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Old 09-28-2014, 10:11 PM   #1
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Next mod: LT headers or 3.73 gears?

Currently deciding which mod would be better for my next purchase. I would buy ceramic BBK LT headers with catted BBK mid pipe, or the 3.73 gear kit from AM with a $450 instal price( I would instal headers myself).

I am asking you guys which you think would be a better mod. I currently have Borla ATAK axle backs, so I'm not sure how much louder the LTs would make the car sound. Please give me some input, I would greatly appreciate it.
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Old 09-28-2014, 10:21 PM   #2
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Originally Posted by 3.7L View Post
Currently deciding which mod would be better for my next purchase. I would buy ceramic BBK LT headers with catted BBK mid pipe, or the 3.73 gear kit from AM with a $450 instal price( I would instal headers myself).

I am asking you guys which you think would be a better mod. I currently have Borla ATAK axle backs, so I'm not sure how much louder the LTs would make the car sound. Please give me some input, I would greatly appreciate it.
I currently have BBK Longtubes and BBK Offroad X with Stock manual cat back.
Its loud as hell at wide open throttle.
Raspy above 3500 all the way to Redline.

Sounds mean up to 3000k. You can get around town being quiet. Once you go WOT you attract a lot of attention.

I am currently looking to mellow it out a bit.

I would say if you have a MT82 Manual go with Longtubes or 3.31 or 3.55 gears. If you have auto go 3.73 and get Lt's later. Gears will give you a bigger smile at first


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Old 09-28-2014, 10:31 PM   #3
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Originally Posted by fission View Post
I currently have BBK Longtubes and BBK Offroad X with Stock manual cat back.
Its loud as hell at wide open throttle.
Raspy above 3500 all the way to Redline.

Sounds mean up to 3000k. You can get around town being quiet. Once you go WOT you attract a lot of attention.

I am currently looking to mellow it out a bit.

I would say if you have a MT82 Manual go with Longtubes or 3.31 or 3.55 gears. If you have auto go 3.73 and get Lt's later. Gears will give you a bigger smile at first


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Agreed. Gears will give you more bang for your buck. But the headers are good to look at afterwards.

3.73 is too much gear for a manual, but it's spot on imo for an automatic. Just had mine done 3 weeks ago. Love em so far.

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Old 09-28-2014, 10:43 PM   #4
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Thanks for the input!

I do have the manual transmission, but why do you guys think 3.73s are too much gear?


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Old 09-28-2014, 10:47 PM   #5
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Thanks for the input!

I do have the manual transmission, but why do you guys think 3.73s are too much gear?


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Someone with a manual can give you a more detailed answer. But from my understanding it makes first gear nearly useless and a very short 2nd gear.

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Old 09-28-2014, 10:48 PM   #6
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Originally Posted by 3.7L View Post
Thanks for the input!

I do have the manual transmission, but why do you guys think 3.73s are too much gear?


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****ty gas mileage to begin with (if you care about it); basically you will be going through gears a heck lot faster because of high rpms. But hey I wouldn't say 3.73 is an overkill for manuals, 4.10s it be! If you do lots of hwy driving and are planning on FI in future, go with 3.55

If you're all about performance, close your eyes and buy 3.73s

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Old 09-28-2014, 10:48 PM   #7
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Someone with a manual can give you a more detailed answer. But from my understanding it makes first gear nearly useless and a very short 2nd gear.

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Sounds to me like it would give a killer 0-60! Haha


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Old 09-28-2014, 10:50 PM   #8
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Sounds to me like it would give a killer 0-60! Haha


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I was looking for this. This thread is a very good explanation:

The truth about gears..

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Old 09-28-2014, 10:54 PM   #9
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****ty gas mileage to begin with (if you care about it); basically you will be going through gears a heck lot faster because of high rpms. But hey I wouldn't say 3.73 is an overkill for manuals, 4.10s it be! If you do lots of hwy driving and are planning on FI in future, go with 3.55

If you're all about performance, close your eyes and buy 3.73s

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I have 4.10 gears. I get 16 mpg in city lol. Where I live, 93 gas is 3.40$ for a gallon. If you're all about having fun then why not. Worth every single pennies imo
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Old 09-28-2014, 11:21 PM   #10
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I have 4.10 gears. I get 16 mpg in city lol. Where I live, 93 gas is 3.40$ for a gallon. If you're all about having fun then why not. Worth every single pennies imo
Dude you're one lucky felah!! Here in Vancouver 91 is close to $5.60 per gallon and across the border $4 where I usually go.

Not to mention I get around 16.75 mpg city with my 3.31 gears on a manual lol perks of living in North America's most congested city!!

