Boost control with s300 problem!!!
Boost control with s300 problem!!!
ok so for some reason i dunno why but maybe you guys can tell me, i setup the duty cycle to 65% with a boost cut to 16psi, sometimes she will just fly and hit boost cut and other times she will be steady at around 14-14.5 psi witch is what it should be.
or when i went on the dyno she was just all over the place 19psi drop to 12 and so on could somebody explain to me y is that and then she desides to work sometimes. coulnt get tuned on race fuel because of that.
or when i went on the dyno she was just all over the place 19psi drop to 12 and so on could somebody explain to me y is that and then she desides to work sometimes. coulnt get tuned on race fuel because of that.
civic hatch 98 with b16a 2gen
benson sleeved
cp 9:1
manley rods
supertech valvetrain
gt3076r
2.5inch hotside charge piping and 3" cold side
hondata 4bar map sensor
tial 44mm wastegate
tial 50mm BOV
anything else ?
using a p06 with pwm and s300 chipped by phearable.net wont hold boost
it wont hold boost and other times it does.
benson sleeved
cp 9:1
manley rods
supertech valvetrain
gt3076r
2.5inch hotside charge piping and 3" cold side
hondata 4bar map sensor
tial 44mm wastegate
tial 50mm BOV
anything else ?
using a p06 with pwm and s300 chipped by phearable.net wont hold boost
it wont hold boost and other times it does.
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- 4th 64duty.s3d
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Last edited by element on Tue May 06, 2008 10:04 pm, edited 1 time in total.
Heat could definately be a factor in why it is changing, but it appears you are just using a set duty cycle of 64%. If you have not actually gone through and tried different duty cycles and entered the vales in the table below you will not have the correct duty cycle for the amount of boost you want to run.
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Can you elaborate on this a bit more?Spunkster wrote:Heat could definately be a factor in why it is changing, but it appears you are just using a set duty cycle of 64%. If you have not actually gone through and tried different duty cycles and entered the vales in the table below you will not have the correct duty cycle for the amount of boost you want to run.
Are you saying.. You have to run a specific Duty cycle, then whatever the PSI is.. You enter that Into the chart? and Keep going up, uptill it's all filled out?
Or.. Do you follow the chart for a precise PSI?
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- Posts: 86
- Joined: Mon Jul 21, 2003 5:00 pm
- Location: Arvada, CO.
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its possible. We see lots of surge and spike issues when pushing past the spring pressure that much. The general rule is no more than 2x the spring, or you get boost control probs.element wrote:its like a 11 or 10psi. could that be it ?
High altitude tuner www.tcperf.com
Taken directly from the Help file:
The Pressure vs Duty Cycle table contains a lookup of pressure valves which correspond to a solenoid duty cycle. The values for this table must be set by using a fixed duty cycle (see Control Method) and noting the resulting manifold pressure. Note that different ambient conditions will result in slightly different boost pressures for the same duty cycle.
The Pressure vs Duty Cycle table contains a lookup of pressure valves which correspond to a solenoid duty cycle. The values for this table must be set by using a fixed duty cycle (see Control Method) and noting the resulting manifold pressure. Note that different ambient conditions will result in slightly different boost pressures for the same duty cycle.
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- Posts: 86
- Joined: Mon Jul 21, 2003 5:00 pm
- Location: Arvada, CO.
- Contact:
How are you supposed to accomplish this when you don't really want to boost more than 'said' amount...Spunkster wrote:Taken directly from the Help file:
The Pressure vs Duty Cycle table contains a lookup of pressure valves which correspond to a solenoid duty cycle. The values for this table must be set by using a fixed duty cycle (see Control Method) and noting the resulting manifold pressure. Note that different ambient conditions will result in slightly different boost pressures for the same duty cycle.
So.. It's basicly a 'hit or miss' sort of thing?