Single Turbo RX-7's Questions about all aspects of single turbo setups.

holding boost at high rpm question

Old 12-23-15, 08:55 AM
  #1  
back with rotaries
Thread Starter
iTrader: (7)
 
eddierotary's Avatar
 
Join Date: Nov 2001
Location: Watertown, NY
Posts: 2,216
Likes: 0
Received 0 Likes on 0 Posts
holding boost at high rpm question

hey guys i'm not sure if is a leaking wastegate or a setting on my greddy boost controller but i'm been having some trouble holding boost at high rpm. my tdo6/60-1 setup on my FC builds boost at 3k about 4 will build to 17 psi and then just start fluctuating between 17-15 or sometime lower to the 12's all the way to rev limit at 8100. now i am not sure whats causing it. i thought was the turbo been small or going bad but only have a few miles and have enough oil to it. check for exhaust and intake leaks and nothing. does anyone had this problem before and what help fixing it? thanks

Eddie

btw. is a street ported turbo II engine with a full greddy turbo kit, tdo6/60-1 turbo hybrid from bnr, microtech, profec 2 boost controller, 1000x4 injectors, full 3 inch RB exhaust msd ignition.
eddierotary is offline  
Old 12-24-15, 03:25 PM
  #2  
rotorhead
iTrader: (3)
 
arghx's Avatar
 
Join Date: Aug 2004
Location: cold
Posts: 15,615
Received 50 Likes on 50 Posts
What are your boost controller settings?
arghx is offline  
Old 01-01-16, 03:22 PM
  #3  
Senior Member
 
Join Date: Dec 2002
Location: North Atlanta, GA
Posts: 599
Likes: 0
Received 1 Like on 1 Post
Something that could be easy to try is to make your own cheap spring and ball boost controller and see what happens, it could also help you spool a little faster than ebc. In the end you are only out $15 for making mbc, worth a try.
12abridgeport is offline  
Old 02-02-16, 04:06 PM
  #4  
back with rotaries
Thread Starter
iTrader: (7)
 
eddierotary's Avatar
 
Join Date: Nov 2001
Location: Watertown, NY
Posts: 2,216
Likes: 0
Received 0 Likes on 0 Posts
Sorry for not replying sooner. I'm been playing around with the settings I have the "set" at 40% "gain" at 25%, "set gain" at 13 psi. Now I lowered the boost to 15 psi and holds 15 until 6000 rpms and starts fluctuating between 12 and 15 and sometime drops lower than that. I try adding fuel and play with the timing but no change
eddierotary is offline  
Old 02-05-16, 05:03 PM
  #5  
Rotary Enthusiast
iTrader: (3)
 
Join Date: May 2011
Location: Minnesota
Posts: 887
Likes: 0
Received 11 Likes on 11 Posts
Sounds like a controller issue.
shawnm565 is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Ramezcua1
Rotary Car Performance
13
12-18-15 12:00 PM
dream3rdgen
3rd Generation Specific (1993-2002)
23
11-10-15 08:42 PM
justinfox
1st Generation Specific (1979-1985)
6
11-07-15 09:23 AM


Thread Tools
Search this Thread
Quick Reply: holding boost at high rpm question


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: