Built MSM w/6258 - Miata Turbo Forum - Boost cars, acquire cats.

Built MSM w/6258

Old 09-29-2014, 11:12 AM
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Engine
BP4W Mazdaspeed .020 over
BP4W ported head
Eagle H-Beam Rods
Wiseco 83.5mm 8.5:1
Boundary Engineering Street/Strip oil pump
SuperMiata harmonic damper
ARP head/main studs
ACL Race bearings
Supertech Valve Spring kit
VICS delete

Turbo
ARTech custom top-mount manifold
Swaintech White Lightning manifold coating
ARTech 3” v-band downpipe catless
BorgWarner EFR6258 turbo
CorkSport 80mm Catback
AN-4 feed
AN-10 drain

Cooling
TrackSpeedEngineering crossflow radiator
FlyinMiata coolant re-route
FlyinMiata Oil cooler kit
Fab9Tuning 550HP Intercooler
SPAL 14” curved fan
DeRale PS cooler

Electronics
Megasquirt 2X
Fab9Tuning COP kit
AEM EUGO WBo2
Autometer Boost gauge
FuelInjectorClinic 775cc ev14 injectors
Walbro 225lph pump

Drivetrain
Competition 13lb flywheel
FlyinMiata Stage2 clutch kit
PuddyMod Stage2 differential (cryo treated option)
Mazda “Aussie” 3.63 ring and pinion
Energy Differential mounts
SuperMiata SS Clutch line
MiataRoadster SS kit
Mazdaspeed competiton motor mounts
949Racing Driveshaft

Suspension
Tein FLEX 7kg/6kg Coilovers
RacingBeat 1.125” front sway bar
RacingBeat sway reinforcement kit
RacingBeat adjustable sway links
Hawk HPS pads
SuperMiata SS Brake lines
HardDog Hardcore Double Diagonal Rollbar

Wheels And Tires
949Racing 6UL gen3 15x9 Nicke
225/45/R15 Hankook Ventus RS3 tires
Forged lugs

Tuning by Ken Hill of Oracle tuning. This is an end of the day pull at 17psi with an MBC. We need to run another wire from the MS to the EBC on the EFR to get it to work. The hope with this is to run 10psi 1st gear, 14psi 2nd gear, 17psi 3rd to 5th, and maybe 16psi in 6th to be kinder to the transmission. Right now 1st and 2nd are fairly useless. I can get grip in 2nd if I focus on my foot, but I can feel the rear end wanting to move around the whole time.
Attached Thumbnails Built MSM w/6258-miatadyno_zpsa49f1d04.jpg  
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Old 09-29-2014, 11:22 AM
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Nice tq curve any videos?
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Old 09-29-2014, 08:39 PM
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Not yet but soon!
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Old 09-29-2014, 09:24 PM
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200hp to go to justify the 550hp intercooler :P
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Old 09-29-2014, 09:25 PM
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Now *that's* impressive spoolup if the turbo is indeed capable of 325 hp+

Last edited by JasonC SBB; 09-30-2014 at 02:57 PM.
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Old 09-29-2014, 10:06 PM
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Pretty impressive given the lack of EBC.
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Old 09-29-2014, 10:13 PM
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What fuel are you running 91 or 93? Any consideration in moving to E85? This gives me more motivation to finish my build! Congrats!
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Old 09-29-2014, 10:29 PM
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Originally Posted by Savington View Post
Pretty impressive given the lack of EBC.
the difference in spool with a ball/spring mbc vs an ebc is really small
I've yet to see plots that can show consistent significant gains
still doesn't change that this is a fantastic plot though
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Old 09-29-2014, 10:50 PM
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Heyyyy this looks familiar! Glad to see you are on here haha
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Old 09-29-2014, 11:21 PM
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Thanks everyone. This is with 93 octane. We only have 1 e85 pump near me and it's in the city almost 20 miles away. With e85 economy and the size of a miata tank its not really practical. I don't really want to get Into flex fuel cause of cost right now and if anything I would more likely upgrade to a 6758 down the road

Last time I really was able to floor it it was making 220/200. That was about 1.5-2 years ago and I've been driving a 97 civic since so the level of power is just nuts right now.

