Ok like the title sugests Ive just had a new 270ltr fuel pump fitted..Happy with it, ran fine but first time I pulled away hard in 1st and 2nd it was overboosting. HKS evc was set at 1.00bar and it hit 1.3ish and beeped. Gauges hit the same level so not just the evc, but this never happened before the new pump...any ideas people??
New Fuel pump=overboost, hows this??
- Thread starter CJSPulsaR
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Fire & skill
Vintage member
is your EVC showing overboost? is it flashing red
Sorry to dredge-up and old thread, but it looks like I've got the same problem. What was the issue in the end?
Mine has worked well for a long time, but this morning the overboost light came on and the gauge went well past the set point... I tried it with the controller off and it stopped at 0.5bar bang-on, so I'm confident that the wastegate actuator is sound.
Does it just need a good clean and a rebuild?
Mine has worked well for a long time, but this morning the overboost light came on and the gauge went well past the set point... I tried it with the controller off and it stopped at 0.5bar bang-on, so I'm confident that the wastegate actuator is sound.
Does it just need a good clean and a rebuild?
I've had another idea, and that's that maybe one of the wires connecting the EVC to the controller has got a break - that would explain why the valve doesn't open and the unit can see it... but why it isn't a problem with the unit off.
Anyone got any idea which wires control the solenoid opening?
Anyone got any idea which wires control the solenoid opening?
Er... maybe I put the hoses back on the wrong way around when I put the engine back in: http://www.hksusa.com/faq/?ID=1544
I didn't think I had because I numbered them, but maybe I numbered them against the ports and not the order they are on the solenoid like I thought.
I didn't think I had because I numbered them, but maybe I numbered them against the ports and not the order they are on the solenoid like I thought.
What boost pressure are you running? Does it spike or does it stay high. Can you turn your gain down on the controller?
I don't know if its the same model as Andy's but that did strange things too, that we never got round to bottoming out.
I don't know if its the same model as Andy's but that did strange things too, that we never got round to bottoming out.
A leak from the boost controller pipework would make sense. Surely you can narrow-down as to where the leak is due to the fact there is no leak when the controller is off? Therefore the leak or fault occurs in the system that is used when the controller is on.
Also, isn't 270 lph quite high for a pump running on a standard ECU?! I thought it was 255 lph was the limit the standard ECU could handle with fuel control or re-map?
Best ofluck with it!!!
Also, isn't 270 lph quite high for a pump running on a standard ECU?! I thought it was 255 lph was the limit the standard ECU could handle with fuel control or re-map?
Best ofluck with it!!!
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The ecu dosent know what fuel pump your using and it wouldnt matter anyway :lol: You could put a bosch 044 that will supply enough fuel for 500bhp+ on a completley standard car without a problem ;-)