my miata's back... slower :( AVO beats BEGI - Page 4 - Miata Turbo Forum - Boost cars, acquire cats.

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DIY Turbo Discussion greddy on a 1.8? homebrew kit?

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Old 07-10-2007, 02:14 PM   #61
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Quote:
Originally Posted by JasonC SBB View Post
No comments on my HARD data?
I have a few questions.....
Even though the temps were close, what about humidity levels? How long ago was the AVO data collected?
Stephanie
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Old 07-10-2007, 02:30 PM   #62
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Jason, I could have saved you some leg work:
https://www.miataturbo.net/forums/showthread.php?t=6921

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Old 07-10-2007, 02:46 PM   #63
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Quote:
Originally Posted by Stephanie Turner View Post
I have a few questions.....
Even though the temps were close, what about humidity levels? How long ago was the AVO data collected?
Stephanie
The weather in the San Jose area is well, like Groundhog Day in that sometimes weeks go by and the weather's the same. The humidity was... dry as always. The AVO data was collected a few months earlier. There's no doubt in my mind that the spoolup is a lot slower than before, because even early in the morning when it's a lot cooler the car still feels laggy in the 3000 rpm area.
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Old 07-10-2007, 02:49 PM   #64
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Jason, here's what it'd look like if you ported the T25 flange on top of the T3 flange....

Last edited by y8s; 01-12-2009 at 01:37 PM.
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Old 07-10-2007, 06:49 PM   #65
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You're talking about if they make the mani for a t3 but weld a t25 flange on top of the t3 flange, correct? ETD said they would use a t25 flange to begin with.
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Old 07-10-2007, 07:07 PM   #66
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wonder why they didn't offer me that option. @#($*
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Old 07-11-2007, 01:52 PM   #67
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Maybe they didn't have that option back then?
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Old 07-13-2007, 08:58 PM   #68
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sorry for the backtrack

is this convo about this setup?

http://www.bellengineering.net/Image...Miata_S4_4.JPG
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Old 07-13-2007, 09:23 PM   #69
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sad that ETD shorty tube manifold will work for the GReddy but then id have to change my IC and DP set-up.
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Old 07-13-2007, 09:55 PM   #70
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Quote:
Originally Posted by rob View Post
sorry for the backtrack

is this convo about this setup?

http://www.bellengineering.net/Image...Miata_S4_4.JPG
no, it's about the cast mani. read the whole thread and you'll see.
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Old 07-14-2007, 06:02 PM   #71
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Quote:
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no, it's about the cast mani. read the whole thread and you'll see.
I did read the whole thread, Jason says he got the new "direct pulse manifold" and per the begi site that appears to be it.

Jason am I wrong?
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Old 07-14-2007, 06:36 PM   #72
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trust me, it's the cast begi unit... the one with the divider wall to direct the pulses.
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Old 07-15-2007, 07:31 PM   #73
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Quote:
Originally Posted by JasonC SBB View Post
The weather in the San Jose area is well, like Groundhog Day in that sometimes weeks go by and the weather's the same. The humidity was... dry as always. The AVO data was collected a few months earlier. There's no doubt in my mind that the spoolup is a lot slower than before, because even early in the morning when it's a lot cooler the car still feels laggy in the 3000 rpm area.
No differences in tuning?
Stephanie
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Old 07-15-2007, 07:38 PM   #74
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Quote:
Originally Posted by rob View Post
I did read the whole thread, Jason says he got the new "direct pulse manifold" and per the begi site that appears to be it.

Jason am I wrong?

yes you are wrong, there is a big difference between cast iron "directed pulse" and tublaur stainless steel.
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Old 07-16-2007, 02:49 AM   #75
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Quote:
Originally Posted by Stephanie Turner View Post
No differences in tuning?
Stephanie
None whatsoever.
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Old 07-16-2007, 01:34 PM   #76
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What downpipe were you using before?
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Old 07-16-2007, 03:50 PM   #77
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AVO.

I have a feeling the BEGI d/p helps the topend, but the AVO mani gives the better spool.
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Old 07-17-2007, 05:05 AM   #78
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i'm really liking my avo manifold as well. it seems to spool nice and fast, even tho i am using a pretty old non ball bearing t25. power delivery is great at the moment because the air is so cold here at the moment , seeing as it's the middle of winter. it was 6 degrees celcius today and the car felt fantastic. no real lag to speak of... i imagine it would be amazing with a newer fast spooling turbo.
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Old 07-17-2007, 06:46 AM   #79
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not to hijack but does anyone have comparative data on the BBR turbo manifold from the UK its a cast manifold that places the turbo very low on the block

where does it fit in between BEGI / AVO etc
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Old 07-17-2007, 12:51 PM   #80
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Quote:
Originally Posted by JasonC SBB View Post
AVO.

I have a feeling the BEGI d/p helps the topend, but the AVO mani gives the better spool.
Do you have a photo?
Thanks,
Stephanie
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