? about bov fluter and fuel pressure - Ford Mustang Forums : Corral.net Mustang Forum
 
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post #1 of 6 Old 05-30-2009, 09:24 PM Thread Starter
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? about bov fluter and fuel pressure

first why does my bov fluter in stead of making the swoooooosh noise and my timing should be set at 8 degrees yes or no and what fuel pressure should i be running with a 61 trim turbo 45 lb inj 90 mm maf 75 mm throt. body 255bbk intank and vortec t-rex inline holley systemax intake what fuel pressure do i need to be hitting and is it at idle or a specific rpm please help me

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post #2 of 6 Old 05-30-2009, 10:19 PM
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That is probably your turbo fluttering, not the bov. What bov do you have on it? It sounds like it might not be working.

If your car's ecu is like mine, 8 would = 24 in during boost. I only run ~20 with stock heads at 8psi.

IDK about the other stuff.


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post #3 of 6 Old 05-30-2009, 10:22 PM
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cruise up to around 3300 and step on it till 4000 and let off, if it doesnt make a loud ass waaachuuu, then something is wrong.

either WG is hooked up backwards or something with the bov

Precision 67mm turbo, this and that.
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post #4 of 6 Old 05-31-2009, 08:32 AM
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I agree the bov is prolly not working correctly. does it flutter and sound like a chooo chooo chooo sound? thats compressor surge.

as for fuel pressure you should have at least the stock 38psi idle and during boost it should raise 1 psi for each 1 psi of boost.

My timing is set at 8* with spout in, I tried less timing but the car did NOT like it.

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post #5 of 6 Old 06-05-2009, 12:58 AM Thread Starter
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cool thanks guy i decided i would take it to pauls performance and let them tune it 1000dollars but they r some of the best
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post #6 of 6 Old 06-05-2009, 06:32 AM
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Originally Posted by superchargedmustang View Post
cool thanks guy i decided i would take it to pauls performance and let them tune it 1000dollars but they r some of the best
If you feel like throwing $400 away..feel free! Seriously, that is a MAJOR rip-off considering nearly every other place nationwide charges ~$600 or less for a tune. Seriously, $1000? They better give you a reach-around with it for that price!!!!!

Back to the original topic...it sounds like compressor surge for sure. Your springs in your BOV's are likely too heavy for your engines vacuum. What BOV are you running and what springs are in them? What is your engines vacuum at idle?

If that is indeed the problem, you can either cut them down...or order the correct spring size. If you decide to cut them down, it will take some trial and error. With the engine at idle so that the proper vacuum is applied, you should be able to actuate them with a finger on the valve VERY easily (think buttery smooth).

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Last edited by millhouse; 06-05-2009 at 06:36 AM.
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