Hello, i have a question. I got tuned about 2 months ago and i decided now to get an exhaust. I was tuned for 24lbs and it was a conservative tune. If i add a downpipe back exhaust will it cause the psi to go up. I have a mbc and i just want to be on the safe side because i dont have a boost gauge. Thanks in advance.

 

yes your car will most likely spike a couple lbs more.

 

Yes. The test pipe will probably increase boost about 2psi over what you're tuned for now. If you have a MBC just dial it back down a bit.

 

I have a forge mbc, how many clicks do you think i should bring it down. If its a stupid question please ignore lol.

 

The best way to adjust boost is always adjusting it up and not down. So, simply turn it down a full couple of turns and then slowly turn it up 1/2 turn at a time until you reach your tuned boost level.

 

I dont have a boost gauge tho =/

 

If you have an X, the best bet is to get rid off the mbc and go back to the factory boost system.