Your best bet is going to be a full size intercooler.
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Yeah intercooler and cam/rockers are about the best mods you can do before you get into head work.
First off op what are ALL the mods you have? I won't assume everything in your SIG but it may be, so I ask. Second what temperature of weather was your scan taken?
Also I cannot believe nobody caught the whole I dropped 4 seconds off my 0-100 time. That's complete bs IMO due to the fact with 3.4 and bolt ons, street tires on stock manifolds I ran a 13.9@100mph. I highly doubt from headers you ran a 9.9 in the quarter mile, sorry, just sayin.
I too will agree with a basic 3.4 pulley car if you know what your doing and dont jump on the internet bandwagon of hai and headers for all, with 160 thernostats, etc etc head ers are not "needed" do they flow better? Obviously... but keeping it simple and working in steps always works better and nets a better result imo
I did drop 4 seconds off my 0-100. Everything else was stock.
I dropped a solid 10 plus seconds when I put a 3" downpipe in.
I'm being serious though. I do believe my cat was clogged though.
LOL. I love all the misinformation that gets spread around here.
OMG...I ran 4 seconds faster once because I installed headers! IT MUST BE NORMAL!
I never once said it was normal.
You tried to pass it off like it was though.
I didn't do any such thing I just stated that when I installed headers it knocked 4 seconds off my 0-100 times. I can see how that could be misconstrued though.
Then why did you bring it up? Your headers had nothing to do with you dropping 4 seconds. Your post did nothing but help hijack this thread.
Stock Manifolds > Headers?
ROFLMAO
I brought it up to give my input on the subject. My headers had everything to do with dropping the time off my 0-100 although a dp would have maybe got me the close to the same results. My comment didn't derail the thread nearly as much as you did.
This guy knows all...... I mean car guys have been doing it so wrong for all these years...
Can a car run a 3.4 WITHOUT headers? Sure... But with headers you get better flow (as it has been established no one argues with that point) so with better flow would bring better timing and/or a leaner AFR. So for the cost of MOST alternatives why not just get headers.... THAT was more along the lines of my point.
your right... I just dont understand your half assed backwards logic.