help creating a bov'd s/c setup please.

[imperfekt]

edit: i can keep the jrsc powercard but only if i don't run an intercooler, as the volume of air would be much less...

woo that's a bit of information to take in... i wrote a guy named braineack about his custom-built megasquirt ecu's who informed me that i could just keep the jrsc powercard and i'd just need to move the ait as close to the tb as possible?

[Guitarjon]

Brianeak is a mod over on miata turbo and certainly knows his stuff about all things charged and ecus. I don't know enough to help you ou with power cards as I ran a afpr and reduced the base timing until I got my my megasquirt up and running.

I installed the intercooler with the afpr and reduced base timing which ultimately just made me slower but it was fine to run. So I guess the power cards are just a better version of an afpr as they add fuel under boost and do your power cards reduce timing too?

[Guitarjon]

Your talking about AITs. Do you actually air inlet temperature sensors? You would only need one of these if you are getting rid of your afm/ maf and are running something such as megasquirt to control timing based on air temperature. You dont need to run an air to run an intercooler but further down the line it would help as it would tell the ecu what air temperature was going into your engine and with an intercooler it will be cooler air hopefully.

[imperfekt]

tbh, i like the output of the 1.8 as is... while the power gained from the sc is definitely a bonus, it's not the reason i want to get it. I want to drive around sounding B.A. like the video.

...because not-racecar

[Guitarjon]

So are you wanting to add an intercooler or anything or just want to put a BOV in?

[brontosaurus]

Cjsafski, why did you decide to swap the positions of the TBs?

There's a huge thread on m.net about this. Pretty much you're running the blower unthrottled the whole time. You can also run dual throttles for more benefits.

[adamvanxxx]

There's a huge thread on m.net about this. Pretty much you're running the blower unthrottled the whole time. You can also run dual throttles for more benefits.

I ended up finding some info on it, I don't need the info it just intrigued me.

[imperfekt]

no intercooler. my buddy says it's not necessary for 5psi...

[Guitarjon]

If your just wanting to install a BOV then you may be disapointed without the dual throttle bodies because there won't be any positive charged air inside the tubes when the throttle closes. Or if there is it will be minimal as the bypass valve does the work.

[imperfekt]

i read that thread, and with the guy who has his setup like this: supercharger with bov.jpg supercharger with bov 2.jpg

his bov is welded onto the blower outlet? hmmm, i wonder if it has any sound to it like cja's video...

There's a huge thread on m.net about this. Pretty much you're running the blower unthrottled the whole time. You can also run dual throttles for more benefits.

[imperfekt]

straight from the horses mouth...

Lol that is my car. Mechanically it is pretty simple to do. Put the throttle body back in the stock location and use a knock off greddy bov. Hook up the normal port on the bov to manifold and the secondary to one of the charge pipes. Also the vaccum line that goes to the canister on the sc needs to be moved from the blower to the intake mani. However the next part may be an issue for you. Unless you want your car to run like crap, you need to run a standalone since the bovs vent a lot of air at all times. I actually moved to a dual throttle setup and no longer have the car set up like this.

it doesn't sound super difficult. i just wanted to clarify the terminology meaning: can i make the assumptions that the "normal port" is the bottom flange and the "secondary" is the vacuum hose outlet. the "charge pipe" is the crossover pipe between the blower and the tb, and the "canister" is the bypass valve on the supercharger housing...?

[VdizzleMyNizzle]

Sounds like alot of work just to put a BOV. I'm planning on running my supercharger kit as is. The whinning sound is good enough.

[imperfekt]

If your just wanting to install a BOV then you may be disapointed without the dual throttle bodies because there won't be any positive charged air inside the tubes when the throttle closes. Or if there is it will be minimal as the bypass valve does the work.

this just hit me (weeks later...) that you mean to assume I'll be following the installation instructions and moving the tb to a position ahead of the charger?

neh, i think i have to leave the tb in the stock location (attached to the intake manifold), find somewhere to put the bov in the cross bar between the charger and tb (no intercooler), and there will be nothing but a filter between the air and the charger's intake. ...basically, i want to treat the super like it's a belt-driven turbo: air will go into it, air will get pressurized between the blower and the tb/intake mani., and when the tb shuts, the bov will release excess pressure....

am i failing to understand something?

[JakeLS01]

When you are all mentioning dual throttle bodies, are we talking two fully functional bodies? Or one functional (in stock location on intake manifold) and one "dummy" on the supercharger? Trying to understand all of this as I'm wanting to do a dual throttle body setup. However, all I get on other forums in dumb remarks to my question. Maybe y'all can be of better assistance.

[— Agent☣Orange —]

It's a fair question and you're not going to be rediculed here. Yes, dual throttle bodies refers to two actual throttle bodies adjusted to work together via a custom cable setup, no dummy TB involved.

It's been discussed a lot on MX5nutz as well as a great writeup from a guy named GodlessCommie on another forum.