99mx5 EFR build - Page 7 - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


Build Threads Building a motor? Post the progress here.

Reply
 
 
 
LinkBack Thread Tools Search this Thread
Old 03-17-2012, 05:34 PM   #121
Senior Member
Thread Starter
iTrader: (13)
 
Join Date: Oct 2006
Location: Las Cruces, NM
Posts: 1,301
Total Cats: 181
Default

I took it out for a test and tune at the local track (Arroyo Seco Raceway).
It was a bit rich at the top and I leaned it out. AFRs were consistant all day. The whole setup worked flawlessly. It was limited to around 10PSI with the Forge wastegate actuator directly hooked up without a boost controller. On occasion, I would hit fuel cut at around 6600 RPM. I may just raise the limit a bit in the ECU to avoid the cut.

The boost was virtually instantaneous and power delivery was linear and easy to control. The turbo was always spooled coming out of the turns. Overall, it was great! I definitely feel that I have achieved what I wanted when building this system. Thanks to Abe at ARTech for the awesome parts fabrication, Rick for his help and support and for the forums with all the knowledge I learned from it, Brain and Reverant for the ECU build and support, Hustler for letting me try his car and influencing me to start this project and everyone else that had great advice.

Here is a video of one of the sessions.

99mx5 is offline   Reply With Quote
Old 03-17-2012, 07:15 PM   #122
Newb
iTrader: (1)
 
Join Date: Nov 2011
Posts: 16
Total Cats: 0
Default

party time. now you can build mine.

Last edited by mrluckys; 03-17-2012 at 10:35 PM.
mrluckys is offline   Reply With Quote
Old 03-17-2012, 08:27 PM   #123
Senior Member
Thread Starter
iTrader: (13)
 
Join Date: Oct 2006
Location: Las Cruces, NM
Posts: 1,301
Total Cats: 181
Default

Quote:
Originally Posted by mrluckys View Post
Party time. Now you can build mine.
FTFY

Lets do it! I still have spares you can use.
99mx5 is offline   Reply With Quote
Old 03-18-2012, 11:31 PM   #124
Elite Member
iTrader: (5)
 
Join Date: Dec 2010
Location: Raleigh, NC
Posts: 1,969
Total Cats: 50
Default

Congrats Ari! I am betting your buddies will have a much harder time catching you now
Seefo is offline   Reply With Quote
Old 03-19-2012, 01:07 AM   #125
Senior Member
Thread Starter
iTrader: (13)
 
Join Date: Oct 2006
Location: Las Cruces, NM
Posts: 1,301
Total Cats: 181
Default

Thanks Joe! A couple of them already told me they its harder to pull away from me on the straights.
99mx5 is offline   Reply With Quote
Old 03-19-2012, 01:10 AM   #126
Elite Member
iTrader: (24)
 
Join Date: Jul 2007
Location: Cypress, TX
Posts: 3,778
Total Cats: 35
Default

Turbo sounds awesome!
Bryce is offline   Reply With Quote
Old 03-19-2012, 03:52 AM   #127
Senior Member
Thread Starter
iTrader: (13)
 
Join Date: Oct 2006
Location: Las Cruces, NM
Posts: 1,301
Total Cats: 181
Default

Thanks Bryce. BTW, I have the Forge wastegate actuator with the softest spring (the green 5+ PSI spring) directly connected without the MBC and I still hit 10PSI around 6600 RPM. After the test and tune day at the track, I set the ECU to cut fuel at 175kpa (around 11PSI). I'm hoping that it will allow me to have a little more headroom to hit rev cut before overboost fuel cut.

I also plan to try a softer spring in the MBC to delay opening of the wastegate until around 6 - 7PSI. Due to the quick spool, it's probably unnecessary, but I'm curious to see what the change will be. I'd expect to overboost even more, but its easy to test it.
99mx5 is offline   Reply With Quote
Old 03-20-2012, 08:22 AM   #128
Junior Member
 
muoto's Avatar
 
Join Date: Jun 2008
Location: Finland
Posts: 382
Total Cats: 60
Default

Is that beltronics radar detector?

I'm looking forward to dyno results
muoto is offline   Reply With Quote
Old 03-20-2012, 02:57 PM   #129
Senior Member
Thread Starter
iTrader: (13)
 
Join Date: Oct 2006
Location: Las Cruces, NM
Posts: 1,301
Total Cats: 181
Default

It is. I forgot to remove it.

