996 Turbo / GT2 Turbo discussion on previous model 2000-2005 Porsche 911 Twin Turbo and 911 GT2.

Greddy over ECU

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Old Jan 2, 2008 | 06:31 PM
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Greddy over ECU

Can someone explain to me exactly how the Greddy overrides the ECU boost control on the Protomotive kit (18/24) or now the Softronic, I'm really curious!

Is the ECU boost written out so the Greddy takes control or does it override the ECU boost?
 
Old Jan 2, 2008 | 06:39 PM
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The N75 valve is disconnected from the ECU. Normally when it wants to lower boost it sends a signal to the N75 valve which then opens the wastegates. The N75 is controlled by the EBC in that application.....
 
Old Jan 2, 2008 | 06:47 PM
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Kevin, How does the Greddy compare over the ECU? my spanner was a bit sceptical about it!
 

Last edited by 996TT_STEVO; Jan 3, 2008 at 05:51 AM.
Old Jan 2, 2008 | 06:51 PM
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Originally Posted by 996TT_STEVO
Kevin, How does the Greddy compare over the ECU?, my spanner was a bit sceptical about it!
Oh stop it... you're just causing trouble now. This could turn into the next ****storm thread. I wouldn't use it on my car, but others swear by it. To each is own....
 
Old Jan 2, 2008 | 07:01 PM
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Originally Posted by KPG
Oh stop it... you're just causing trouble now. This could turn into the next ****storm thread. I wouldn't use it on my car, but others swear by it. To each is own....
lol, no honestly, it might be my guy (and me) who is not getting his head around this completely serious, I'm thinking he thinks that the ECU is being overriden by the Greddy, but your saying that the ECU valve is disconnected anyway.

Why wouldn't you use it on your motor (if running the Proto 18/24 set up) I take it you would just prefer ECU control?
 
Old Jan 2, 2008 | 07:05 PM
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stevo im using on my car . i have a proto setup, if your running the proto set up you have to run the greddy , you cant have an ecu flash .
 

Last edited by unvmy996; Jan 2, 2008 at 07:07 PM.
Old Jan 2, 2008 | 07:05 PM
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Originally Posted by 996TT_STEVO
lol, no honestly, it might be my guy (and me) who is not getting his head around this completely serious, I'm thinking he thinks that the ECU is being overriden by the Greddy, but your saying that the ECU valve is disconnected anyway.

Why wouldn't you use it on your motor (if running the Proto 18/24 set up) I take it you would just prefer ECU control?
I would rather have the ECU control the boost. This is a philosphical kind of thing. The EBC guys love it. The full Motronic guys don't. The N75 valve is disconnected from ECu control and now controlled by the EBC....anything beyond that you should ask the guys that run it regularly. I still think you were causing trouble
 
Old Jan 2, 2008 | 07:13 PM
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You can do it either way. Make the map so the N75 valve controls the boost or use a EBC. Some owners like to control the boost themselves while others do no want to touch it and have it set in the DME. I should note that certain applications you would have no choice.

I remember not long ago when everyone liked a dial a buck. I always thought that those should have had a spot for your credit card next to them so that you could pay for the new engine at the same time.
 

Last edited by Marine8541; Jan 2, 2008 at 07:16 PM.
Old Jan 2, 2008 | 07:21 PM
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Scott, which in your opinion is safer?
 
Old Jan 2, 2008 | 07:22 PM
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Originally Posted by KPG
I would rather have the ECU control the boost. This is a philosphical kind of thing. The EBC guys love it. The full Motronic guys don't. The N75 valve is disconnected from ECu control and now controlled by the EBC....anything beyond that you should ask the guys that run it regularly. I still think you were causing trouble
Kevin, I swear, this is not one of these "HOW LONG TO CHANGE THE RODS" lol

BTW, Kev do you know how long roughly it would take?
 
Old Jan 2, 2008 | 07:24 PM
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Originally Posted by Marine8541
You can do it either way. Make the map so the N75 valve controls the boost or use a EBC. Some owners like to control the boost themselves while others do no want to touch it and have it set in the DME. I should note that certain applications you would have no choice.

I remember not long ago when everyone liked a dial a buck. I always thought that those should have had a spot for your credit card next to them so that you could pay for the new engine at the same time.
So you would stick with the ECU control?
 
Old Jan 2, 2008 | 07:46 PM
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I prefer DME controlled waste gates. This is not to say that an EBC is not safe, just my opinion.
 
Old Jan 2, 2008 | 09:07 PM
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with a boost controller you have overridden the computer and there are no fail safes left in case of bad gas or too much boost.....which means you better know what your doing and practice a little self control or you will be spending alot of time wondering...... WTF just happened.Good for some and very bad for others.BTW I have a boost controller in my car.
 
Old Jan 2, 2008 | 09:25 PM
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Joe what Boost Controller do you run in your car?
 
Old Jan 2, 2008 | 09:54 PM
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I"ve got one and I dig it. I run 3 separate settings. .8/1.0/1.2...depends on what fuel I'm running.
 


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