Notices
Series I Major Horsepower Upgrades This is the place to discuss Super Chargers and Turbos, Nitrous, Porting, etc

Does reducing turbo inlet diameter affect performance?

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old 05-19-2020, 02:06 AM
  #1  
Registered
Thread Starter
 
Jose Zuma's Avatar
 
Join Date: Oct 2019
Posts: 60
Received 12 Likes on 9 Posts
Lightbulb Does reducing turbo inlet diameter affect performance?

Hi guys,

I'm currently running a GT35R in my Reny, this turbo has an inlet intake diameter of 4 inch that makes it difficult to move the air filter out of the engine bay.

Does reducing the diameter to 3 inch will decrease the performance?

The goal here is cold air

Thanks
Old 05-19-2020, 02:22 AM
  #2  
Boosted Kiwi
iTrader: (2)
 
Brettus's Avatar
 
Join Date: Apr 2006
Location: Y-cat-o NZ
Posts: 20,537
Received 1,500 Likes on 847 Posts
3” will be fine .. very minor effect on performance
Old 05-19-2020, 02:25 AM
  #3  
Registered
Thread Starter
 
Jose Zuma's Avatar
 
Join Date: Oct 2019
Posts: 60
Received 12 Likes on 9 Posts
Thanks Bret, that's what I wanted to hear
Old 05-19-2020, 09:20 AM
  #4  
No respecter of malarkey
iTrader: (25)
 
TeamRX8's Avatar
 
Join Date: Apr 2005
Posts: 26,785
Received 2,040 Likes on 1,663 Posts
The RX8 MAF is 86mm/3.375” ID and most MAF tubes for this are 3.5” OD x 16 Ga to give that ID. So that would be a better choice imo. If you have a MAP etc ecu conversion etc then it won’t matter other than it’s better to use the largest possible.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
ripigs
Series I Aftermarket Performance Modifications
33
10-18-2010 07:29 PM
Kane
General Automotive
294
12-18-2007 01:10 PM
rotarygod
Series I Major Horsepower Upgrades
19
07-31-2006 10:07 PM
Feras
General Automotive
11
07-21-2005 11:09 PM
magixpuma
Mazdaparts.com
29
02-20-2005 01:51 AM



You have already rated this thread Rating: Thread Rating: 0 votes,  average.

Quick Reply: Does reducing turbo inlet diameter affect performance?



All times are GMT -5. The time now is 10:21 PM.