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Mrls1

S13 problem hitting boost

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Hi all. As my s13 comes on boost it starts spluttering and won't hit boost.

 

I looked for cracked cooler pipes and joiners but they are all good.

 

I did notice on my oled greddy boost controller valve one of the ports has nothing in it? I have one going in and one coming out but the 3rd port is threaded hole?

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It wont be the boost solenoid unless its plumbed incorrectly.

 

The other port is there for when using external wastegate (assuming you are still internal) there is an instruction manual available on the Greddy website if you need to check the plumbing.

 

If its not a boost leak it could be a coil pack breaking down or plugs/plug gap as the pressure could be blowing out the spark on boost.

 

It could be a whole host of other things but without knowing your spec its impossible to say

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Bypass the boost controller straight to intake to eliminate that.

 

(Vac line from actuator to intake.)

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When my car did that it was because the coil packs where dying. Some new splitfires fixed it right up

 

I'm pretty sure the third port on the boost solenoid is to vent the bled air

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