Aftermarket bov on a stock SMIC?

[smokey240sx]

I have a complete stock SR SMIC and all the piping. Do I have to disable the stock recirculating valve on the intercooler?

[S13240]

YES

[smokey240sx]

will capping it off be good enough?

[2_Liter_Turbo]

yes.

[TogueDrifter]

Is a aftermaret BOV really neccessary for the stock setup? won't affect performance will it?

[Pepperoni]

stock BOV will start leaking at or above 10psi on stock turbo. so yes, it usually is a good idea to get another BOV unless you want to modify your stock one.

[S13240]

stock BOV will start leaking at or above 10psi on stock turbo. so yes, it usually is a good idea to get another BOV unless you want to modify your stock one.

Funny you said that because my first s13 held 14 psi easily on stock bypass valve.

Then the s13 I have now has what you're describing. I had an Apexi Twin Chamber on the first couple runs I did out at Fontana this year then just last week I went back out to Fontana with the stock bypass valve installed and I ran 4 mph slower than the usual but still doing the same times...odd.

Anyway I think it really depends on the condition of the bypass valve if it will hold more than 10 psi or not.

[Pepperoni]

Interesting. Good point - the BOV's condition probably has a lot to do with it. Mine definitely leaked past 9psi (i could hear it + dyno checked out) as well as my friend's over ~11psi.

[drifter_for_life06]

id block it off and get an aftermarket if you have plans to up boost, and if you plan to get a FMIC in the future

[ca18det_boy]

yeah just cap it off, you shouldn't have any problems

[drifter_for_life06]

yeah just cap it off, you shouldn't have any problems

provided he caps it correctly

[ca18det_boy]

c'mon man, your trying to make this more difficult than it has to be. It doesn't take an engineer to cap something off........

[574-240sx]

c'mon man, your trying to make this more difficult than it has to be. It doesn't take an engineer to cap something off........

On NICO anything is possible

[drifter_for_life06]

i know its not hard, just saying, in the 240gen, there have been some compelte idiots posting liek its rocket science doing simple stuff......take the guy wanting sleepy eyes for instance

[ca18det_boy]

LOL ok yeah, I'm not saying that there isn't people who don't deserve a kick in the junk. I'm just trying to give credit until its proven that it shouldn't be given.

[smokey240sx]

thanx for all the replys. give me some credit. i'm not going to use a large bottle cap and chewing gum. .

[drifter_for_life06]

you get the credit you deserve, more then most

if you used a bottle cap and gum, i would laugh hysterically to the point i literally might die

[smokey240sx]

you'll see it at the next meet around HBG. If you die from the sight of my ghetto intercooler cap could I have yours?

[S13240]

I actually cap mine off with a bottle cap everytime I decide to install my Apexi twin chamber. It works and still looks clean. Function over form sometimes.

[Neil]

fwiw when I got my smic, the stock recirc leaked VERY badly. capping off the exit and blowing into the inlet of the intercooler you could plainly hear it leak. i wanted a greddy rs and nice hotpipe so i was already planning on disabling the stock bypass valve, but then it turned out i had to anyway. dont know what's in 'em but it wears out after 15 years.

Greddy RS is nice sounding... out of the box plug and play it seems to be set up perfectly for 7psi. no bogging problems between shifts either.

[9240sx]

I just installed my Greddy RS Valve And i love i.But im having a hard time getting it to open at 7psi.Im getting some surge.I have the hard and soft bolt all the way on soft and still.Guess its time to raise the Boost! 9-10psi sould do it.

[Neil]

Make sure the BOV gets its own dedicated vacuum line... i ran mine to the fatter of the 3 lines on the tb. The blue hose they provided was a little small for that fitting (and my tastes) so i bought some the right size but then it was a scoche too big for the BOV. used a teeny hose clamp on the bov and everything works perfectly. If you turn up the boost and the BOV isnt seeing proper vacuum when the throttle plate suddenly closes, youre just going to get more compressor surge.