2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.
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Old 03-02-06, 05:25 PM
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1993 Mazda RX7 R1

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Boost Problems... & Start Problems..

Hey guys i searched the settings for the Profec B Spec II. I have it at

Set: 0%
Gain: 5%
Set gain: 0

Suppose to be 8 PSI...

1st gear to 5000RPM = 6 PSI
2nd gear to 6000RPM = 12-13 PSI
3rd gear to 6000RPM = 14-15 PSI
4th gear made a fuel cut type of power loss with the noise.


But it changes every pull and is never the same, like 2nd will go from 10-11 PSI to 13-14PSI...


Now there was just a new JSpec put in and the cars been driving for about a week. (mechanics are trying to fix the starting problem) When you go to turn it on you have to have the gas peddle half way down and when you crank it you got to let go of the gas and put your foot down again to start it. When the car is hot it wont start. Anyone have any ideas where to start from?

Mods are:
FMIC
RTek 1.7
720 Greddy Sec'
Walbro 255lph
Full Custom Exhuast
Mariah Intake System
Turbo XCess B.O.V

and other minor things. Thanks Guys

Last edited by RidicilousRx7; 03-02-06 at 05:40 PM.
Old 03-02-06, 08:18 PM
  #2  
1993 Mazda RX7 R1

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