Opinions on boost creep. B16
04-19-2003, 04:32 AM
#1
3.0 BAR
Thread Starter
Join Date: Dec 2002
Posts: 3,830
Opinions on boost creep. B16
Posted on HT also. Wanted to know what you guys thought.
Heres the setup:
Stock B16 w/ T3 .48/.60
Hondata, DSM 450's
Ghetto FMIC.
Deltagate 3-5psi spring
3" DP w/ WG rejoining about 20" down.
Still tuning Hondata using the Fmax9psi base tune.
Had to add lots of fuel on the top end. (plugs initialy showed some white after a WOT run/shutdown )
Now a bit of carbon after WOT runs but nothing major. Getting 34mpg on freeway.
Timing is:
Boost____.5____3.7___7.8___11.8
Timing__28.75_25.75_ 23.75__22.0
I'm getting 5-6psi in 1st and 2nd, and 8-9 at the top of 3rd.
Wastegate signal is plumbed to the compressor outlet.
I was also looking at the Mani as a potention source of this problem.
Bad pic I know. Captured these tonight.
The WG is located centraly in the collector but at a 90 angle.
Thinking that under higher pressures and flow rates, the exh. gas is having a difficult time making the bend.
After reading another post on effects of timing, I will give the timing some adjustments Sat. and see what happens.
http://www.honda-tech.com/zerothread?id=454167 Great info.
Whats your thoughts on my creep/timing?
TIA,
Dave
PS,
The nasty stuff on the mani is some rust remover not completely cleaned off
Heres the setup:
Stock B16 w/ T3 .48/.60
Hondata, DSM 450's
Ghetto FMIC.
Deltagate 3-5psi spring
3" DP w/ WG rejoining about 20" down.
Still tuning Hondata using the Fmax9psi base tune.
Had to add lots of fuel on the top end. (plugs initialy showed some white after a WOT run/shutdown )
Now a bit of carbon after WOT runs but nothing major. Getting 34mpg on freeway.
Timing is:
Boost____.5____3.7___7.8___11.8
Timing__28.75_25.75_ 23.75__22.0
I'm getting 5-6psi in 1st and 2nd, and 8-9 at the top of 3rd.
Wastegate signal is plumbed to the compressor outlet.
I was also looking at the Mani as a potention source of this problem.
Bad pic I know. Captured these tonight.
The WG is located centraly in the collector but at a 90 angle.
Thinking that under higher pressures and flow rates, the exh. gas is having a difficult time making the bend.
After reading another post on effects of timing, I will give the timing some adjustments Sat. and see what happens.
http://www.honda-tech.com/zerothread?id=454167 Great info.
Whats your thoughts on my creep/timing?
TIA,
Dave
PS,
The nasty stuff on the mani is some rust remover not completely cleaned off
04-21-2003, 04:05 PM
#3
Administrator
Join Date: Dec 2002
Posts: 13,991
Re:Opinions on boost creep. B16
Interesting.. I'm running nearly the same setup, the WG is in a similar spot.. Its a bit difficult to see where exactly yours is off of? right off the collector? Did you make that manifold? everything is pretty smooth flowing inside? as in the WG hole is plenty big right?
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