Setup:
B18C1- 81mm ~9.5:1cr
USDM P72 ECU
Hondata S300
Hondata Boost Control Solenoid
Hondata 4-bar MAP
RC 750cc Saturated
Walbro 255
Inline Pro Mani
T3/60-1 .63a/r
3" Turboback
Tial 38mm WG- 13psi Spring
New Autometer Digital Electronic Boost Gauge
Issue:
Boost gauges read 13psi at full boost
Hondata reads no more than 8psi
Hondata boost cut set at 10.5psi- Never hits boost cut at any point during pulls
Already Tried:
No boost controller- the Hondata controller was disconnected- no effect
Different Hondata 4-bar- Had another one around the shop, put it on- no effect
Different Boost Gauge- plugged in a mechanical Defi gauge- no effect
Thoughts? Car runs mint, seemingly no vacuum leaks, no stutters, car makes 8psi power levels...am I over looking a vacuum leak? Then why isn't the car stuttering?
Not Reading Boost Correctly?
Not Reading Boost Correctly?
Last edited by pwrofdrm on Fri Oct 10, 2008 12:26 pm, edited 1 time in total.
A stock map sensor cannot read 24psi. IF your boost cut is set at 10.5 psi and you have a stock map sensor it may not activate the boost cut since the map sensor may not be able to read that high. It may only be able to read to 10.3 or so. Without datalogs and calibrations showing the problem is is hard to tell exactly what the problem might be.