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srpwr1985

Boost is cuttin out.

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Hey Nissansilvia members,

 

I got a problem.

 

My silvia is boosted to 1.0 bar... but when i put my foot to the metal.

my boost cuts out before reaching to 4 thousand rpms....

and ill just loose power and hear a back fire.. or somthing is

just not gettin released....well yah hear somthing just poped.

 

 

what could be the problem?

 

If anyone has the answer that would be great!

 

Cheers!

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mabey a vac lines come of causing it too over boost check all vac lines and cooler piping

have you got a guage?

did u wind up the boost ?

try wind the boost down a little and see if its hitting the factory boost cut

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yea i have got a gauge..

 

ill try all those see if anything happens....

 

thanks!

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if yuu have a FMIC check all the silicone joins. You will have a leak. The system is closed util boost starts to get too high for the loose clamp or split in the join. It opens up and enough boost escapes to cause the AFM to max out.

This causes a fuel cut.

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^^^^^ Exactly.

 

Also try what ca18owna said about winding down the boost a bit.

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one or more coil packs might be causing a flat spot as well so the car will make 'popping' sounds

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im in the same boat i think, get to bout 4500rpm n starts popping but with no loss of power (that i can dramaticly notice) rb25 tho 10psi

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yeah try gapping your aprkplugs, i bought some new ngk R gapped to .7mmm works great, also wind your boost down and see if it helps... it might be causing your car to detontate.

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Check your silicone hoses, one of them is probably loose and is blowing off when too much pressure is in the pipes. Check the one coming from your throttle body.

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