Need some advice on what direction to go

[Sick SVT]

So my current setup is a tvs with 3.0 pulley at 18-19 lbs on 91. I was talking to my tuner today about getting a race gas tune on 108. I don't have e85 close to me so that's out. He said he would up my timing from 18 to 21 or 22. He also said that if im going to run race gas he would pulley down to a 2.8 which would be around 21psi. It's not a daily driver and really only sees track time and occasional weekend cruise. Would you guys pulley down on race gas? I don't want to push it too much as I don't want to build the motor just yet but it's very tempting.

 

[Danno44]

Hell ya pulley that bad boy down, the motor will hold it if your tuner knows what hes doing.

 

[gabe1530]

Hell ya pulley that bad boy down, the motor will hold it if your tuner knows what hes doing.

i agree. now if you were pushing it to 23+ i would say no.

 

[Sick SVT]

I am also throwing the idea around of adding meth instead of race gas. Leaving the 91/torco tune and add a kit from AIS. Out here in the az heat I think I would get more benfits from the cooling effect of meth.

 

[Senkak]

So my current setup is a tvs with 3.0 pulley at 18-19 lbs on 91. I was talking to my tuner today about getting a race gas tune on 108. I don't have e85 close to me so that's out. He said he would up my timing from 18 to 21 or 22. He also said that if im going to run race gas he would pulley down to a 2.8 which would be around 21psi. It's not a daily driver and really only sees track time and occasional weekend cruise. Would you guys pulley down on race gas? I don't want to push it too much as I don't want to build the motor just yet but it's very tempting.

A 2.8" pulley will put you at ~18-19lbs.
A 2.6" will be about 20-21lbs.

 

[gabe1530]

I am also throwing the idea around of adding meth instead of race gas. Leaving the 91/torco tune and add a kit from AIS. Out here in the az heat I think I would get more benfits from the cooling effect of meth.

if i didnt have anything but 91 around me i would go this route.
run it 100% and get a big 5 gallon tank for the trunk. if you 50/50 it, the gains would be minimal.

 

[Sick SVT]

A 2.8" pulley will put you at ~18-19lbs.
A 2.6" will be about 20-21lbs.

I saw 18lbs almost 19lbs on the dyno with a 3.0 upper...:shrug:

 

[Sick SVT]

if i didnt have anything but 91 around me i would go this route.
run it 100% and get a big 5 gallon tank for the trunk. if you 50/50 it, the gains would be minimal.

your saying run 100% meth...no water?

 

[Senkak]

I saw 18lbs almost 19lbs on the dyno with a 3.0 upper...:shrug:

Interesting. Normally a 3" is 16-17lbs.
What does your exhaust sytem consist of?

 

[Bdubbs]

From what I gathered on this forum, many guys running the 3" pulley are in the 17.5-18.5psi range.

 

[Sick SVT]

Interesting. Normally a 3" is 16-17lbs.
What does your exhaust sytem consist of?

Stock manifolds with bassani catted x and bassani catback.