Svt Bov?

AnglicoGT98 · January 10th, 2008, 04:23 AM

Just a quick question for anyone with a Termi or that knows anything about pass through MAF's....

Can you put a BOV on the '03 Cobra?? I'm sure there's a way....but I'm stumped...any help???

mpboy · January 10th, 2008, 04:59 AM

The By-Pass Valve does just that, it allows air that is being forced down the throat of your motor to be by-passed back into the supercharger or into the atmosphere, depending on the application, and the requirements of the supercharger.
Why, you might ask, is there a need to add more air by bolting on a supercharger and then take it away. The answer to that common question is, when you are force feeding a motor with air, there are times through-out the rpm-range where the motor can not handle more air. One example of this is, if an intake valve is closing on the cylinder heads, there is going to be a moment where it can not flow any air, but will imediately need air there after. Superchargers regulate the rate they flow air by the RPMs of the motor and not in those milliseconds through-out the RPM range that the motor can not handle the amount of air that the supercharger is forcing.

SuperchargersOnline.com :: Answering your questions about By-Pass Valves.

energiesource · January 10th, 2008, 08:52 AM

just buy a friggen turbo if you want a bov.

KingChronic · January 10th, 2008, 11:57 AM

Originally Posted by mpboy

The By-Pass Valve does just that, it allows air that is being forced down the throat of your motor to be by-passed back into the supercharger or into the atmosphere, depending on the application, and the requirements of the supercharger.

Why, you might ask, is there a need to add more air by bolting on a supercharger and then take it away. The answer to that common question is, when you are force feeding a motor with air, there are times through-out the rpm-range where the motor can not handle more air. One example of this is, if an intake valve is closing on the cylinder heads, there is going to be a moment where it can not flow any air, but will imediately need air there after. Superchargers regulate the rate they flow air by the RPMs of the motor and not in those milliseconds through-out the RPM range that the motor can not handle the amount of air that the supercharger is forcing.

SuperchargersOnline.com :: Answering your questions about By-Pass Valves.

what he said. but you dont hear the bypass valve at all.

AnglicoGT98 · January 10th, 2008, 12:45 PM

I understand exactly what a by-pass is and the whole atmospheric(BOV) vent or recirculating.... What I was trying to get at was, with a roots style S/C you can have it vent into the atmosphere right?? I'm not trying to find a way to get a "cool" sound...I just don't like the extra tubing to recirculate the boost. Any thoughts?? Thanks for the info thus far.

EnergieSource - Every kind of FI should have some sort or BPV/BOV, not just turbos. It gives better longevity.

KingChronic · January 10th, 2008, 12:51 PM

Originally Posted by AnglicoGT98

I understand exactly what a by-pass is and the whole atmospheric(BOV) vent or recirculating.... What I was trying to get at was, with a roots style S/C you can have it vent into the atmosphere right?? I'm not trying to find a way to get a "cool" sound...I just don't like the extra tubing to recirculate the boost. Any thoughts?? Thanks for the info thus far.

EnergieSource - Every kind of FI should have some sort or BPV/BOV, not just turbos. It gives better longevity.

no, its a pull through MAF cant vent to atmosphere or would cause tune issues.

whats wrong with the couple extra lines for the recirculation? the motor has tons of other vacuum lines, and your worried about a couple foot at the most of recirculation lines?

me no understand.

AnglicoGT98 · January 10th, 2008, 12:59 PM

I always just understood that with a draw though MAF all you need is a intercooler, then you can put the BOV before the MAF. I know you can't put one after the MAF b/c you'd be losing acounted air.

Point taken, I guess a couple extra lines really wouldn't matter...lol

energiesource · January 10th, 2008, 01:07 PM

Originally Posted by AnglicoGT98

I understand exactly what a by-pass is and the whole atmospheric(BOV) vent or recirculating.... What I was trying to get at was, with a roots style S/C you can have it vent into the atmosphere right?? I'm not trying to find a way to get a "cool" sound...I just don't like the extra tubing to recirculate the boost. Any thoughts?? Thanks for the info thus far.

