Is there a noticeable difference in lower IAT's with a 90mm on the radix. I going to run my radix for the first time with just the 90 so I was curious

 

I read that alot originially, but never seen that to be true. You should however get more boost with the 90mm over the 78mm with the same pulley size.

 

I was hoping that the loss of boost from long tubes is offset by the 90mm TB.. I know boost = equal power but just a restriction to flow.. but I feel kinda lame with 4-5psi of boost

 

Time to pulley down.
You might pick up a half-lb with the 90mm TB or more if your intake has been a restriction.

 

haha the problem is pulley down means its turns into a real george forman grill!!!!

Now I'm regreting not getting the 122...

 

The 90mm when used with the x-link should pick you up about 1psi. The nice thing is that you can run more boost with less blower speed. It's a great mod.

 

I think so.. that's why i went ahead and did it before i got the charger installed. I hope this setup is enough power for me. I'm hoping to break into the 13's with this heavy pig. If not, its cam time!

 

Didn't 04Denali get into the 12's with his M112...I don't think he had the 90mm eiter.

 

yea he did, but I think he had a 2.8 pulley, stall and maybe a cam??

I'd add a smaller pulley but I've heard much smaller than the 3.1 w/o meth just turns the radix into a heater. I don't go to the track enough to warrant the meth.. the time is just for personal satisfaction and maybe soooooome bragging rights

 

Thus generating less heat.....Looks like you contradicted your above statement