help, dump valve was loud not anymore

p34ch3y

tastefully modified
Oct 17, 2005
2,879
1
cambs
just had my car remaped a few weeks ago n i loved the sound of the dv it wer propper loud BUT its not quite as loud any more

anyone no y this could be or what might have gone?

help please
 

p34ch3y

tastefully modified
Oct 17, 2005
2,879
1
cambs
yea mabie, its a bailly dv30, i also think that when the boost come on the needle dont go up quite so quick:shrug:

could it be the n75 valve or mabie maf even tho i had a new maf 2weeks ago when i had it remaped
 

acidstrato

My Fast says shut up!
Dec 9, 2004
5,942
0
Newport, South Wales
yeah very possible, is the car noticeably slower due to this?

sure you know what im gonna say is the only way you'll know for sure

however you could also do a leak back test on the dv to make sure its not leaking. basically u push up the piston from underneath, cover the top nipple with a finger and then let go of the piston and see if the piston pops back down or if it holds like it should do
 
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