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Old 11-21-2009, 11:46 AM   #1 (permalink)

 
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GReddy turbo chat and discussion

Please post your GReddy turbo discussion here. Issues, problems, technical questions etc.
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Old 11-21-2009, 08:30 PM   #2 (permalink)
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Quote:
In for 1st post.

My biggest question is how come some people claim then hold consistent boost with this kit?

No matter what I've tried I lose up to 2 psi in high rpm's.
Well this fix to this is the Hondata boost control solenoid and use the boost by gear in flashpro.

Last edited by maiku; 09-21-2010 at 04:07 AM.
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Old 11-23-2009, 10:16 AM   #3 (permalink)
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I don't think, well I know that with the Greddy you CAN'T hold the same amount of PSI throughout the whole powerband, no matter what boost controller you have. With an EBC, you can reduce the amount of PSI you lose, but you can't maintain the same PSI. The only way to solve that is by using a better manifold (Full-Race) and/or an external wastegate.
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Old 11-26-2009, 08:52 AM   #4 (permalink)
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Quote:
Originally Posted by BlueSi4 View Post
I don't think, well I know that with the Greddy you CAN'T hold the same amount of PSI throughout the whole powerband, no matter what boost controller you have. With an EBC, you can reduce the amount of PSI you lose, but you can't maintain the same PSI. The only way to solve that is by using a better manifold (Full-Race) and/or an external wastegate.
thats exactly what i think
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Old 11-26-2009, 02:15 PM   #5 (permalink)
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what do you guys clean your greddy air filter with?
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Old 12-01-2009, 09:20 PM   #6 (permalink)
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swap it out with a Fujita 3inch. The turbo sounds healthier.
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Old 12-03-2009, 10:12 AM   #7 (permalink)
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where can i find said 3 inch filter?
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Old 12-06-2009, 10:23 PM   #8 (permalink)
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For real where can you get a 3 in" intake?
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Old 12-06-2009, 10:30 PM   #9 (permalink)
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Originally Posted by BlueSi4 View Post
I don't think, well I know that with the Greddy you CAN'T hold the same amount of PSI throughout the whole powerband, no matter what boost controller you have. With an EBC, you can reduce the amount of PSI you lose, but you can't maintain the same PSI. The only way to solve that is by using a better manifold (Full-Race) and/or an external wastegate.
Incorrect! I actually am getting boost creep now with the Apexi AVCR. lol..I actually had to set up the duty cycle based on rpm to hold boost steady to redline. I have it now where it holds 10psi right to redline. No lie. When I first installed the Apexi, I set the duty to an even 50% and it held 10psi to vtec then it spiked to 15psi all the way to redline. So the correct boost controller WILL allow the GReddy kit to hold steady boost. The other issue with the GReddy turbo is the actuator is weak. That is why it drops boost pressure. The high flow of this motor actually will push the gate open at the higher RPMs. But if you can lower duty based on RPM, like with the Apexi or Kpro, it will actually close the gate far enough to allow the turbine to keep the turbo boosting. At least that is what I found.
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Old 12-07-2009, 11:35 AM   #10 (permalink)
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Anyone know when Hondata plans to release their boost controller for the Flashpro?
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Old 12-07-2009, 11:41 AM   #11 (permalink)
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Yeah I was told about that AVC-R boost controller a while ago, but my tuner at the time told me that it was too complicated to set up and that it wasn't worth it. The Greddy turbo won't stay in the car for much longer, and hopefully with a bigger turbo like the GT2871 or something like that, the boost creep won't be as bad as it is with the Greddy.
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Old 12-07-2009, 03:28 PM   #12 (permalink)
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Yeah I was told about that AVC-R boost controller a while ago, but my tuner at the time told me that it was too complicated to set up and that it wasn't worth it. The Greddy turbo won't stay in the car for much longer, and hopefully with a bigger turbo like the GT2871 or something like that, the boost creep won't be as bad as it is with the Greddy.
You mean boost drop. And the turbo size doesn't matter. I was still getting horrid boost drop with the GT2871 until I installed the Apexi. It's the wastegate spring. It's to weak to hold the gate closed at high RPM. But the apexi will actually close the gate almost all the way because of the closed loop feedback and the adjustable feedback speed control. It really is an awesome piece of equipment. It is a little tricky at first but you figure it out.
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Old 12-07-2009, 03:31 PM   #13 (permalink)
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You mean boost drop. And the turbo size doesn't matter. I was still getting horrid boost drop with the GT2871 until I installed the Apexi. It's the wastegate spring. It's to weak to hold the gate closed at high RPM. But the apexi will actually close the gate almost all the way because of the closed loop feedback and the adjustable feedback speed control. It really is an awesome piece of equipment. It is a little tricky at first but you figure it out.
Yeah boost drop, I got mixed up. I think the Gizzmo will work pretty well, my guy highly recommends it.
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Old 12-07-2009, 03:39 PM   #14 (permalink)
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Yeah boost drop, I got mixed up. I think the Gizzmo will work pretty well, my guy highly recommends it.
That was my next option. I was so close to buying the Gizzmo but I went Apexi. I will probably just stick with this controller since it works mint. Even when Hondata comes with boost control. Only because every time you want to change your boost setting you'll have to reflash it. And if you don't get the setting right you'll have to keep reflashing and driving until you find the right setting. It's gonna be a pain in the ass. lol.
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Old 12-07-2009, 03:41 PM   #15 (permalink)
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Quote:
Originally Posted by soxfan143 View Post
That was my next option. I was so close to buying the Gizzmo but I went Apexi. I will probably just stick with this controller since it works mint. Even when Hondata comes with boost control. Only because every time you want to change your boost setting you'll have to reflash it. And if you don't get the setting right you'll have to keep reflashing and driving until you find the right setting. It's gonna be a pain in the ass. lol.
The Gizzmo is fairly similar to the Apexi, correct? I know the Apexi has a lot more features like boost by gear and things like that if I'm not mistaken, but as far as duty cycle and keeping the gate closed, they are fairly similar?
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Old 12-07-2009, 06:27 PM   #16 (permalink)
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I guess I was wrong about my last statement about tuning boost when Hondata releases it. They just implemented LIVE TUNING!!
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Old 12-07-2009, 06:47 PM   #17 (permalink)
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Say what??
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Old 12-07-2009, 09:21 PM   #18 (permalink)
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nvm off topic.

Last edited by hondahead814; 12-07-2009 at 09:54 PM.
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Old 12-07-2009, 09:46 PM   #19 (permalink)
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Yeah that's very off-topic, not really the need to discuss it here since it has been talked about for a while now
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Old 12-19-2009, 11:54 PM   #20 (permalink)
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Lookin to go boost summer 2010 and I have been doing alot of homework on turbo's. I like the greddy kit because I have heard they are reliable, but to spend $3k+ on a kit and only get about 250-260whp is kinda low hp for $$$. I was wondering what all would need to be done to this kit to get it over 300whp. I already have 70mm exhaust and flash pro which I know will help a little. My target whp is about 320. Should I go with the greddy kit and just upgrade it, or should I just go another route like SRT?
Thanks.
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