EnergieSource - Every kind of FI should have some sort or BPV/BOV, not just turbos. It gives better longevity.

yes but superchargers at 9 psi...run at 9 psi. the onyl thing stopping turbos from running any higher than the set psi is the wastegate and the BOV so its more essential on a turbo

Eagle2000GT · January 10th, 2008, 01:24 PM

I forget which magazine, but I've read that a guy with a centrifical supercharger put one on his car. He could electronically dial in whatever pressure he wanted. I don't remember exactly but I think he was running around 23 psi on the track (racing gas) and 14 on the street (93 octane).

It would seem to me that at 14 psi his boost curve would be very similar to a turbo. Getting the boost early and flattening out.

January 10th, 2008, 04:23 AM	#1
AnglicoGT98 Enthusiast Join Date: Feb 2007 Location: Coral Springs, FL Posts: 630 iTrader: 2 reviews	Svt Bov? Just a quick question for anyone with a Termi or that knows anything about pass through MAF's.... Can you put a BOV on the '03 Cobra?? I'm sure there's a way....but I'm stumped...any help??? __________________ Parting out 2003 SVT Cobra Air/Fuel http://www.moddedmustangs.com/forums...003-cobra.html Engine http://www.moddedmustangs.com/forums...003-cobra.html

January 10th, 2008, 08:52 AM	#3
energiesource MM Fanatic Join Date: Oct 2006 Location: Up der in canada eh Posts: 3,527 iTrader: 1 reviews	just buy a friggen turbo if you want a bov. __________________ 2000 Mustang GT, 417hp/421tq, P1SC @ 6 psi(?), Custom grind cams, Steeda Triax shifter, SLP LM2, MAC L/T and O/R H-pipe. 18x9/10 Flat Black FR500's, Mach C-pillars, bullitt side scoops/skirts.

January 10th, 2008, 12:45 PM	#5
AnglicoGT98 Enthusiast Join Date: Feb 2007 Location: Coral Springs, FL Posts: 630 iTrader: 2 reviews	I understand exactly what a by-pass is and the whole atmospheric(BOV) vent or recirculating.... What I was trying to get at was, with a roots style S/C you can have it vent into the atmosphere right?? I'm not trying to find a way to get a "cool" sound...I just don't like the extra tubing to recirculate the boost. Any thoughts?? Thanks for the info thus far. EnergieSource - Every kind of FI should have some sort or BPV/BOV, not just turbos. It gives better longevity. __________________ Parting out 2003 SVT Cobra Air/Fuel http://www.moddedmustangs.com/forums...003-cobra.html Engine http://www.moddedmustangs.com/forums...003-cobra.html

January 10th, 2008, 12:59 PM	#7
AnglicoGT98 Enthusiast Join Date: Feb 2007 Location: Coral Springs, FL Posts: 630 iTrader: 2 reviews	I always just understood that with a draw though MAF all you need is a intercooler, then you can put the BOV before the MAF. I know you can't put one after the MAF b/c you'd be losing acounted air. Point taken, I guess a couple extra lines really wouldn't matter...lol __________________ Parting out 2003 SVT Cobra Air/Fuel http://www.moddedmustangs.com/forums...003-cobra.html Engine http://www.moddedmustangs.com/forums...003-cobra.html

January 10th, 2008, 01:24 PM	#9
Eagle2000GT MM Fanatic 2000 Mustang GT 12.73@111.36 Join Date: Aug 2007 Location: Shelbyville, IN Posts: 4,732 iTrader: 1 reviews	I forget which magazine, but I've read that a guy with a centrifical supercharger put one on his car. He could electronically dial in whatever pressure he wanted. I don't remember exactly but I think he was running around 23 psi on the track (racing gas) and 14 on the street (93 octane). It would seem to me that at 14 psi his boost curve would be very similar to a turbo. Getting the boost early and flattening out. __________________ ProCharger P-1SC, 9 psi, STD 396/383; Uncorrected 388/375; SAE 383/370 Mods list in Garage.

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