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Old 11-14-2008, 08:56 PM   #1
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Default Greddy Kit?!?!

I am thinking about grabbing one of these through work I can get it without paying up front and just have them take a bit off each pay check. I think its like $1700CAN shipped to me. I know the kit out of the box can bolt up and work on your car as is, its a mere 6psi of boost (5.7) to be exact.

This would be the stepping stone into the world of forced induction for me. I already know that the lack of Fuel Management and intercooler is the biggest downsides to the kit and there are hold backs such as issues with the manifold and the downpipe.

I have done some research on the turbo included with the kit its a standard mitsubishi 15g turbo and can support something like 25psi of boost max, but I know that its set for the 5.7psi of boost from Greddy. Would increasing the boost require you to change the manifold to something with a external wastegate? Or can you change the internal wastegate on this turbo to increase its boost?

Yes I know I will need some method of fuel management, that job is already reserved for an AEM PnP ECU specifically designed for our little beauties, boost controll will come from some electronic device and the entire ignition is going to be replaced with a MSD 6200 system.
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Old 11-14-2008, 10:25 PM   #2
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You really, really need to read more around here.
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Old 11-14-2008, 10:29 PM   #3
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Lucas,for $1700 I suggest you skip the Greddy kit and pick up some used FM/BEGi equipment.

It may be used,but it's far more reliable and better built than the Greddy stuff ever will be.
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Old 11-14-2008, 11:42 PM   #4
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Look up boost controllers. That's how you'll get more than 6psi.
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Old 11-15-2008, 12:26 AM   #5
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Quote:
Originally Posted by Meola View Post
I am thinking about grabbing one of these through work I can get it without paying up front and just have them take a bit off each pay check. I think its like $1700CAN shipped to me. I know the kit out of the box can bolt up and work on your car as is, its a mere 6psi of boost (5.7) to be exact.
Don't get a Greddy, the Begi S1 is a far better deal. FYI - get in the habit of not measuring psi to the tenth of a pound. You'll only be setting yourself up for disappointment later on when you discover it's damn near impossible to nail such a specific psi. Besides, in the real world most Greddy kits make around 4.5-5 psi "stock"
Quote:
This would be the stepping stone into the world of forced induction for me. I already know that the lack of Fuel Management and intercooler is the biggest downsides to the kit and there are hold backs such as issues with the manifold and the downpipe.
The Greddy is bare f'in bones, true. This is why the Begi S1 is such a better idea, if for no other reason than that it starts you off with a better foundation.

Quote:
I have done some research on the turbo included with the kit its a standard mitsubishi 15g turbo and can support something like 25psi of boost max, but I know that its set for the 5.7psi of boost from Greddy. Would increasing the boost require you to change the manifold to something with a external wastegate? Or can you change the internal wastegate on this turbo to increase its boost?
Upping the boost can be as easy as taking a couple 10mm wrenches to the wastegate actuator, though this will only get you a few more psi. People do change the wastegate can (I did) but it's not usually done solely to increase the boost. And holy ****, if you're thinking about external wastegates on a Greddy, well, that's just silly.

Quote:
Yes I know I will need some method of fuel management, that job is already reserved for an AEM PnP ECU specifically designed for our little beauties, boost controll will come from some electronic device and the entire ignition is going to be replaced with a MSD 6200 system.
The AEM's great, some might say overkill because it's not a good value for what you get. Search here for "COP" or "COPs" ignition, I don't know what that MSD system is but it's probably either overkill or crap.


My advice in bold.
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Old 11-15-2008, 12:57 AM   #6
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Meola, do NOT buy anything.
You need to read and read and read and read ABOUT FORCED INDUCTION IN GENERAL, not about the con's of the Greddy kit. You have some gross misconceptions about the purpose of the manifold and wastegate. Spend a couple of weeks browsing this forum reading everything, and then buy a book called "Maximum Boost" by Corky Bell.

Then go find one of your buddies who has a turbocharged car and have him walk you through all of the individual parts and explain what they do.

Buying a new Greddy kit is a waste of money. The only quality part on the whole thing is the turbo itself... the rest is junk. The manifold is a decent piece, but Greddy has known for a decade about the cracking problems and is well aware that their supplied hardware is complete crap... and has done nothing. That kind of customer support would prevent me from ever buying one of their product. Oh yah, and they're bankrupt now... go figure.
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Old 11-15-2008, 01:18 AM   #7
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I don't know much about the AEM computer. There are cheaper things out there. But I don't know much about tunning.

Is this the only kit they will help you out on? If so, I understand. Financing is half the battle sometimes.
If you do have a choice, or they will help you pick up something used, go with the kit with the bigger down pipe. (begi)

As far as turning up the boost. That is so simple. The hose that goes from the compressor to the wastgate is where you splice in a boost controller. I like my manual boost controller. It is from NXS on ebay $19.00 shipped, and it has a relief port on it to keep boost spiking down. MY boost stays constant fairly well.
It is easy to add a Intercooler to either one. You dont have to weld everything. I used silicone couplers. On my spare car I'm going to use a VW Jetta IC from the junk yard.

