baddog671

This is a question in regards to my fathers 2010 Roush, so I might not know all the specs but I told him that I'd ask.

He has his car in his vacation home in Florida, so he doesn't drive it regularly, so he hadn't had the chance to really get on it. The other day he said the SC kicked in, but only pushed 3 lbs. The following day he said he took it to 125mph quickly, and it pushed 2 lbs. Under normal driving, apparently it's around -2/-3. Is this normal boost for a stock Roush?

REDBOSS1

What year is it and is it the TVS or the M90?

baddog671

It's a 2010 auto.

I think m90 but I'm not sure

charliebrown266

If it's the M90 should be about 5psi with the stock pulley! Maybe the belt is slipping

Mikes_BLK_GT

5psi is about right possibly a vacuum leak, check all your connections

Edit:AFIK only the P51's came with the TVS and a built lower end to go with it, all other Roush's would be the M-90

kenthicken

Belt slippage