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Old 08-15-2006, 12:18 AM   #1
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Default Miata GReddy Dyno

I finished my project yesterday...

GReddy manifold, turbo and downpipe.
RX-7 intercooler with custom piping
Vortech FPR
14 deg base timing
OBX dual SS exhaust
NAPA cat
Wastegate tightened as far as she'll go.

146.5 rwhp and 144.8 rwtq
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Miata GReddy Dyno-p1010015.jpg   Miata GReddy Dyno-p1010016.jpg  
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Old 08-15-2006, 02:12 AM   #2
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huge jump in TQ! what are you using to control your timing? bipes?
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Old 08-15-2006, 03:03 AM   #3
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I got very similar results, but the dyno lost tach signal above 4500rpm. I got 149ft/lb at 4500rpm.
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Old 08-15-2006, 08:17 AM   #4
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Quote:
Originally Posted by JDMAflac
huge jump in TQ! what are you using to control your timing? bipes?
I have a Bipes, but I don't have it installed. Don't need it right now. She's running fantastic. I'm not getting any pinging even in the hot Alabama summer. The intercooler does the trick. I'm not going to have to use the Bipes until I start to run more boost.

We couldn't make it ping until we were almost at 9psi. We had to shut her down at that point, but you could see by the graph that it was on it's way to about 15 more horses.
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Old 08-15-2006, 11:34 AM   #5
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wtf, im over here playing it safe. 6 degrees @ 6psi with an intercooler
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Old 08-15-2006, 12:15 PM   #6
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Quote:
Originally Posted by 92Black&Tan
We had to shut her down at that point, but you could see by the graph that it was on it's way to about 15 more horses.
put a MBC on it and watch it grow further, at the same psi level.
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Old 08-15-2006, 08:19 PM   #7
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Finally, another dyno to feast my eyes on....nice numbers for just screwin down the wastegate. She's a torque monster. Probably because your not reducing your timing and the OBX is probably pretty restrictive.
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Old 08-15-2006, 10:02 PM   #8
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Quote:
Originally Posted by MiataNuTca
Finally, another dyno to feast my eyes on....nice numbers for just screwin down the wastegate. She's a torque monster. Probably because your not reducing your timing and the OBX is probably pretty restrictive.
Yeah... The low end on this car is absolutely fantastic. Who needs a supercharger when a GReddy can make 145 rwtq at 4500. What is amazing is that I picked up about 60 ft/lbs of torque on a car that only made about 86 ft/lbs to begin with N/A. That's about a 70% increase.

The best thing is that I can actually run my air conditioner without it feeling like I'm pulling a grand piano behind the car.

Regarding the OBX exhaust I think that it is pretty free flowing. I can definitly feel and hear and see on the boost gauge the turbo start to spool well before 3000 rpm. You can also see on the graph that it's making at least 12 more ft/lbs already at 3000 rpm.

Oh... And I definitly think the timing is a big factor. It was one of my goals... To not have to retard the base timing to some ridiculous number.
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Old 08-16-2006, 01:10 AM   #9
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i was under the impression that it was not safe to run 14* timing with just the base kit. right now I just have the base kit and bigger exhaust, stock injectors, 6* timing, and no engine management. I was going to get my IC then engine management then up the boost and timing to about 8psi then get bigger injectors... Is it "safe" for me to just adjust my timing to 14*???
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Old 08-16-2006, 01:20 AM   #10
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not unless you have an IC or timming control or WI, or, dont like your motor. He has an IC so he should be ok. i leave mine at 10 becouse it just feels better but that is just me one day i will see if a get more boosted power with more timming probably so but for now 10 degress is good for me. Not to shabby kid free up that exhaust and you should get some more hp.
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Old 08-16-2006, 03:00 AM   #11
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Quote:
Originally Posted by 92Black&Tan
Yeah... The low end on this car is absolutely fantastic. Who needs a supercharger when a GReddy can make 145 rwtq at 4500. What is amazing is that I picked up about 60 ft/lbs of torque on a car that only made about 86 ft/lbs to begin with N/A. That's about a 70% increase.

The best thing is that I can actually run my air conditioner without it feeling like I'm pulling a grand piano behind the car.