I am 100% confident it can make over 325. 13-15psi picked up 25whp, 15-17psi picked up just 11, but again, end of the day runs with hottest everything. The turbo can easily do 20psi which should hit 325 or higher.

Here is a shot of the engine bay as it sits. The catchcan is in the same spot now but routed differently. There's just 2 hoses from either side of the VC going to a vented can. The intake manifold barb is just closed off.


I've been trolling other dyno charts and see that on the EFR cars the curve is a good bit more vertical than with other turbos. The power delivery is not immediate but for the power it makes the spool is nuts.
Attached Thumbnails Built MSM w/6258-e730ed73-860c-4508-8d91-9fa35853ea24_zps81b557d8.jpg  

Last edited by Mazdaspeeder; 09-30-2014 at 12:45 AM.
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Old 09-30-2014, 03:04 PM
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13-15psi picked up 25whp, 15-17psi picked up just 11, but again, end of the day runs with hottest everything. The turbo can easily do 20psi which should hit 325 or higher.
Can you show the dyno plots of 13, 15, and 17 psi? And the boost curve too?
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Old 09-30-2014, 03:09 PM
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Originally Posted by JasonC SBB View Post
Can you show the dyno plots of 13, 15, and 17 psi? And the boost curve too?
I only have the graph for 17psi which is in the first post. I don't have a boost curve to show
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Old 09-30-2014, 03:11 PM
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Was ignition timing and fueling tuned for the 13 psi run? Or was 13 psi untuned, then 15 psi was?
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Old 09-30-2014, 03:15 PM
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Originally Posted by JasonC SBB View Post
Was ignition timing and fueling tuned for the 13 psi run? Or was 13 psi untuned, then 15 psi was?
I'm not sure. I took the car to a respectable tuner, he called me and said that he was at 15psi and made 300whp which was a 25whp gain from 13psi. He said he would take it up another 2psi and that's the final 311whp figure. He did some street driving after the dyno as well so I think he has everything correctly.

I left my car for tuning for 2 weeks, turned into 3 because of a hardware problem. He got plenty of tuning time in.
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Old 10-03-2014, 01:24 PM
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Jason, fuel and timing were optimized at 190, 205 and 220kPa. At 190kPa the engine made 275hp, at 205kPa it made 300. Encouraged by the power gain from 190 to 205, I suggested to Mazdaspeeder we go to 220kPa. At this level the engine made 311hp.
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Old 10-03-2014, 02:20 PM
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Alex, you may want to consider making sme sort of heatshield for your brake master cylinder or atleast flush out for some dot4 fluid. Streetcar so it's not a huge concern, but I'd be worried about heat.
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Old 10-04-2014, 12:48 PM
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Originally Posted by Mazduh View Post
Alex, you may want to consider making sme sort of heatshield for your brake master cylinder or atleast flush out for some dot4 fluid. Streetcar so it's not a huge concern, but I'd be worried about heat.
All the brake lines near down pipe are sleeved and or wrapped. The fluid is ATE Super Blue. Think it will be ok?
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Old 10-04-2014, 03:16 PM
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At least use shiny tape from Home Depot Racing to put on the reservoir facing the hot bits. Think of the manifold and turbo as glowing; anything the glow lights up, will get very hot.
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Old 10-04-2014, 03:16 PM
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Originally Posted by Ken Hill View Post
Jason, fuel and timing were optimized at 190, 205 and 220kPa. At 190kPa the engine made 275hp, at 205kPa it made 300. Encouraged by the power gain from 190 to 205, I suggested to Mazdaspeeder we go to 220kPa. At this level the engine made 311hp.
Hmm I wonder what the reason for the diminishing returns is. Turbo choking? Exhaust system?
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Old 10-04-2014, 05:42 PM
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Originally Posted by JasonC SBB View Post
Hmm I wonder what the reason for the diminishing returns is. Turbo choking? Exhaust system?
My guess is it was just heatsoaked from the pulls before-hand. The turbo and exhaust all have the flow to support, its a 3" outlet, 3" downpipe, 3.15" exhaust.
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