Who's in for a BEGi Down Pipe? - Page 2 - Miata Turbo Forum - Boost cars, acquire cats.

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Old 11-27-2006, 12:51 PM   #21
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Sounds like a hell of a deal.
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Old 11-27-2006, 12:52 PM   #22
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They should package it with the water by-pass system. You guys are going to need it.
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Old 11-27-2006, 02:03 PM   #23
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Originally Posted by Wideopentuning View Post
I just don't like seeing potentially good products shot down because of Miata.net like thinking. The amount of nice parts like this for the Miata is pretty limited.
I never said BEGI's DP wouldnt be a good idea...and bigger is always better as they say. But again, the major restriction in the Greddy system or any turbo system for that matter is the turbine itself. My GT32 has an outlet of 2.5in. I have a 2.5in custom DP...I might have used a 3" but I couldnt fit it plus the gains really are minimal. I understand why you say larger than 2.5" will make power...because you still have exhaust volume to think about...and the larger the pipe the easier it is for the exhaust to make its way out. But still....2.75" -vs- 2.5" is not going to be night and day. I would expect 100rpm gains in spool and MAYBE 5whp mostly from the better WG merge of the BEGI DP. Im just stating my opinion...and I have nothing to back it up with either. Just using general physics and knowing that the biggest restriction is the turbine wheel and 2" outlet you can deduce that the gains from a larger DP will be very small.
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Old 11-27-2006, 02:04 PM   #24
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Well, it's up to BRG now. If he gets his car in next week, Corky and Tim will mock it up.
It would be bitchin if BEGi throws BRG's whip on the dyno before and after. If it ~only~ gives 5 hp more than Tony's it's worth the minimal extra investment.

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Old 11-27-2006, 02:07 PM   #25
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well even if it gives no gain I would still rather have BEGI's DP.
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Old 11-27-2006, 02:26 PM   #26
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100 rpm gain in spool.....I have seen people kill for less
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Old 11-27-2006, 02:31 PM   #27
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I killed for a toothpick once, how low of me.
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Old 11-27-2006, 02:36 PM   #28
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I killed for a toothpick once, how low of me.


I have been lower, I once killed for a blade of grass. I was in the desert...and it was a mirage. So I killed for not...I am terrible.
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Old 11-27-2006, 02:46 PM   #29
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I would kill to have an infinite supply of Diet Rockstar. I think I will go crack open my 4th one of the day right now.
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Old 11-27-2006, 02:50 PM   #30
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Diet EEK
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Old 11-27-2006, 02:57 PM   #31
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If a 2.75" DP can fit fantastic, I just don't think it will.
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Old 11-27-2006, 02:59 PM   #32
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Unless he builds it like mine. Where the top half is 2.5" and only 2.75" after the slip-joint.
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Old 11-27-2006, 04:01 PM   #33
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Why don't you all be men and cut a big hole in your hoods and run a 4" dump straight up thru it.
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Old 11-27-2006, 04:08 PM   #34
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I'll post pics of a 3" soon
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Old 11-27-2006, 04:09 PM   #35
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I wish I saved a photo a customer sent me. we sold him a $100 exhaust tip. Something like 7" round, and 13" long. That would make a nice exhaust.
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Old 11-27-2006, 04:09 PM   #36
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dude, no one wants to see your 3 inches!





Quote:
I'll post pics of a 3" soon
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Old 11-27-2006, 04:10 PM   #37
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Zing:gay:
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Old 11-27-2006, 05:05 PM   #38
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If these get made I WILL buy. I am so glad i didnt go with racingmazda's downpipe. (not that there is anything wrong with it.)
Woah there are now 3 different downpipe makers LOL. I will be susprised if the 2.75in fits with the stock manifold. We shall see I guess.
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Old 11-27-2006, 05:12 PM   #39
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there is something wrong with the Racing Mazda one, they still don't produce them (IIRC)....
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Old 11-27-2006, 05:16 PM   #40
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they might make stuff but markp seems to be the only person who can get anything good from them
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