To go over 7 psi you need larger injectors, and an IC. With 1.8L injectors you should be good for 8-9 psi. And your gas mileage will stay the same. You only need the supplied fpr for this. Get a used bipes or msd if going this direction. $2100.00 total your done. $2300 with AEM wideband

$1600 for AEM and $1700 for a greddy, 225.00 for AEM WBO2 = $3525 that is hard to pay off.

You can get a used greddy pretty cheap.

LOOK in https://www.miataturbo.net/forum/t4288/ This will answer alot of questions.

Just be careful not to put way too much into it. I didn't want over $5500 in mine including the car.
GOOD LUCK!

Last edited by Toddcod; 11-15-2008 at 01:34 AM.
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Old 11-15-2008, 01:48 PM   #8
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Originally Posted by Toddcod View Post
$2100.00 total your done.
Done? What is this word, done?
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Old 11-15-2008, 02:14 PM   #9
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Done? What is this word, done?
It is believed to be some mystical force meaning you never have to fiddle with it again,I don't know about you,but I have never seen it happen.
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Old 11-15-2008, 02:30 PM   #10
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Especially not 'round these parts.
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Old 11-15-2008, 02:33 PM   #11
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The Greddy is a nice bit to go with if you feel like tinkering and wrenching and want to start with the bare bones so that you can personally build upon it as you feel fit. It's a perfectly good little turbo that has been proven capable under the right hands and enough time/tweaking/additional parts to produce 240-ish whp.That said, the BEGI-S is by far the absolute best bang for the buck turbo kit around and if you want the most for your dollar go with this - all the parts are top quality and you can build on it with other BEGI parts if you wish down the road. And Corky deserves our hard earned money
I don't know why you want to get a new ignition system - it's completely unnecessary. The AEM, if that's what's hot in your neck of the woods will work well, though many here will point you towards the Megasquirt... so will I - I love it!
-Ryan
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Old 11-17-2008, 03:57 PM   #12
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definitely agree with those who say begi-s. Its well worth the money and is excellent quality. I just got the s kit from Corky and love it. I would definitely look around and learn as much as i could before buying anything. There are always ways to save money and little problems to deal with no matter what kit or diy turbo you go with.
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Old 11-17-2008, 06:33 PM   #13
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I have been told that the BEGI kit is better then the greddy and yes I am going to be building up from bare bones basic to full standalone EMS for future ability to build the engine and run insane amounts of boost or something. I am not hell bent on the Greddy kit its just easy access for me to get a new kit shipped to my hands as my work distributes greddy and I could walk out of here without paying a dime for a kit. I dont make the high roller money nor do I have the patience to save the $3000 I would need to get a BEGI or FM kit whereas my work will take $50 a paycheck or whatever I setup so I dont even have to worry about it.

I 100% expect to have little problems with any kit on my car if not I would be quite pissed I am not here of easy of installation or tuning, I want something that will allow me to fiddle with my car more add a bit more power to play with and just get that stepping stone in there to work on as the car will need a new flywheel/clutch and rear end before there is any real boost pushed through the system.

And ya I will admit I have no clue what the hell is up with wastegates with the internal this and external that. It just seems that more high boost applications are running an external wastegate while kits like the greddy come with an internal wastegate but people have systems running 10+ psi of boost which is what I am aiming for (would be content with 12-14psi before building up the internals, that is if this is possible safely) but thats the only part to turbos thats greek to me and I would rather not pay anything for books and just read it off Wikipedia.

If all else fails I may just get an ebay manifold and get a turbonetics or HKS turbo through work but the cost of just the turbo alone is out of this world looking for a cheap setup to build up on and thought the greddy would be suffice. Thanks for all the info on this I will definately be researching it more before I do anything about it.
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Old 11-17-2008, 07:59 PM   #14
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The Begi-S is about 1600 US, not 3000. Both ways are "stepping stones" and will allow you to tinker plenty, but the Begi is far better in every way. Take note of the people telling you to skip the Greddy, you'll notice most of us have a Greddy ourselves.
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Old 11-17-2008, 08:04 PM   #15
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That still makes the BEGI kit shy of $2000CAN without shipping, taxes and duty to get it across the line for me. And yes I have noticed that, its still something to look into my biggest draw to the greddy kit is my work is a greddy dealer so I can turn around and get them to take $50 a paycheck until I pay the kit off instead of having to pay it all upfront I am no bling bling baller here just an underpaid 22 year old :P
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Old 11-17-2008, 10:29 PM   #16
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Greddy is a great deal - if you buy it used like I did for about $700. I would not have spent retail (about US $1400) though. Realistically, the Greddy kit is a turbo - that's all, just a turbo and basically the crappiest pipes they could possibly find thrown in to get the oil and air through the turbo into the car. The BEGI-S is just more of everything for almost the same money if you are comparing them at retail value...
Also, if you could eventually pay off your greddy, save the amount you would have paid each month or paycheck or whatever and when you have the amount you need, buy the turbo. Why get yourself into debt to someone? Patience.
-Ryan
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