PSI or the XXX ?

[117bigdog]

Looking on here there are some of you going with the XXX and some with the PSI carb. Give me some advantages and disadvantages on the carbs you have tried.

 

[Raywood]

PRICE!

 

[117bigdog]

PRICE!

meaning? You have one or none at all?

 

[Scott041804]

Honestly i never tried the xxx carb but i know that the PSI had a mininum of 10 percent gain on hp and torque.

 

[117bigdog]

I guess that would be over a stock carb? I have a S&S with a thunder jet and can't see it gaining that much more.

 

[go4dave]

I already bought the TazXXX,, and now i just gotta' tune it. So, i'll see what it gains,, and I'll post up the dyno sheets, so everyone can see them.

 

[117bigdog]

Is the 91hp and 101 torque before carb and no other work?

 

[Tim]

I'd go with the XXX myself, seems like more bang for the buck.

 

[go4dave]

Is the 91hp and 101 torque before carb and no other work?

the 91hp/101lbs is box stock. On a Dyno-Jet dyno. It was 93* on a nice fall day, 2700ft elevation, 11% humidity, 27.88 barmatric pressure. Air/Fuel was running a touch lean on the top end. SAE: 1.08

 

[117bigdog]

so when you get it running and get it dyno'd will the carb be the only upgrade. just trying to see what that carb makes with a before and an after dyno run.

 

[go4dave]

Is the 91hp and 101 torque before carb and no other work?

the 91hp / 101lbs is box stock. The Dyno is a DynoJet. It was a Fall Day. Temp was 93 degrees, Elevation of 2700ft, 11% humidity, 27.88 barmatric pressure, SAE: 1.08 Air/Fuel was running a little lean on the top end. 3 runs,, all within a fraction of eachother. At that time, i had about 800 miles on it.


Yes,, the only difference will the CARB. a few more miles,, and of course the Temp/Humidity/Barmetric Pressure. But those can be all calculated afterwards to give same day numbers.

 

[117bigdog]

great. Can't wait to hear what the new numbers will be.

 

[Scott041804]

I guess that would be over a stock carb? I have a S&S with a thunder jet and can't see it gaining that much more.

That is exactly what i had a G carb with the bigger T-Jet nozzle and i actually gained about 12 percent power!!!

 

[117bigdog]

I'm trying to figure out if switching to the taz carb from XXX would I gain more than what I have. And then seeing the PSI well I'm not sure now. But I see xxx is cheaper.

 

[117bigdog]

That is exactly what i had a G carb with the bigger T-Jet nozzle and i actually gained about 12 percent power!!!

wait you had the S&S G with thunderjet, then when you went to the PSI you gained 12 % ?

 

[Raywood]

meaning? You have one or none at all?

I had my carb modified by xXx when they first started for $140. The PSI is like a $1000.

I'm still running the E carb and liking it for it's better response for the street.

Later,
Ray

 

[05chop]

SCOTT The pic of you in a wheelee .Is this a bigdog? 05chop

 

[Gas Man]

Notsure what bike that is .... but he's loopin it!

Scott... I run TwoWheelForum if you want to click over there and get your sportbike crave in.

 

[Gas Man]

Here's my logic on the deal... its simple

10-12% HP gain either way.

PSI vs XXX + Direct MC Lift

Both the same price. And they you'll have the lift for all those jet changes.

Can you guess which way I went?

 

[Bulldog03]

Wish my name was Trump I'd get two bikes one with a XXX and a PSI but I wake up and look forward to my stock dog with a G , soooo other?