Low boost on a 3.4 setup

I have been talking to ASE GM Master Tech on just answer and here is what he said about the cat.


You have received an Answer!
From Paul M ASE Master Tech GMC L1

Thursday, October 07, 2010 4:53 PM EST

A clogged cat would decrease vacuum and increase boost


Paul

yeah, one of the nicks said that.

now disconnect the lower vacuum line on your BBV and see what happens.

Bad BBV valve (more then likely), or belt slip or a bag gauge

Quote:

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Originally Posted by gtpinsc

plz explain how a restriction in exhaust flow will cause less boost.

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Because it was a joke, job guy.

I tested the BBV and it seems to be working. Im about to go get a new belt and try that out

Well got it fixed replaced the belt and cleaned the air filter, will be putting the DP in soon!! THanks for the help.

put the 3.8 pulley on....

if i put a downpipe in and ubend delete why would i do that

dont buy a downpipe, just get headers,they are $220 or something crazy low like that.

evan with a dowinpipe your exhaust isnt flowing as much as it should, youd have to replace the front exhaust manifold as well. this is why the headers are great. front and rear mani, crossover, down pipe, and ubend all taken care of

what is your tune for?

the 3.4 setup with the large downpipe and ubend delete

Quote:

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Originally Posted by bluegtp91

Oh I'm not? Ok...telling you putting on a stock pulley isn't helping? Telling you you probably need to address your spark plugs because they might be smashed isn't helping? I've toasted plenty of motors jeeves...and if you don't like my comments...tough sh1t? Its the internet...hate me I don't care...but I bet 20 to 1 I'll figure out your problem before you do...could be a clogged converter too...and probably because you still have the ENTIRE stock exhaust...is childish.

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I lol'd.