylene/toulene mixture in your tank is no more than 20-25% and you are
fine

xylene is 115 oct and toulene is 110 oct so if you have 5 gal of 91 in
the tank
and put in 1 gal of xylene that makes you mixture about 95oct .. which
is good
for 15+ psi ... at the turbo...
-------------------------------------------

i would look at upgrading the brakes (if needed) to drilled / slotted
discs...look
at upgraded chassis braces, upper and lower, and a thick sway
bar...unless the
car came w/these systems...i would make sure you have a nice, sticky
set of
performance radial tyres...this will help make the car handle like a
dream....imho...

 

[Rob Guenther]

Could mean 95 Octane over in Europe, which is calculated differently then in
North America... In Canada 94 Octane can be bought at Sunoco and 95 Octane
can be bought at Pioneer gas stations - Tho, especially in the case of
Pioneer 95, it's quite a bit more money, even then premium which is 10 cents
more then regular.... I seem to recall paying over a dollar per litre for 95
Octane.... The one time I tried it.

 

[James Sweet]

K&N Filter.
Underdrive Puley
Turbo Back Large bore Exhaust & dual exit
Hotter Ignition coil
Thermostat

A replacement control unit is NOT being considered as premium Gas arround
here is EXPENSIVE and the engine run rich enough as it is...

About the only thing on that list that's even worth looking into is the
exhaust, the other stuff is really only useful when you're already running
high boost and the K&N filter is really only good at wearing out your engine
more quickly. Premium gas is pretty much a no-brainer if you want extra
performance, if you run lower grade the ECU will simply retard the timing
and give you less power. Increasing the boost pressure would be by far the
best bang for the buck, that's the usual first step at increasing the power
of a turbo engine beyond stock.

 

[Guest]

95 octane? Where do you find that?

Aren't the common grades 87, 91 and 93?

Sorry, i am in the UK where our "base" unleaded is 95 RON octane, and super
or premium can be 97 / 98 RON octane. Though i believe our scale of
measuring octane is slightly different to the US scale.

Tim..