Okay so I have a wrapped Megan tubular manifold and in between the 1st and second tube along with the third and fourth tube there were originally 2 hex bolts screwed onto the manifold itself. After a week or so I did a couple pulls that blew both bolts off. I tried to get Megan to send me some replacements but they were charging me a ridiculous amount of money so I decided to go buy some at my local hardware store. They still blow off once in a while so I was wondering what the holes were for? Do they have a purpose? If not I might as well weld the bolts in there next week or so.

 

you can use it for EGT but you minus well weld the dam bolts in megan FTL

 

i know this is a stupid question but what's an egt

 

Exhaust Gas Temp