ok guys here's the deal iwas running a set of cmi e top headers, and, it was to loud (like really stupid insane loud) . so in the off season i had my "mechanic' install a silent choice system to help my wife cope with the music! the problem is i cant find any info on them(mechanic cant be found). the headers/manifold have name "youngblood" stamped into the manifold and thats it, ive googled a # of times and still cant find any info them, anybody have any ideas on wo makes "youngblood' systems/manifolds? cheers

send some pics to [email protected] and i can help you identify them...

I thought you said they were CMI? Post some pictures, we can help you.

What is the issue? The diverters not working or what?

Feel free to email me direct and I will do all I can to help you out.

[email protected]

Kirk

elite,it sounds like his mechanic took off the cmi's and switched to a off brand with silent choice..

Yikes... maybe that's why the mechanic is nowhere to be found...

That sucks if he snatched the CMI's!

You should have kept the CMI's and went with CMI's Clamp on mufflers!

Another thing that comes to my mind, the name youngblood..i wonder if the boat mfr of youngblood jet boats had their name stamped into their exhaust systems and he may have put used stuff or got them from a marine surplus store..

http://www.youngbloodjetboats.com/INTRO.htmL

hey guys, i will get some pics out shortly. this is my 1st sport/performance boat and i was lead to believe that the silentchoice system he installed would be close in dollar value to the cmi. the deal was an even swap and i pay him the labour to do it(couple hundred bucks)) they look similar to the 'gill' exhust systems which are for sale in the classified section in here.my issue is i keep fouling plugs so iwant to know if its a matter of rejetting or?? bottom line is i just want to no what i have before i start messing around with it.cheers

do youhave efi or a carb?

its a 454 with holley 750 dbl pumper