I don't know. I've heard alot of people say the shorties don't FEEL much more powerful than stock manifolds. Can't say I agree or disagree, becuase I've never ran a car with them. I do, however have LT's on my 04, and MAN, what a diffrerance over stock!
are you sure you are feeling the difference or just hearing it..with most street cars you will not feel a 15 or 20 HP gain, but you do hear it and it tricks your mind into thinking it,, just like some Harley owners who put straight pipes on their bikes, sounds louder and feels faster, but it is not,,LOUDER does not mean faster
Did installing shortys do anything to the exhaust sound? Even with the stock exhaust? How many miles should be on the car before installing the shortys? I have had mine for 8 months but only have 1700 miles on it may not hit 2000 this year. And do you need to do a tune when you install them like with long tubes. Sorry for all the questions but I have not really considered shortys because it seems like everyone bad mouths them.
Did installing shortys do anything to the exhaust sound? Even with the stock exhaust? How many miles should be on the car before installing the shortys? I have had mine for 8 months but only have 1700 miles on it may not hit 2000 this year. And do you need to do a tune when you install them like with long tubes. Sorry for all the questions but I have not really considered shortys because it seems like everyone bad mouths them.
The only people who bad mouth them are the ones who don't have them..and you can put them on at any mileage, and yes it would be better if you had a tune, but you don't have to
are you sure you are feeling the difference or just hearing it..
Nope. I'm feelin' it. I've worked at a Pontiac dealer for 10 years; drove many GTOs since 04. I KNOW how a stock one feels.
Been a mechanic for 14 years. It is habit for me to examine (feel) every car I drive.
Nope. I'm feelin' it. I've worked at a Pontiac dealer for 10 years; drove many GTOs since 04. I KNOW how a stock one feels.
Been a mechanic for 14 years. It is habit for me to examine (feel) every car I drive.
I'm with ya there man, put SLP LT's on my 05 and major diff.
I completed my install of JBA headers this morning. I might have been able to finish last night, if the bolts that came with the headers were long enough.
I had to buy some 2 1/2" bolts to link up the headers to the factory mid-pipes. JBA includes 2" bolts.
I will have to change out the factory plug wires. The boots that attach to the plug extend out too far and touch the headers.
Overall install took about 4.5 hours.
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'05 Imp Metallic Blue M6, No Spoiler, Magnaflow w/X-pipe, JBA shorty headers
Did installing shortys do anything to the exhaust sound? Even with the stock exhaust? How many miles should be on the car before installing the shortys? I have had mine for 8 months but only have 1700 miles on it may not hit 2000 this year. And do you need to do a tune when you install them like with long tubes. Sorry for all the questions but I have not really considered shortys because it seems like everyone bad mouths them.
Exactly what I am wondering, will it be much louder with the shortys and stock exhaust??
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2004 GTO A4/BLACK/RED
K&N FIILTER - ONLY MOD...SO FAR
"Listen to thine engine and watch thine tach, lest thine whirlybits seek communion with the sun..." - Unknown
Actually the longer the tubes on the headers the lower in the rpm band it brings in the torque band, it has to do the with the resonate frequency of the tube which is based on length and diameter, intake tracks work the same way long tubes small diameter equal stong bottom end but die off on the top end, short intake track larger diameter equal loss on bottom end gain on top end.
Remember these are all relative to the same engine.
Dang I new I should have skipped physics class, all this stuff still floating around in my head.
Best regards, Kent
EMC Engineering
+1 Correct!
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Walt
2005 GTO, PBM/Black, M6, 17's.
LPE CAI, SAP Grills, JHP Gauges & Door Lock Kit. My FQuick Garage
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I'm with ya there man, put SLP LT's on my 05 and major diff. 
Linear Mode