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Old 09-29-2014, 12:28 AM   #11
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I still feel like 3.73 would be a good fit for me. It's just a matter of price at this point.. $710 for parts and install


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Old 09-29-2014, 01:16 AM   #12
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Worth it. People pay a lot more then that. $800-$1000

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Old 09-29-2014, 04:12 AM   #13
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I just got 3.73s installed in my manual six for $300 a couple weeks ago and let me tell you I wish I had done this mod alot sooner. Your low end performance is improved so much it's ridiculous. Definitely the best bang for buck mod imo. First gear is short but you can easily take off in second if you want and now sixth gear is more usable as in I can hit the gas and easily pass someone in sixth. MPG on the highway dropped about 2-3 bUT I actually picked up 2 mpg driving in the city which I do more often so it had been very much wOrth it to me.
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Old 09-29-2014, 02:12 PM   #14
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I have 3.73 in my mt82 first gear is not useless, it's extremely short but good for launching the car hard. I use 2nd gear as my take off gear and it has plenty of power off the line crazy thing is the car still has that 4000rpm pull.


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Old 09-29-2014, 04:09 PM   #15
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With 3.73 and the manual first is short but still plenty useful. By 7k you're running mid to upper 30s. Second still gets you to 60 unless you're running a short tire.

Very happy with my 3.55s, I went that way for the slightly lower rpms at Highway speed.
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Old 09-29-2014, 08:32 PM   #16
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With 3.73 and the manual first is short but still plenty useful. By 7k you're running mid to upper 30s. Second still gets you to 60 unless you're running a short tire.

Very happy with my 3.55s, I went that way for the slightly lower rpms at Highway speed.

What are you highway mpgs?


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Old 09-30-2014, 03:16 AM   #17
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I've got both longtubes and 3.73s and I'll say that the gears have the most bang for your buck. The headers sound great but the gears beat them with the pin-you-to-the-seat feeling you get.
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Old 09-30-2014, 06:39 AM   #18
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Do both mods. I installed my long tubes, so much more power. My 0 to 60 times were around 5.1 to 5.2 seconds. A few weeks later i had my gears installed (went from 3.31 to 3.73) and i installed my aluminum driveshaft. I don't have enough traction to do 0 to 60 times anymore, even with new 2.55/45-18 tires
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Old 09-30-2014, 08:05 AM   #19
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I just installed the Borla long tubes with catless x-pipe this last weekend, then hit the road course the next day. While the car got really raspy sounding at the low end, it pulls quite a bit harder out of corners that I used to have to reach for the shifter to dig out of (they are the reason that I edged out a 911 on course, never beaten him on street tires before). I can't give advice on 3.73 gears, as I have only gone as far as 3.31 (anything past that makes the car significantly slower for autocrossing, and not much of a benefit for the road course either), but have heard that they make the car really fun for everyday driving.
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Old 09-30-2014, 09:25 AM   #20
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Wow thanks for all the great feedback guys, I really do appreciate it. Sounds like gears are the next choice!
Occasionally I do go on the highway, will there be any noticeable difference in highway MPGS between 3.55 an 3.73?

Also, for you long tube headers guys, do they get annoying after a while? Does anyone have them on their daily driver?

Thanks!


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Old 09-30-2014, 09:47 AM   #21
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I have the Borlas on my daily driver, and while they are not annoying per say, I would not turn down a set of resonators to "tame the rasp" that is present below 3000 rpm. Not noisy, just raspy (that being said, I deal with the sound of a dry Heim joint on the watts link all day, clink, clink, clink)...
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Old 09-30-2014, 09:57 AM   #22
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Wow thanks for all the great feedback guys, I really do appreciate it. Sounds like gears are the next choice!
Occasionally I do go on the highway, will there be any noticeable difference in highway MPGS between 3.55 an 3.73?

Also, for you long tube headers guys, do they get annoying after a while? Does anyone have them on their daily driver?

Thanks!


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Old 09-30-2014, 12:32 PM   #23
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Nah like I said I lost about 3 mpg highway but gained 1-2 mpg in the city. There is not much difference between 3.55 & 3.73. You just have to decide what's best for you and go with it. If you have 2.73 now then you will notice a good bump in performance but if you have 3.31 gears then it's useless to go up to 3.55 as you won't notice much of difference. It's either 3.73 or stay with 3.31.
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Old 09-30-2014, 01:06 PM   #24
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I think i'm going to have to disagree with that having driven a 3.55 and 3.31 car, the 3.55 is a noticeable change. I personally wouldn't go over 3.55 on a stick because i feel you're having to shift too much / losing some powerband, but to each his own.
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Old 09-30-2014, 01:29 PM   #25
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Thanks for the input, but it looks like I might have to wait on the gears. A guy in my area is selling a brand new set of Koni adjustable shocks and struts ( the yellow ones) for $600. Pretty hard to pass up!
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Old 09-30-2014, 02:35 PM   #26
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I think i'm going to have to disagree with that having driven a 3.55 and 3.31 car, the 3.55 is a noticeable change. I personally wouldn't go over 3.55 on a stick because i feel you're having to shift too much / losing some powerband, but to each his own.
Yea that's subjective. I think the performance gain out weighs the having to shift more. I guess I should have clarified what I was saying which is the perfor mance gain is not worth the $650-800 you spend to go from 3.31 to 3.55.
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