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Removing the bottleneck from the Greddy Evo TT

Old Jan 24, 2008 | 06:13 PM
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Default Removing the bottleneck from the Greddy Evo TT

Ive seen alot of threads that mention removing the 50mm bottleneck off of the greddy evo tt midpipe, but nothing really that describes the process. Will someone who has performed the removal please tell me how to do it

Thanks
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Old Jan 24, 2008 | 06:44 PM
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We've tried a few different methods, but we starting making this small SS extention tube in 2.75 inch, and flaring it out to 3 inch to mate up the typical 3 inch downpipes we are using with the TT kits. We tig weld the pieces together. If you are bolting up your EvoTT to a set of 2.5 inch test pipes, there is no need to do any modifications.


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Old Jan 24, 2008 | 06:45 PM
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They are bolting up to the APS Extreme Downpipes, not sure if that applies
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Old Jan 24, 2008 | 06:46 PM
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Is that my car?
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Old Jan 24, 2008 | 06:48 PM
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Originally Posted by JAMEZ
Is that my car?
No, it Jeremy's. Your looks pretty much the identical...but no need to flare it out on yours.

Crawl under your car and take a look...its purty under there.
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Old Jan 24, 2008 | 06:49 PM
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Originally Posted by Blackbird CPV35
They are bolting up to the APS Extreme Downpipes, not sure if that applies
Yup, then you need a three inch flange on your exhaust, for a perfect fitup.
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Old Jan 24, 2008 | 06:52 PM
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Originally Posted by Sharif@Forged
No, it Jeremy's. Your looks pretty much the identical...but no need to flare it out on yours.

Crawl under your car and take a look...its purty under there.
I've seen it plenty of times, its a sick weld. I like looking at the open wastegate dump tubes. Weird, but whatever, I think they look badass.
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Old Jan 24, 2008 | 06:57 PM
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Originally Posted by Sharif@Forged
Yup, then you need a three inch flange on your exhaust, for a perfect fitup.

you wouldnt happen to sell those pre welded sections of flange and flared pipe would you? I can find somone to weld the rest of it up
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Old Jan 24, 2008 | 07:11 PM
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^^^
Let me know when you are ready man, I can do it in my garage, TIG or MIG.
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Old Jan 24, 2008 | 07:20 PM
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Yeah, we are doing a small production run. Just call if you need them....but give us a week or so.
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Old Jan 24, 2008 | 07:21 PM
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Originally Posted by jkenefic
^^^
Let me know when you are ready man, I can do it in my garage, TIG or MIG.
Hey Joe...I promise I wont be mad, but someone cracked the back cap on my tig torch over the weekend. Was that you or Louie!
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Old Jan 24, 2008 | 07:28 PM
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^^^
It might have been me... I got stabbed by something over there!

If it is broken then I will fall on the sword for Luie! lol Add it to my tab.

And check your email!
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Old Jan 24, 2008 | 07:45 PM
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Hey man I've been walking around at night time for the last thre months, I am sure I can get around the shop in the day time without stepping or walking into things...
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Old Jan 24, 2008 | 07:50 PM
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Originally Posted by eagletanggreen
Hey man I've been walking around at night time for the last thre months, I am sure I can get around the shop in the day time without stepping or walking into things...
Sign the confession! or I will sick Pearl on you!
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Old Jan 24, 2008 | 07:59 PM
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Originally Posted by jkenefic
Sign the confession! or I will sick Pearl on you!

I just spit beer all over the floor when I saw what you wrote

How is are $tupid little brother
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Old Jan 24, 2008 | 09:21 PM
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Originally Posted by Sharif@Forged
No, it Jeremy's. Your looks pretty much the identical...but no need to flare it out on yours.

Crawl under your car and take a look...its purty under there.
Are you now the welder/owner/tuner etc? That's alot of stuff for one guy to handle!!
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Old Jan 25, 2008 | 05:33 AM
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I opened the bottle neck on my Greddy EvoTT. Its very easy. Just take it to a muffler shop and have them put it on their pipe stretcher/expander. Takes 5 minutes and no welding necessary.Bring the 3" flange with you so they can get it perfect.

Or just buy one of the pieces from Sharif....

Last edited by coachk; Jan 25, 2008 at 05:42 AM.
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Old Jan 25, 2008 | 05:44 AM
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Very nice welds Sharif. Looks like you've got someone with skillz! Can't wait to see what your guys can do for me .

CoachK - so you had the shop cut the existing flange off, then expand to 3", then weld the new 3" flange on? I guess that is one less weld... Do you have any pics of the end result by chance? I asked an exhaust shop and they said they could expand reasonably up to 1/4" using their expander. I was told going from 2.5" to 3" was going to be questionable. Did you expand to 2.75" or all the way up to 3"?

Last edited by rcdash; Jan 25, 2008 at 05:49 AM.
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Old Jan 25, 2008 | 05:55 AM
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Originally Posted by rcdash
Very nice welds Sharif. Looks like you've got someone with skillz! Can't wait to see what you can do for me .

CoachK - so you had the shop cut the existing flange off, then expand to 3", then weld the new 3" flange on? I guess that is one less weld... Do you have any pics of the end result by chance? I asked an exhaust shop and they said they could expand reasonably up to 1/4" using their expander. I was told going from 2.5" to 3" was going to be questionable.
Yes..I cut the flange off and brought it to a local guy who has been doing exhausts for 100 years and he got it perfect.He told me that he would not stretch it any further than what he did, but it did match up perfectly with the 3" flange.Make sure if you go this route(expander) you bring it to someone with experience. I then welded the flange back on and its perfect.

I'll have the car up on the lift this weekend and take some pics and send them to you.
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Old Jan 25, 2008 | 05:58 AM
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100 years is a lot of experience!!
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