1.8L DIY Turbo Set-up with BorgWarner EFR-6258 - Page 2 - Miata Turbo Forum - Boost cars, acquire cats.

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Old 04-10-2011, 10:59 AM   #21
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Going to an individual runner collector-style manifold would likely improve performance across the board. Earlier spool and greater peak power would be evident.

Nice car.
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Old 04-10-2011, 04:35 PM   #22
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Quote:
Originally Posted by derber View Post
Faeflora,
I'll try to snap some good pics of the exhaust. Most of the hardware was from Summit Racing. Part numbers of the specific components can be found in my parts list.

8. Exhaust Custom w/ 2 Resonators
a. Custom 3.5 3.0 Downpipe
b. Resonator #1 (Summit p/n WLK-24238)
c. Resonator #2 (Summit p/n WLK-24219)
d. Flex Pipe (Summit p/n JEX-FLX3010B)
e. Exhaust Wrap 1 (Summit p/n DEI-010120)
f. O2 exhaust bungs (Summit p/n 35-4005)
g. Heatshield for Underside of Hood (Summit p/n DEI-010401)
h. Gasket, 3-bolt exhaust (Summit p/n SUM-610130)
i. Flange, 3-bolt exhaust (Summit p/n SUM-G4761)
Thanks for the information and part numbers!!!
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Old 04-10-2011, 05:52 PM   #23
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Originally Posted by sixshooter View Post
Going to an individual runner collector-style manifold would likely improve performance across the board. Earlier spool and greater peak power would be evident.

Nice car.

Yep. Need to spend some money on a decent manifold to do that turbo justice.
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Old 04-10-2011, 06:25 PM   #24
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Yep. Need to spend some money on a decent manifold to do that turbo justice.
I believe he could net 30 whp at least across the board if he switched to a ramhorn style manifold. Throw E85 in the mix and few more pounds of boost could really wake things up.
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Old 04-11-2011, 12:57 AM   #25
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BorgWarner is the new shiz, good numbers.
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Old 04-11-2011, 08:49 AM   #26
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Got me motivated to get my **** done - Good job!
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Old 04-11-2011, 09:24 AM   #27
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BorgWarner is the new shiz, good numbers.
I mean, everyone knew this in the past. They just don't sell/market to the aftermarket crowd like Garrett does.
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Old 04-15-2011, 03:04 AM   #28
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is there any link to the build for this as i myself am doing an efr 1.8 within the next month here or maybe even you could pm me your email- really looking forward to buying and boosting a miata
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Old 04-15-2011, 06:59 AM   #29
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Yes, I fully agree with all the comments regarding manifold design. My preference would be an individual runner exhaust manifold feeding a twin-scroll EFR turbocharger.
This very well could be my project next winter!
Thanks for all the feedback.
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Old 04-15-2011, 07:00 AM   #30
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BTW... I plan to bring the car to the Mitty this year. Feel free to stop by and say hello!
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Old 04-15-2011, 07:23 AM   #31
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Epic post thanks for trying the EFR-6258, why made u pick that over the 6255? not bitching just interested
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Old 04-17-2011, 03:06 PM   #32
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Great post, great info, great contribution. Thank you.
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Old 04-21-2011, 11:24 AM   #33
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Very well put together, may I ask what either of those turbochargers ran you price wise and where you picked them up at?
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Old 04-21-2011, 12:53 PM   #34
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You had me at "Borg Warner". Also, are you worried about your internals at all? I got my tuner to stop at 250whp cus I haven't touched my internals and the general consensus was that you shouldn't go above 250 on stock internals. I was wondering if its ok to go higher under certain conditions?
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Old 04-21-2011, 01:02 PM   #35
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Quote:
Originally Posted by derber View Post
BTW... I plan to bring the car to the Mitty this year. Feel free to stop by and say hello!
Where at the Mitty are you going to be at? There is a large group of miataturbo people that will probably be hanging out around the DiyAutoTune tent all Saturday.
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Old 05-14-2011, 07:26 PM   #36
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Quote:
Originally Posted by Oni View Post
Epic post thanks for trying the EFR-6258, why made u pick that over the 6255? not bitching just interested
I actually did test both the 6258 and the 6255. While the 6255 has slightly better inertia, the 6258 has superior turbine efficiency. In the end the spool was the same and the 6258 was good for about 10+ more power on the top end.
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Old 05-14-2011, 07:28 PM   #37
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Quote:
Originally Posted by mx5autoxer View Post
You had me at "Borg Warner". Also, are you worried about your internals at all? I got my tuner to stop at 250whp cus I haven't touched my internals and the general consensus was that you shouldn't go above 250 on stock internals. I was wondering if its ok to go higher under certain conditions?
I share all your same concerns! Currently looking for a back-up engine... just in case.
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Old 05-14-2011, 07:30 PM   #38
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Where at the Mitty are you going to be at? There is a large group of miataturbo people that will probably be hanging out around the DiyAutoTune tent all Saturday.
I wish I would have seen your post prior to the Mitty. I parked the car in the Mazda corral with the hood up. I would have like to have seen some other turbo miatas.
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Old 05-23-2011, 10:27 AM   #39
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Me like it very much the downpipe design, looks freakin badass.

Kudos for the info and high resolution pictures. It seems you still have stock internals...?!
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Old 05-27-2011, 02:47 AM   #40
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Sweet EFR setup, I've really been thinking about doing a 94 miata build for some time now but I just bought a 08 mazdaspeed3 I'll have to put those plans on hold for now.

Your profile says western NC, I'm from the Asheville area myself if you wouldn't mind I'd like to check it out sometime.
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