Doug Thorley Headers group buy
10-07-2010, 12:15 AM
#81
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Thanks ya ill give him a call like i said i only live about 1 from corona cali. so i can just drive there and pick em up. Is there already enough people to get the group buy because i got the money
10-07-2010, 12:20 AM
#82
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damn if your right about the exhaust that means the dude at the exhaust shop lied when he installed my flowmasters.so it would probably be a good idea to go ahead and replace that with 2.5 piping .
10-07-2010, 12:24 AM
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cool, we have about 6 people on the list and they want 9 more=15.....I will call tomorrow if they will take 10. as for your exhaust, do you have the round resonator still on?
10-07-2010, 12:33 AM
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ya, when i went to the shop i told i wanted them to install 2.5 piping and flow super 40's and he told me i already had 2.5.and now im wondering if the inlet in my flowmasters are 2.25 or 2.5 because if there 2.25 and i paid for 2.5 im going to be really pissed.im in the process of deleting the resontaor and doing the ubend delete but i heard in the 06 monte ss its not that big of a deal as far as the ubend
10-07-2010, 12:46 AM
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ya, when i went to the shop i told i wanted them to install 2.5 piping and flow super 40's and he told me i already had 2.5.and now im wondering if the inlet in my flowmasters are 2.25 or 2.5 because if there 2.25 and i paid for 2.5 im going to be really pissed.im in the process of deleting the resontaor and doing the ubend delete but i heard in the 06 monte ss its not that big of a deal as far as the ubend
10-07-2010, 07:48 AM
#86
ya, when i went to the shop i told i wanted them to install 2.5 piping and flow super 40's and he told me i already had 2.5.and now im wondering if the inlet in my flowmasters are 2.25 or 2.5 because if there 2.25 and i paid for 2.5 im going to be really pissed.im in the process of deleting the resontaor and doing the ubend delete but i heard in the 06 monte ss its not that big of a deal as far as the ubend
10-11-2010, 07:35 PM
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Yes! If you get tuned immediately afterwards, the gains are pretty good for a bolt on part... I would guess you would see a 20-30 hp gain from doing this mod and your exhaust would sound beautiful! 
10-11-2010, 07:51 PM
#92
Not peak. I saw a 11 hp peak gain out of the headers and tune. Average it picked up a lot though (this is really what's important). With headers, exhaust, and a hot air intake I went from 13.6 (catless DP, cutout, tune) to 13.4.
10-15-2010, 11:27 AM
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Does anybody have a post about a step by step installation guide for these headers w/ pics? I just want to see how in depth this is or I might leave it to a professional... What do you have to do to remove the tranny dipstick?
10-15-2010, 05:12 PM
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There is a thread about installation, but I can't pull it up because I'm on my BlackBerry.
Its called thorleys headers or something like that, thread was made by buickracer.
Its called thorleys headers or something like that, thread was made by buickracer.
10-15-2010, 07:13 PM
#100
Before anybody post this 
Installation was not that hard,just time consuming.I had her up on all 4,and started from the front exhaust mani,oil dipstick,cross over,cai,throttle body,rear valve cover,trans dip stick,rear exhaust mani,stock dp.
Ill gather my pics up and try to post later today,its a lot eaiser if you have power tools and an extra set of hands,beer,and Carne Asada after installation...
Installation was not that hard,just time consuming.I had her up on all 4,and started from the front exhaust mani,oil dipstick,cross over,cai,throttle body,rear valve cover,trans dip stick,rear exhaust mani,stock dp.
Ill gather my pics up and try to post later today,its a lot eaiser if you have power tools and an extra set of hands,beer,and Carne Asada after installation...