ive recntly put on a fmic and a hks (newest 1) ssq bov and its taken away my idle burble! ( reason i bought the beast!) and it dont seem to idle properly! and when me car is colod it wont start first time and seems to take a lil longer! i need help to find out irf this is the dump valve thats causeing this or wot it could be! thanx

 

Is it a single or twin piston dump valve?

 

i honestly couldnt tell you!! its the newest 1 and it sort of looks like a bullet? thats all i no!! oh and you can get interchangeable inserts!! and its really high pitched!!

 

take the dump valve off and either fit an OEM or run without one for a short time to see if it's the dump valve causing the problem. loss of burble I dont understand, but idling problems can be caused by dump valve. Does it seem to be boosting correctly ?

 

sorry i took so long i lost my post!! when i say loss of burble i mean its not as loud cos it aint idleing properly! when i slow for junctions i **** meself sumtimes and thnk its gna cut out! ill take it off soon as it stops raining and let u no! thanx

 

Some FMIC kits will not allow you to refit the standard BOV. You've not stated what year your car is but classics have ahd running problems associated with fitting a vent to atmosphere (VTA) BOV. Waste of money which is a shame. Your best bet is to get a hold of a recirc unit (Forge etc).

If you've fitted the FMIC are you now running an induction kit. I'm sure that would have been removed also.

You'll need a remap at this point as the car won't be providing enough fuel to match the increased air flow mixture.

Hopefully someone can add to this.

Regards

Esh

 

Maybe a vacuum leak through a loose FMIC hose causing the rough idle/cutting out?

 

dont no wots up with her!! she keeps spluttering, holding back, cutting out and there seems to be a missfire from inside the enginge!! id say its from near the turbo area! all me coil packs are fine cos i had them of yesterday to check for cracks but all is good!! oh its an 1994 classic!!! dose no body live near billingham that has any idea!! my subaru experiencisis sh*t atm and its really getting to me!!

 

Have you had it remapped since fitting the FMIC? Even if your coil packs don't look damaged, they can still be worn, do you know how old they are?

 

me ciol pack are approx 3 weeks old!!1 changed them me self so i no there ok!! but ive gave up on the scoob now gna brake in for bits!! really cant be chewed no more!! ran out of dosh!!! thanx anyways!

 

instantly sounds to me like an inlet leak somewhere. loosen all your intercooler hose jubalee clips and give the hoses a spin and re apply the jubalee clips. another way to test for a vacuum leak is get some electrolube and spray it on each joint, the electrolube creates a temporary seal and your idle speed changes if there is a leak, this is a quick spray on way to find your leak. worth noting also electrolube evaporates away after a minute so no damage to electrics or the engine on this test.

 

also forgot to mention that i was haveing these spluttering problems b4 the intercooler! but im goin to try loseing and retightening the pipes tmra! cheers mate!

 

yhpm mate