I tested my MBC and found that the bleed hole is too big to allow the wastegate actuator to open. I will reduce the size of the hole and test again.
99mx5 is offline   Reply With Quote
Old 03-24-2012, 03:21 PM   #130
Senior Member
Thread Starter
iTrader: (13)
 
Join Date: Oct 2006
Location: Las Cruces, NM
Posts: 1,301
Total Cats: 181
Default

Here's the car and trailer ready for the first track event this weekend at ASR.
Attached Thumbnails
99mx5 EFR build-img_20120314_191323.jpg  
99mx5 is offline   Reply With Quote
Old 03-25-2012, 11:38 PM   #131
Senior Member
Thread Starter
iTrader: (13)
 
Join Date: Oct 2006
Location: Las Cruces, NM
Posts: 1,301
Total Cats: 181
Default

LOL!!! Time for a rebuild! It just gave away with a clunk and it was all over.
Uneventful and not even at full bore. I only ran two laps before it popped and my second lap was the fastest time in my class.

Carnage pics to follow.
Attached Thumbnails
99mx5 EFR build-465316_282757205134877_100002017996906_660082_310980421_o.jpg  
99mx5 is offline   Reply With Quote
Old 03-25-2012, 11:39 PM   #132
Elite Member
iTrader: (24)
 
Join Date: Jul 2007
Location: Cypress, TX
Posts: 3,778
Total Cats: 35
Default

:(
Bryce is offline   Reply With Quote
Old 03-25-2012, 11:42 PM   #133
A living god
iTrader: (23)
 
viperormiata's Avatar
 
Join Date: Aug 2008
Location: Key West
Posts: 5,967
Total Cats: 231
Default

Yo Ari, I feel you bro
viperormiata is offline   Reply With Quote
Old 03-26-2012, 01:05 AM   #134
Senior Member
Thread Starter
iTrader: (13)
 
Join Date: Oct 2006
Location: Las Cruces, NM
Posts: 1,301
Total Cats: 181
Default

Here's how I brought it back home.
Attached Thumbnails
99mx5 EFR build-img_20120325_180444.jpg   99mx5 EFR build-img_20120325_180954.jpg  
99mx5 is offline   Reply With Quote
Old 03-26-2012, 01:12 AM   #135
Elite Member
iTrader: (24)
 
Join Date: Jul 2007
Location: Cypress, TX
Posts: 3,778
Total Cats: 35
Default

Trailerception!
Bryce is offline   Reply With Quote
Old 03-26-2012, 02:50 AM   #136
Cpt. Slow
iTrader: (25)
 
curly's Avatar
 
Join Date: Oct 2005
Location: Oregon City, OR
Posts: 11,812
Total Cats: 479
Default

Lul wat?

Stock internals? Don't wanna look back.
curly is offline   Reply With Quote
Old 03-26-2012, 03:50 AM   #137
Elite Member
iTrader: (10)
 
soviet's Avatar
 
Join Date: Jan 2010
Location: VA
Posts: 3,514
Total Cats: 253
Default

so 10psi on EFR6258 vents your block?
lol...
soviet is offline   Reply With Quote
Old 03-26-2012, 03:52 AM   #138
Elite Member
iTrader: (10)
 
soviet's Avatar
 
Join Date: Jan 2010
Location: VA
Posts: 3,514
Total Cats: 253
Default

Also I want to see them bent rods
soviet is offline   Reply With Quote
Old 03-26-2012, 04:14 AM   #139
Senior Member
Thread Starter
iTrader: (13)
 
Join Date: Oct 2006
Location: Las Cruces, NM
Posts: 1,301
Total Cats: 181
Default

Gonna make a rod keychain like Dem LOL!
99mx5 is offline   Reply With Quote
Old 03-26-2012, 01:15 PM   #140
Tour de Franzia
iTrader: (6)
 
hustler's Avatar
 
Join Date: Jun 2006
Location: Republic of Dallas
Posts: 29,008
Total Cats: 333
Default

Hopefully the turbo isn't fuxored. I don't know why you guys don't start with forged rods and pistons. Add SS valves for us track guys. Do it once, do it right, keep it white.
hustler is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
LucaCarMods's Boosted Dutch Miata Build! LucaCarMods Build Threads 11 02-14-2016 06:13 AM
WTB MP62 (Hotside) (NB2) Rick02R WTB 3 01-03-2016 07:18 PM
Is my swirl pot design okay? FrankB Race Prep 10 10-02-2015 09:00 PM
Bad head gasket or ? shooterschmidty Engine Performance 8 09-30-2015 10:28 PM
Image resizer concealer404 Front Desk 3 09-29-2015 12:41 PM


Tags
6258, artech, efr, ramhorn

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 06:10 PM.