My dyno thread, 7 psi Greddy - Miata Turbo Forum - Boost cars, acquire cats.

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Old 02-07-2009, 07:06 PM   #1
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Default My dyno thread, 7 psi Greddy

149.9 WHP/134.2 ft/lbs

The Dyno: Power Curve Dyno
Dyno Dynamics 2WD dyno

Current Specs:
Stock 1.6 Motor w/153K miles
Greddy turbo with manual boost controller
Greddy manifold ceramic coated and port matched
2.5 RM DP
2.5 FM/JR Cat
2.5 Enthuza Exhaust
TDR Intercooler
BEGI AFPR
Bipes ACU
Lightened Stock Flywheel
15 inch rotas
Stock AFM
Stock FP
1.6 injectors <--maxed out

I'm running lean (>14.0 between 4400 rpm and 5000). Might get some bigger injectors for the time being. I wanted to get a baseline to see what I was running right now.

To do list: MS, WB and torsen.

Pictures in a couple days.

Chris
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Old 02-07-2009, 07:17 PM   #2
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PUT SOME BIGGER INJECTORS IN THERE ASAP! those AFRs are dangerous. and you should be able to turn the wick up a bit for more power.
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Old 02-07-2009, 07:33 PM   #3
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in the least add more fuel pressure with the AFR...
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Old 02-07-2009, 08:06 PM   #4
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It's maxed, I am turning down the boost.

Chris
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Old 02-07-2009, 09:11 PM   #5
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I have some NB injectors at my house in Dallas that you can have on the free. You should join the MS crew and get 550's though.
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Old 02-07-2009, 09:54 PM   #6
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My personal experience was that 6 psi with proper AFR's is faster than 7 or 8 psi with **** AFR's. Also, though in a way you are right about the injectors, what you are really maxing out is the fuel pump. Our pumps just can't push nearly enough fuel pressure to make the 230cc or whatever injectors flow enough. Unless you get some on the free, don't get 1.8 injectors - wait for MS so you can get some proper squirters. FWIW, I can get 11:1 AFR's at 6.5 psi using megasquirt if I so choose an I am currently on the stock injectors too.. though I have a suspicion that my pump is a freak and somehow is doing much better than it should for the miles it has.. but anyways, +1 on getting MS asap because adjusting with a AFPR = lose.

Without changing anything except for getting a proper fuel supply, that setup at that psi should be ~170 rwhp.

-Ryan
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Old 02-10-2009, 12:24 AM   #7
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Quote:
Originally Posted by hustler View Post
I have some NB injectors at my house in Dallas that you can have on the free. You should join the MS crew and get 550's though.
I'll take you up on that.


My dyno plot:

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Chris
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Old 02-10-2009, 01:01 AM   #8
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I would've expected a little more out of it. I don't have a dyno chart on me, but I turbo'd a friends 92 miata with the greddy kit. Customer intercooler install, emanage, and turbosmart recirc BOV & manual boost controller. Also has the Begi downpipe, stock injectors, and the stock fuel riser the kit came with. The greddy wastegate has trouble holding boost, but a about 7.5PSI, he made 164.9 RWHP, and 162 lb torque, and that was on the same dyno (dyno dynamics). Air/fuel readings were quite a bit better then that too.
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Old 02-10-2009, 01:04 AM   #9
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Quote:
Originally Posted by hustler View Post
You should join the MS crew and get 550's though.
.
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Old 02-16-2009, 04:13 PM   #10
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The stock 1.6 AFM is hurting power, too. A few more mods and you will have a big improvement in power.
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Old 02-23-2009, 04:14 PM   #11
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I forgot your injectors last night...but maybe you can get them sooner than later.
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Old 11-03-2011, 01:27 PM   #12
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Quote:
Originally Posted by hustler View Post
I forgot your injectors last night...but maybe you can get them sooner than later.
I have a 91 with 1.6 motor.
Greddy TD04
Racing Mazda DP
Flebay IC
MS PnP
Walbro Fuel pump
Stock injectors
7 psi

And no clue what power it makes

I have the stock CAT. It has a tiny inlet and is likely hurting my spool up time and maybe peak power ...
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Old 11-30-2011, 11:38 PM   #13
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holy pumped thread batman
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Old 12-01-2011, 06:55 AM   #14
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Quote:
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holy pumped thread batman
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Old 12-01-2011, 09:15 AM   #15
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More concerning than the pumped thread is the stock injectors and 7psi.
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