my ATI bypass valve was leaking 2-3 psi and not allowing my truck to make boost until 3000rpms, I replaced it with a 25mm racing bypass valve for a turbo WRX allows me to make boost instantly as soon as I touch the pedal, at idle it flutters which makes for better fuel mileage and awsome low end power, I got it on recomendation from a guy i met on another forum that sees 11-12 psi with a 3 core innercooler on a 4.6, his 4.6 will out run a stock harley davidson F-150. My supercab, 8psi pullied p1sc, 2 core innercooler, 5.4 with 3.55 gears will pull on a 350z from a roll.

I'm seeing around 10 psi with a stock lower pulley and a 3.70 upper

if I was you I'd get a used procharger, swap to a good bypass valve and add a shift kit to your transmission and then start building a motor for later.

 

Got any pictures and parts numbers on this setup. And where to get the part. I would love to do this with mine.

 

Sounds like a good setup, does procharger make a full bolt on kit? first im going to do the mods to my engine, im not going to be able to do a supercharger untill i get some good funds.

 

Yeah I have the Kenne Bell with a water/meth injection setup, and I LOVE IT! I used to run the Powerdyne bd11a setup (non intercooled) and it didn't perform nearly as good as my KB! All in all, you get what you pay for. I use my truck for towing my 23 ft. toyhauler into the dunes (in pretty deep sand) with no problems. I also have 37" xterrain tires, 10" of lift, and 4.88 gears all around.

 

Yup. I bought mine used.

 

I believe terajerame is using the TurboXS RBV-25



I am using the TurboXS RBV-H34



Both of these bypass valves do the exact same thing the only difference is inlet/outlet size. The good thing about this valve is that it flutters at low RPM which puts more load on the blower and you build a little more boost at a lower RPM. Not to mention the stock procharger valve will leak all of your boost at low RPM. I also gained about 1.5 pounds of boost up top.

My truck is a 4.6L with 3core intercooler on the stock pulleys. I used to see about 9.5 pounds, maybe 10 sometimes. With the new valve I see 11 pounds. My truck with 42# injectors, Lightning MAF and a mail order tune will outrun a stock harley davidson F-150. I know this because my father has one.

 

colin is 100% right.

here is how mine looks prior to install.




if you get one ge the same one as colin, mine is going to end up getting replaced once I add more boost

 

Ok so do you guys have any images of how it is installed? And what happen wiht the pipe that the Procharger bypass valve is in?

Also where do you get these valves?

 

the hoses are the ATI hoses, the assembly i showed the picture of replaced the stock ATI bypass valve.

find a dealer close to you

http://www.turboxs.com/dealers.htm

 

Ok so it looks like you used some PVC to rig up a way for it all to wrok. Do you hhave info on that and a installed pictures.

Are the outlet and inlet sizes on this one the same as the ATI? I can make this work if so wihtout any of the odd adpaters you seem to be using.




Also does this price look to be what you guys paid for yours?

http://abdracing.com/Merchant2/merch...t_Code=RBV.H25

 

The RBV-H34 that I use fits the ATI bypass hose pretty well. I used the stock location and it was a direct bolt in. I will see if I can take a picture.

 

make sure you guys get the RBV-H34 the 25 series valve will cause issues

 

here's a great starter kit

http://cgi.ebay.com/ebaymotors/Ford-...spagenameZWDVW

 

hows the durabuility of the procharger, ive read they leak after a while, is that true? is there any places to buy a procharger for 3 grand or less, the cheapest ive found is 4 grand.

 

I bought mine used. The guy before me said he put about 20K miles on it.
I put another 40K miles on it. Never leaked. Was still going strong when I sold my Expy.

You are supposed to change the oil every 6K miles. It's sort of a PITA because you have to remove the head unit (takes about n hour). I think if you do this like you're supposed to, it should last a good ling time.