301.5 WHP 1.6 Liter 15 PSI - Miata Turbo Forum - Boost cars, acquire cats.

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Old 09-02-2008, 07:20 PM   #1
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Default 301.5 WHP 1.6 Liter 15 PSI

I posted a few days ago on M.net, I made 277 whp but come to realize I wasn't making much boost 11-12 pounds due to the big turbo not fully spooling on the Dynojet due to no load on the motor. Posted is official dyno sheet with a load bearing dyno at 15 pounds of boost. Please note it was only run to 6300 RPM the motor can rev to 8,000 easily but didn't make much more power above 6,500 RPM.
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Old 09-02-2008, 07:23 PM   #2
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Um, you gotta like give us more info. Like everything you did to the motor. Start from the beginning.
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Old 09-02-2008, 07:33 PM   #3
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Motor
Wiesco 8.0 Comp Pistons 2+ over bore
Carrillo H-Beam Rods
Knife Edged Crank
ARP bolts everywhere
Cosmetic Head Gasket

Head
Port Polished Head/Port matched intake manifold
Custom Crowler Cams
FM spring set ti retainers
Ferrera Valves
5 Angle Valve Job

Turbo
Garrett 60-1 with .48 Hotside
2.5 Intercooler piping
Tial BOV
Ebay Intercooler
Tial 38 MM external wastegate
ETD manifold
3" downpipe/exhaust

ECU/FUEL

AEM EMS 3.5 Bar Map
IAT sensor
AEM wideband
750 CC RC injectors
Flyin' Miata fuel rail
Aeromotive Fuel Pressure Regulator
225 LPH Walbro fuel pump

Drivetrain
Spec 3+ clutch
Cusco LSD 1.8 Rear end new axles
New transmission


ETC ETC I know I forgot a lot but that about sums it up...
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Old 09-02-2008, 07:38 PM   #4
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damn that thing is slow to spool but nice peak numbers.
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Old 09-02-2008, 07:42 PM   #5
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Paul you have now been beet. Gonna have to like adjust the valves or something to get ahead.
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Old 09-02-2008, 07:43 PM   #6
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Graph from another dyno session shows boost, it spools a little faster now though. This was when I had a warped exhaust manifold. It's more of a drag/highway car than a auto-x so the lag doesn't bother me...im used to it ;-D
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Old 09-02-2008, 07:52 PM   #7
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Nice numbers. I bet that's fun to drive. Video!
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Old 09-02-2008, 07:56 PM   #8
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I'll try to get some clips tonight, i'm going grocery shopping for some civics.... :-D
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Old 09-02-2008, 08:10 PM   #9
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From the look of that dyno graph its almost like a baby supra.
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Old 09-02-2008, 08:24 PM   #10
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unless you're planning to do a lot more it seems that turbo is too big for your application, meaning reduced powerband from slow late spool
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Old 09-02-2008, 08:27 PM   #11
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I plan on 450+ whp out of my 1.6 not sure if that's a record or not? But next is a race gas tune 30+ psi and a new intake manifold. An the turbo does help a lot with the power I make, most don't make 300+ with 15 pounds from a 1.6 that I know of. Works for me :-D
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Old 09-02-2008, 08:37 PM   #12
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What's the engine management? EBC might get you spooling a little quicker. That's pretty dramatic lag.
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Old 09-02-2008, 08:40 PM   #13
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AEM EMS, what is EBC if you don't mind me asking. It's not any different than most high horsepower Supras/Civics/Evos, lag is great I have no traction issues what so ever.
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Old 09-02-2008, 08:50 PM   #14
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Electronic boost control.

Basically a computer controlled valve between the compressor outlet and wastgate can. With EBC you can usually get a bit quicker spool because you can set it to let no pressure through to the can at all until you approach your target boost, keeping that wastgate locked tightly shut till the last moment.
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Old 09-02-2008, 08:52 PM   #15
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electronic boost controller?
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Old 09-02-2008, 08:55 PM   #16
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I have one, the Greedy E-01. Not sure how to really mess with it, it's confusing as hell. If I mess with it do I need to retune? I let the tuners set it up. I have the "Set" at 10 an the "Gain" at 50. The gain is what makes me make 15 pounds, the set is what holds the wastegate closed, but I heard if you set them too close it with cause a boost spike.
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Old 09-02-2008, 08:58 PM   #17
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If you change the settings you will have to retune because you will be making more boost lower and therefor hitting areas of your maps that you haven't hit/tuned before
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Old 09-02-2008, 09:02 PM   #18
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Thanks for the input, but im satisfied with my lag. I've grown to love it, when a mustang pulls on you for a bit; then when he thinks you lost you slowly real him in...I like the looks on their faces as i'm passing them :-D
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Old 09-02-2008, 09:05 PM   #19
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I prefer not to have to look at them and let them look at my tail lights.
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Old 09-02-2008, 09:07 PM   #20
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Yeap. I only wash/wax the back half of my car.
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