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Definitive Greddy Turbo Fixes - Here they are

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Old 12-07-2007, 09:12 AM
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does anyone elses fi car break the tires loose with just the throttle in 2nd gear? oem size tires. Not bragging here--just learning. I shifted from a breath on full throttle 1st gear--to 2nd, let the clutch engage then floored it. Dang tires broke loose (on interstate entrance going downhill--no sand or anything) for a second until traction control activated. I didnt expect that. 1st gear yea --anytime, but 2nd gear?
outside temps were in the low 40's
oscd
Old 12-07-2007, 09:21 AM
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With DSC off - it was hard for me not to break it loose in 2nd and sometimes 3rd when getting on the freeway - after almost going sideways - I left it on! I am not a good enough driver to get crazy yet.

Fun stuff eh?
Old 12-07-2007, 09:26 AM
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My car does the same. It's a nice problem to have
Old 12-07-2007, 10:35 AM
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Mine will let loose in 3rd if I just stand on it.
I was getting on the 10 just a few minutes ago and I was tooling along in the CD lane, doing about 40 in 3rd.
Once I passed the gore, I just floored it and it stepped out.
I wish I had the TCS off!
Old 12-27-2007, 06:48 PM
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This will be my last question about the fix#2 because I will be performing this fix tomorrow.

Would it make any difference to tap the charge pipe (just before the throttle body) instead of the turbo outlet pipe?
Old 12-27-2007, 07:05 PM
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You want the signal to come from as close to the turbo as possible.
Otherwise, the WG will flutter as the cold side piping pumps up and blows off over and over again, several times a second.
Its fairly mild, but it will surge the compressor a bit, which you want to avoid.
Old 12-27-2007, 07:22 PM
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Cool

You want the signal to come from as close to the turbo as possible. Otherwise, the WG will flutter as the cold side piping pumps up and blows off over and over again, several times a second.
Its fairly mild, but it will surge the compressor a bit, which you want to avoid.


That's good to know - as a turbonewb I was going to take the WG signal from downstream of the intercooler - to regulate an 'actual' 7 psi at the throttlebody.....


S
Old 12-27-2007, 07:44 PM
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Nah. You want the turbo to regulate itself. The .00001 second of "lag" you create by doing it the right way won't hurt you.
Old 01-01-2008, 02:13 PM
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I did the fix#2 today but I ran into problems.

In the instructions on the 1st page it says to buy a 1/8" barb to 1/8" NTP fitting with some 1/8" vacuum hose. Well the fitting on my boost solenoid is 3/16" barb to 1/8" NTP fitting.

So really I needed another 3/16" barb to 1/8" NTP fitting tapped into the turbo outlet pipe with 3/16" vacuum hose.

Also the vacuum cap for the intake manifold is not 1/8" either. That is also 3/16"

Besides that it was easy.
Old 01-01-2008, 09:31 PM
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Most silicone hose will stretch to fit.
Old 01-02-2008, 12:26 AM
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Originally Posted by MazdaManiac
Most silicone hose will stretch to fit.
Yeah, that's what I did until I can get the right fittings and vacuum line tomorrow.

For whatever reason, when I try to rev to 9,000rpm it stops around 7,000 and sounds like I am hitting a rev limiter.

Wierd.
Old 01-02-2008, 02:14 AM
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Originally Posted by turborx8
For whatever reason, when I try to rev to 9,000rpm it stops around 7,000 and sounds like I am hitting a rev limiter.


Uh, don't do that. What are your A/Fs when that happens? Any weird noises?
Old 01-02-2008, 07:09 AM
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Originally Posted by MazdaManiac


Uh, don't do that. What are your A/Fs when that happens? Any weird noises?

My AFR are always below 11.5 and no weird noises. I am thinking the solenoid is acting weird due to the bottleneck on the tiny 1/8" vacuum line because that's the only thing that has changed.

I will replace the fitting and hose with the right size and try again. If it does the same thing, I will take a video.

Last edited by turborx8; 01-02-2008 at 07:22 AM.
Old 01-02-2008, 09:41 AM
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The boost control solenoid has nothing to do with your rev limit.
Old 01-02-2008, 11:43 AM
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Originally Posted by MazdaManiac
The boost control solenoid has nothing to do with your rev limit.
I just replaced the NPT fitting and I also used 3/16" vacuum hose and it made no difference.

Here is a short video of my rev limit problem. It feels like my wastegate is going nuts.

http://www.turborx8.ca/movies/problem.mpg

Last edited by turborx8; 01-02-2008 at 11:48 AM.
Old 01-02-2008, 11:58 AM
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Looks like a rich misfire, but it could be an ignition coil or (less likely) your CAT.
10:1 at low-load is not always lit properly by OE coils.
Old 01-02-2008, 12:25 PM
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Originally Posted by MazdaManiac
Looks like a rich misfire, but it could be an ignition coil or (less likely) your CAT.
10:1 at low-load is not always lit properly by OE coils.
I am thinking it might be the coils too because the engine dies on me when I clutch in and coast to a red-light at least once per day. It also takes 2-3 seconds to start the engine when it's cold.

Looks like I will be ordering the mazsport ignition solution sooner than I thought.

Should I replace the spark-plugs 1st?
Old 01-02-2008, 12:32 PM
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Plugs can't hurt, but probably won't make a difference unless they are totally fried.
Your vacuum looks good, so your compression is probably OK.
Old 01-02-2008, 12:43 PM
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Originally Posted by MazdaManiac
Plugs can't hurt, but probably won't make a difference unless they are totally fried.
Your vacuum looks good, so your compression is probably OK.
Thanks once again for your help.

I am gonna have to start paying you soon for all this technical support. lol
Old 01-03-2008, 05:15 PM
  #370  
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Originally Posted by turborx8
Thanks once again for your help.

I am gonna have to start paying you soon for all this technical support. lol
I owe him SO much beer....
Old 01-03-2008, 07:03 PM
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Mmm. Beer.
I've been meaning to visit Quebec again. I used to love going up to Montreal and Quebec in the winter time.
Kinda long drive from Phoenix...
Old 01-06-2008, 11:44 AM
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Originally Posted by MazdaManiac
Mmm. Beer.
I've been meaning to visit Quebec again. I used to love going up to Montreal and Quebec in the winter time.
Kinda long drive from Phoenix...
I am 10mins north of Ottawa. Montreal is a 2hr drive.

If ever your in the area, I would love to pay you to street tune my car.

Wishful thinking I guess. lol
Old 02-17-2008, 12:25 PM
  #373  
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Hey this might be a lil'bit out of the subject but is the Intake Manifold Blocking Plate really nessesary to install for the greddy turbo kit??? Image Link http://i60.photobucket.com/albums/h1...631/intake.jpg
Old 02-17-2008, 12:26 PM
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it's not, don't even bother with it.
Old 02-17-2008, 01:11 PM
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I have had the Greddy kit for 1 1/2 years now with the "fix kit" and havn't had any problems. It probably doesn't matter.


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