Regarding the OBX exhaust I think that it is pretty free flowing. I can definitly feel and hear and see on the boost gauge the turbo start to spool well before 3000 rpm. You can also see on the graph that it's making at least 12 more ft/lbs already at 3000 rpm.

Oh... And I definitly think the timing is a big factor. It was one of my goals... To not have to retard the base timing to some ridiculous number.

Its not fully spooled until about 4300 by the looks of the graph, thats pretty late. I used to see 12psi @ 3400rpm in 3rd gear. Also, I would retard the timing, but if you wanna risk it go right ahead, its dangerous though...
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Old 08-16-2006, 01:01 PM   #12
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Quote:
Originally Posted by AndyFloyd
Its not fully spooled until about 4300 by the looks of the graph, thats pretty late. I used to see 12psi @ 3400rpm in 3rd gear. Also, I would retard the timing, but if you wanna risk it go right ahead, its dangerous though...
I hear what you're saying and I'm hopefully going to install the Bipes this afternoon. Better safe than sorry.

Last edited by 92Black&Tan; 08-16-2006 at 01:13 PM.
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Old 08-16-2006, 01:46 PM   #13
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That will probably help with your spike on your a/f. Adding a MBC will help increase spool as well for about $10.
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Old 08-16-2006, 10:45 PM   #14
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Quote:
Originally Posted by braineack
That will probably help with your spike on your a/f. Adding a MBC will help increase spool as well for about $10.
Installed the Bipes today, because I was still getting some pinging during the hottest part of the day under full boost and full load. Wiring and setting the Bipes was not difficult, but you really have to pay attention. I used vampire clamps for 4 or the wires and then spliced the CAS wire into the Bipes. The way I see it is the Bipes basically intercepts the CAS signal and overrides it.

Right now it's just stuck in between the passenger seat and the transmission tunnel until I decide where to mount it. I set it for the most agressive settings. When I first tried to crank the car after the wiring it would turn over but not start, and I'm thinking... "How did I blow it, I paid close attention to every wire." I went around to the other side of the car to have a look and then realized that I forgot to plug the harness back into the ECU. "What an Idiot!"

Anyway got that resolved and warmed her up and proceeded to flog the crap out of her for a few redline runs and absolutely, positively, no pinging this time at all. Too bad the Bipes can't remove timing and then put it back in later on in the power curve when the fuel richens up a bit.
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Old 08-16-2006, 11:15 PM   #15
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Quote:
I used vampire clamps for 4
Please....to save a headache post later on........take off the vampire clamps and solder the wires properly! The vibrations from the car causes all kind of nightmares with those stupid things. Using these, and putting loctite on a grounding bolt are the worst electrical things you can do for your vehicle.....I've experienced this.
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Old 08-17-2006, 12:42 AM   #16
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Quote:
Originally Posted by 92Black&Tan
Too bad the Bipes can't remove timing and then put it back in later on in the power curve when the fuel richens up a bit.
that brings up a question......can the Emanage do that?
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Old 08-17-2006, 12:48 AM   #17
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Actually, the Bipes timing curve does add back some of the stock timing above 5000 RPM or so (it's been a while since I read the instructions, but they show the ignition retard curve).

The e-Mangle can retard timing as well, but these two can't add anything above the base timing as far as I know.
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Old 08-17-2006, 12:50 AM   #18
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emanage can add or subtract timing at 16 points +/- 20 degrees(numbers might be a little off)
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Old 08-17-2006, 05:56 AM   #19
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Quote:
Originally Posted by MiataNuTca
Please....to save a headache post later on........take off the vampire clamps and solder the wires properly! The vibrations from the car causes all kind of nightmares with those stupid things. Using these, and putting loctite on a grounding bolt are the worst electrical things you can do for your vehicle.....I've experienced this.
Can I use one of those solder thingies that you can solder with one second and then touch to you finger the next second and not bet burned?
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Old 08-17-2006, 05:58 AM   #20
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Quote:
Originally Posted by bripab007
Actually, the Bipes timing curve does add back some of the stock timing above 5000 RPM or so (it's been a while since I read the instructions, but they show the ignition retard curve).

The e-Mangle can retard timing as well, but these two can't add anything above the base timing as far as I know.
Huh... That's interesting... Maybe I should actually take a look at the dvd/CD that came with the thing now that I actually have it on my car.
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