Greddy turbo - Page 8 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

hiranak · 11-01-2014, 03:58 PM

Quote:

Originally Posted by ofuts

Hi, i'm new to turbo kits and planning to install this kit soon.
Do i need other extras like blow off valve, oil cooler or wastegate?
I am planning to run 7psi at start but will increase later on probably, so would appriciate suggestions.

I have been running the Greddy kit for more than 4 months, its absolutely superb, I have installed a Greddy Oil cooler, it doesn't need a bov and has a waste-gate.

Further, I got my one tune by Delicious tuning, and runs very smooth.

midnight23 · 11-03-2014, 01:02 AM

Quote:

Originally Posted by ofuts

Hi, i'm new to turbo kits and planning to install this kit soon.
Do i need other extras like blow off valve, oil cooler or wastegate?
I am planning to run 7psi at start but will increase later on probably, so would appriciate suggestions.

only recommend oil cooler if you plan on tracking the car or driving in hot weather. I do not run a blow off valve with the kit.

ofuts · 11-24-2014, 09:40 AM

Hi again,
I am planning to install 3" frontpipe and overpipe to match with my 3" catback.
Any ideas how to connect with this kits test pipe? Do i need a custom made overpipe starting 60mm and widen to 3"?

Reaper · 11-24-2014, 10:00 AM

Worthless with a 60 mm downpipe. Stock overpipe will outflow that downpipe.

ofuts · 11-24-2014, 11:18 AM

Quote:

Originally Posted by Reaper

Worthless with a 60 mm downpipe. Stock overpipe will outflow that downpipe.

Hi, thanks for the reply.
Everyone suggested me to go with 3" catback if i was thinking about turbo FI, so i thoughed it effects the flow regardless of bottleneck of the system, and that free-flow effects the turbo performance greatly.
There will eventually be an outflow at one point, catback right now, but it can olso be overpipe or frontpipe, bottleneck will stay as downpipe. I guess a high-flow cat will make some difference for performance so thats the main reason i'm leaning on this, making it 3" would be better ofcourse. Not considering overpipe too much but read that curve of overpipe is only needed for JDM spec cars, so eliminating that curve can olso make a difference.
So my question is, am i thinking wrong, is it not worthed? I mean if there will be only around 5-8whp differnce after turbo, it is for sure not worthed the money, time and potential problems, which are more difficult to solve here in China.

midnight23 · 11-24-2014, 10:52 PM

Quote:

Originally Posted by ofuts

Hi, thanks for the reply.
Everyone suggested me to go with 3" catback if i was thinking about turbo FI, so i thoughed it effects the flow regardless of bottleneck of the system, and that free-flow effects the turbo performance greatly.
There will eventually be an outflow at one point, catback right now, but it can olso be overpipe or frontpipe, bottleneck will stay as downpipe. I guess a high-flow cat will make some difference for performance so thats the main reason i'm leaning on this, making it 3" would be better ofcourse. Not considering overpipe too much but read that curve of overpipe is only needed for JDM spec cars, so eliminating that curve can olso make a difference.
So my question is, am i thinking wrong, is it not worthed? I mean if there will be only around 5-8whp differnce after turbo, it is for sure not worthed the money, time and potential problems, which are more difficult to solve here in China.

3" front pipe catback will get best flow, leave overpipe 2.5" for less issues

Reaper · 11-25-2014, 12:47 AM

Fullblown made 600whp on stock overpipe. If your downpipe is 60mm it doesn't matter how big of an overpipe you put it.

11-24-2014, 10:00 AM	#102
Reaper in orbe terrum non visi Join Date: Jan 2014 Drives: violent Location: Mountains Posts: 1,747 Thanks: 279 Thanked 762 Times in 446 Posts Mentioned: 62 Post(s) Tagged: 1 Thread(s)	Worthless with a 60 mm downpipe. Stock overpipe will outflow that downpipe. __________________ I have E85 where there isn't E85, that's my secret. http://www.ft86club.com/forums/showt...t=reaper+build

11-25-2014, 12:47 AM	#105
Reaper in orbe terrum non visi Join Date: Jan 2014 Drives: violent Location: Mountains Posts: 1,747 Thanks: 279 Thanked 762 Times in 446 Posts Mentioned: 62 Post(s) Tagged: 1 Thread(s)	Fullblown made 600whp on stock overpipe. If your downpipe is 60mm it doesn't matter how big of an overpipe you put it. __________________ I have E85 where there isn't E85, that's my secret. http://www.ft86club.com/forums/showt...t=reaper+build

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11-24-2014, 09:40 AM	#101
ofuts Member Join Date: Oct 2014 Drives: 2013 Toyota 86 MT Location: Huzhou/China Posts: 70 Thanks: 21 Thanked 4 Times in 4 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Hi again, I am planning to install 3" frontpipe and overpipe to match with my 3" catback. Any ideas how to connect with this kits test pipe? Do i need a custom made overpipe starting 60mm and widen to 3"?

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