What size pulley w/o tune?

[Bobrammer]

How small of a pulley can I safely run without a tune? I'd like to wait until Superchips has their 04 update before installing a chip.
Many thanks!

 

[ALA G8R]

3.4 is no problem without a tune.
3.2 is ok, but should have A/F checked on a dyno.
3.1 don't recommend without a tune.

 

[Bobrammer]

Anybody else?

 

[dougwg]

Originally posted by ALA G8R
3.4 is no problem without a tune.
3.2 is ok, but should have A/F checked on a dyno.
3.1 don't recommend without a tune.

Agree!

 

[MystiChrome Coupe]

What kind of gains could you expect from the 3.4 or the 3.2?

Also what if a CAI & catback is installed? CAtted X? Would a tune then be needed with those pullies?

 

[PowerWheels]

I've got the CAI and Cat-Back. So a 3.2 with what i've got might not need a tune? An how much added power with the pulley?

 

[ALA G8R]

Originally posted by johnsonl
I've got the CAI and Cat-Back. So a 3.2 with what i've got might not need a tune? An how much added power with the pulley?

I got 23 rwhp from a 3.4 and no tune. I got 44 rwhp on a dyno with a 3.1 and no tune. I can extrapolate and say that a 3.2 wouldv'e given me about 37rwhp. (rough estimate).