I've been poking around here trying to learn from you guys for my upcomming S/C install.....lots of good info thanks. I'm putting in a Stillen kit on my Titan that uses a 5th gen radix style MP112. I hear you guys talk about monitoring IAT's over 6psi of boost, where do you monitor this? Is there a new guage/sensor you install downstream of the intercooler or do you simply data log from the stock IAT sensor location?

Thanks,

 

The Radix kits for GM trucks comes with a new IAT sensor that mounts in the upper half of the intake manifold. Not sure if the Stillen kit is the same....

 

Thanks for the reply.... How much boost can you guys safley run w/a intercooled maggie on a non forged 5.3 or 6.0?

 

I was running 9 psi on my stock bottom end 5.3 and 6.0

 

Kewl beans.....I assume you didn't fry anything @ 9psi? Did you find the 5.3 pulled better up top with the maggie. I hear on a 6.0L MP112 starts to run out of steam. maybe my 5.6 will be ok. Sorry for all of the questions

 

The MP112 had plenty left for the 5.3. I was running a 3.0" pulley to get 9 psi, and with meth/water injection I could keep my IAT's relatively low. On the 6.0L I had to run a 2.8" pulley, and even with meth/water my IAT's were sky high. Neither motor had a problem handling the boost....I was tuned for 11.5:1 AFR at WOT and was running about 20 or 21* of timing.

 

Hey Thunder, when you were running the 3.0 pulley for 9 psi did you re-tune or keep the original Radix tune? Were you able to use the same belt?

 

A retune and a shorter belt were both necessary. I went from a 3.4" pulley to a 3.0".

 

Hey Thunder....What do you most folks consider acceptable IAT's? Is there a magic number to most try to stay under or does it all depend on the motor/application being blown?

 

It depends...I saw IAT's as high as 180* with the Radix, but compensated by pulling timing in the tune.