Fuel restriction past 5psi
Thread Starter
Junior Member
Joined: May 2013
Posts: 10
Likes: 0
From: Nottingham
Vehicle: Gen 2
Fuel restriction past 5psi
Hey guys, only ever made one post on here but have been told to jump back on,was planning on getting rid of the car but it now has until aug to work.
Current setup.
Jattus stage 2 kit Minus the 20g as it broke so i now have BIG 16 2001 coupe 2.0
490cc secondary injectors
It has a perfect power SMT6 wired up but i believe its wired in wrong... it can read RPM and TP and i have connected a VAC line into the internap map sensor it has and yet it does not understand load, its been to 2 different garages to be done and both times not done and the end result was i needed to rebuild my engine.
Engine rebuilt and now im without spending loads of money trying to get her working.
When i first got the car it boosted well, i got 10psi out of it easy enough without any problems, this was WITHOUT the SMT as it was not wired in right & did not have a MAP so the car was running stock ECU on 3bar of fuel pressure with stock ECU and boosting.
Somewhere along the line the car decided to stop boosting without anything being touched, this is when i took it to the second garage who claimed they wired in the SMT but my engine suffered.
I have decided to "test" the car by putting the primary injector plugs on my secondary injectors so that i now have 490cc injectors firing as primarys from the ECU.
I thought the car would run rich until it hit boost and then the bigger injectors would help but i have found still with the large increase in injectors the car still will not boost past 5psi.
Anybody had this problem before? know what it could be? The car can and does boost past 5psi if more fuel is added but something other than stock ecu.
Could it be a sensor?
Current setup.
Jattus stage 2 kit Minus the 20g as it broke so i now have BIG 16 2001 coupe 2.0
490cc secondary injectors
It has a perfect power SMT6 wired up but i believe its wired in wrong... it can read RPM and TP and i have connected a VAC line into the internap map sensor it has and yet it does not understand load, its been to 2 different garages to be done and both times not done and the end result was i needed to rebuild my engine.
Engine rebuilt and now im without spending loads of money trying to get her working.
When i first got the car it boosted well, i got 10psi out of it easy enough without any problems, this was WITHOUT the SMT as it was not wired in right & did not have a MAP so the car was running stock ECU on 3bar of fuel pressure with stock ECU and boosting.
Somewhere along the line the car decided to stop boosting without anything being touched, this is when i took it to the second garage who claimed they wired in the SMT but my engine suffered.
I have decided to "test" the car by putting the primary injector plugs on my secondary injectors so that i now have 490cc injectors firing as primarys from the ECU.
I thought the car would run rich until it hit boost and then the bigger injectors would help but i have found still with the large increase in injectors the car still will not boost past 5psi.
Anybody had this problem before? know what it could be? The car can and does boost past 5psi if more fuel is added but something other than stock ecu.
Could it be a sensor?
Thread Starter
Junior Member
Joined: May 2013
Posts: 10
Likes: 0
From: Nottingham
Vehicle: Gen 2
ish.... if i place my foot on the throttle the rpm will go up but harder i press the throttle the more the smt will move to the right.
This is not good because its hitting cells which fire fuel for gears like 5th at 4k RPM if this makes sense?
This is not good because its hitting cells which fire fuel for gears like 5th at 4k RPM if this makes sense?